Terms of Service

These Terms govern your use of the Compound mobile app and the website at compoundfit.app (together, "Compound"). Please read the section that applies to where you live. If you are in the European Economic Area, Switzerland or the United Kingdom, section 20 changes several of the terms below in your favour. If you live anywhere else, section 19 sets out how disputes between you and us are resolved, including by individual arbitration.

1. Who we are

Compound is provided by:

Hieu Luu, sole proprietor, trading as Compound
3575 Arden Way Unit #2014, Sacramento, CA 95864, United States
hello@compoundfit.app

We are the developer and operator of Compound. We are not a healthcare provider.

2. How Compound is sold — and who you are buying from

This matters, because it decides who to go to when something goes wrong.

There are two separate agreements:

• Your purchase — when you buy a subscription or the lifetime unlock, you buy it from Apple (on iOS) or Google (on Android), not from us. In the EEA, Switzerland and the UK, Apple and Google are the sellers of record. They take your payment, handle tax, issue your receipt, and decide refunds under their own policies.
• Your use of Compound — that's this agreement, between you and us. It covers what Compound does, your account, your content, and how we may change or end the service.

So: billing questions go to Apple or Google. Everything about the app itself comes to us. We explain where to go in section 7.

3. Accepting these Terms

You accept these Terms when you create your account. The sign-in screen says: "By tapping Continue, Sign up with Apple or Continue with Google, you agree to our Terms of Service, including the arbitration clause, and our Privacy Policy." Tapping one of those buttons is your agreement. We record on our servers which version of these Terms you accepted, when, and on which screen.

If we later change these Terms in a way that needs your agreement again, the app shows you a one-time notice of the new version and asks you to accept it before you continue (see section 14). If you don't agree, don't use Compound.

4. Eligibility and age

4.1 Minimum age. You must be at least 13 years old to create an account. If you are in the European Economic Area, the United Kingdom or Switzerland, you must be at least 16 years old.

4.2 If you are under 18. You may use Compound only with the knowledge and permission of a parent or legal guardian, and you confirm that your parent or guardian has reviewed and agreed to these Terms on your behalf. We may ask you or them to confirm this at any time. Accounts of users under 18 get extra protections, described in section 11.

4.3 Health and medication features. Some features — weight history, the medication diary, nutrition logging — involve health information. Where we ask for your explicit consent to these, you may decline and keep using the rest of Compound. These features are intended for adults. If you are under 18, do not use the medication diary. Compound is not a medical device and does not give medical advice.

4.4 Referral programme. The cash referral programme is open only to residents of the United States aged 18 or over.

4.5 Prohibited content. Content that encourages, promotes or provides instructions for an eating disorder or behaviours associated with an eating disorder, or for self-harm or suicide, is prohibited on Compound for all users, without exception. Pornographic or sexually explicit content, whether an image or text, is also prohibited on Compound for all users, without exception. We remove such content and may suspend or terminate accounts that post it.

4.6 Accuracy. Give us your true date of birth. If we learn that a user is below the applicable minimum age, we will suspend the account and delete the associated personal data.

5. Your account

You're responsible for keeping your login secure and for activity under your account. Tell us at hello@compoundfit.app if you think someone else has access.

You can delete your account at any time from within the app.

6. What Compound is, and what it isn't

Compound helps you plan workouts, log what you eat, track your weight, and — if you use a GLP-1 medication — keep your own diary of doses and how you're feeling.

Compound is a tool for recording and reviewing information you enter yourself. It is not a medical device and it does not provide medical advice.

Specifically:

• We are not doctors, dietitians, pharmacists or personal trainers, and nothing in Compound is a diagnosis, a treatment, or a recommendation about your health.
• The GLP-1 features are a diary. They record doses and side effects that you enter, and show them back to you in date order. Compound does not advise on dosing, does not tell you to change a dose, does not interpret your side effects, and draws no conclusions from what you log. Any decision about a prescription medicine is between you and your prescriber. Take your medication exactly as your prescriber directs.
• Meal-scan nutrition figures are AI-generated estimates and are approximate. When you photograph a meal, an artificial-intelligence model estimates what's in it. It can be wrong, sometimes substantially — it may misidentify a food, misjudge a portion, or miss an ingredient it can't see. Treat the numbers as a guide. Don't rely on them where accuracy matters medically, such as carbohydrate counting for insulin dosing or managing a diagnosed allergy or intolerance.
• Calorie and macronutrient targets are calculated from formulas and from what you tell us. They are general estimates, not a prescription.

Talk to a qualified healthcare professional before starting a new exercise programme or changing your diet — particularly if you have a medical condition, take medication, are pregnant, or have a history of disordered eating. Stop exercising and seek medical care if you feel pain, dizziness, or anything else that concerns you.

Nothing in these Terms limits our liability for death or personal injury caused by our negligence.

7. Subscriptions, the lifetime unlock, and billing

Some of Compound is free to use, such as viewing your plan and logging workouts. Nutrition logging and meal scanning need Compound Pro, which is available as a monthly or an annual subscription. A one-time lifetime unlock also exists, but it is not on the standard purchase screen: we offer it from time to time to some users, for a limited period.

Subscriptions

• Price and term are shown in the app before you buy, in your local currency, and include tax where the store charges it.
• Free trial. Both plans can include a free trial for eligible users, and joining with a friend's referral code can give you a longer one. Cancel before the trial ends and you won't be charged. Trial length is shown at purchase. On iOS, trial eligibility is checked with the App Store at the moment you buy: if your App Store account has already used an introductory offer for Compound, the app shows the full price and no trial.
• Automatic renewal. Subscriptions renew automatically at the end of each period unless you cancel at least 24 hours before it ends. Your store account is charged the price shown at purchase.
• How to cancel. You cancel through the store you bought from, not through us — we have no ability to cancel a subscription on your behalf. iPhone or iPad: Settings → tap your name → Subscriptions. Android: Play Store app → profile icon → Payments & subscriptions → Subscriptions. Cancelling stops the next renewal; you keep Pro until the end of the period you've paid for.
• Refunds are handled by Apple and Google under their own policies, because they are the seller. For Apple, use reportaproblem.apple.com. For Google, use the Play Store order history or Google's refund form. We can't issue, promise, or refuse a store refund — but if something has gone wrong, email us and we'll help you make the request and, where we can, put the underlying problem right.
• Price changes. If we change the price of a subscription, we'll tell you in advance and you'll have the chance to cancel before the new price applies. A price change never applies to a period you've already paid for.

The lifetime unlock

The lifetime unlock is a one-time purchase that gives you Compound Pro for as long as we operate Compound as a service, with no further payment. It is not a subscription and does not renew.

Being straight with you about what “lifetime” can and can't mean: Compound depends on servers we run and on services we buy from other companies, so we can't promise it will exist forever. What we do promise:

• We will not convert the lifetime unlock into a paid subscription, or start charging you again for what it covered when you bought it.
• Pro features may change over time as the product develops. Section 13 governs that, and if a change materially reduces what your lifetime unlock gave you, you have the rights in section 13.
• If we ever discontinue Compound entirely, we will give you at least 90 days' notice, give you a way to export your data, and refund a fair share of what you paid for the lifetime unlock, based on how long you had it relative to a reasonable expected service life.

8. The referral programme

Compound runs a referral programme with cash rewards. It is currently open only to residents of the United States. Separate Referral Program Terms apply and form part of these Terms for participants. If you're outside the US, you can still share Compound — there just isn't a reward available to you yet.

9. Your content

You keep ownership of what you create in Compound — meal photos, notes, posts, comments.

To run the service, you give us permission to store, process and display your content, and to show it to the people you choose to share it with. That permission is limited to operating and improving Compound, lasts as long as you keep the content in Compound, and ends when you delete the content or your account — except for copies others have already legitimately received, and backups that are deleted on our normal cycle.

We do not sell your content and we do not use your photos or logs to train AI models.

You're responsible for what you post, and you confirm you have the right to share it.

10. Acceptable use

Don't:

• use Compound unlawfully, or in breach of these Terms
• reverse-engineer, decompile or disassemble the app, except where law gives you that right
• interfere with the service, our servers, or other users
• post content that harasses, abuses, defames, sexually exploits, or infringes someone's rights
• post content that encourages, promotes or gives instructions for an eating disorder or behaviours associated with one, or for self-harm or suicide (prohibited for everyone, see section 4.5)
• post pornographic or sexually explicit content (prohibited for everyone, see section 4.5)
• use Compound for, or on behalf of, a proscribed terrorist organisation
• impersonate anyone or misrepresent your affiliation
• scrape, copy or resell Compound or its content

11. Community, moderation and safety

How we keep people safe. In short:

• The same rules for everyone. We don't allow illegal content, harassment or abuse, pornographic or sexually explicit content, or content that promotes eating disorders, self-harm or suicide (sections 4.5 and 10). These rules apply to every user, whatever their age.
• An automatic word filter. Every post, comment, profile bio, name and handle is checked before it is published against a list of slurs, sexually explicit terms and terms that promote eating disorders. More on how it works below.
• Extra protection if you are under 18. We go by the date of birth you give us. Until you turn 18: your account is private and can't be made public, so only followers you approve see your posts; people who don't already follow you won't find you in search or see your posts in For You; contact matching in Find Friends is off, so you can't match your contacts and nobody can find you by your phone number; and the medication diary is not available.
• Anyone can report. You can report a post, comment or user from the in-app menu. Anyone, with or without a Compound account, can report content at compoundfit.app/dsa. A person reviews every report.
• You can appeal. If you disagree with a decision we made, ask us to look again. How to do that is set out below.
• No terrorist organisations. We remove any account operated by, or on behalf of, a proscribed terrorist organisation.

The details:

• Who sees your posts. Unless you make your account private, your posts and comments are visible to other signed-in Compound users, including people you don't follow. A private account shows them only to followers you have approved. Accounts of users under 18 are always private. You can delete your own posts and comments at any time.
• What isn't allowed. Content that is illegal, or that breaks section 10 (including section 4.5).
• Automated filtering. Before a post, comment, profile bio, name or handle is published, it is automatically checked against a list of slurs, sexually explicit terms and terms that promote eating disorders. Content that matches is not published, and the app tells you why at that moment. No person reviews this check before it happens, but you can ask a person to review the result (see below). This is the only automated moderation tool we use.
• Reporting. Any post, comment or user can be reported from the in-app menu. Anyone, including people without a Compound account, can report content they believe is illegal at compoundfit.app/dsa. Every report is reviewed by a person, not an algorithm, and we aim to act within 24 hours.
• Intimate images shared without consent. If someone posted an intimate image of you without your consent, including a fake or AI-made one, ask us to remove it at compoundfit.app/dsa (choose "Non-consensual intimate images") or by email to hello@compoundfit.app with the subject "Intimate image removal". Tell us where it is (a link, or the username and date), confirm in good faith that it was shared without consent, give us a way to reach you, and sign with your full name. You can ask on someone else's behalf if you're authorised to act for them. We remove it, and any identical copies we find, as soon as possible and within 48 hours.
• What we can do. Depending on what we find, we may remove content or stop it from being shown, suspend an account for a period, or close it. Repeat or serious violations lead to account removal. We decide carefully and proportionately, considering the content and its context, how serious and how repeated the problem is, and the rights and interests of everyone involved, including freedom of expression.
• Telling you why. If we restrict your content or your account, we tell you what we did, the facts behind it, whether an automated tool was involved, which rule or law we relied on, and how to challenge the decision.
• Blocking. Blocking hides their content from you and yours from them, and stops follows either way.

Challenging a decision. If you disagree with a decision we made about your content, your account or a report you sent us, email hello@compoundfit.app with the subject line "Challenge a moderation decision" within six months of the decision. A person who looks at it afresh will review it and reply, and we reverse decisions we got wrong. Doing this does not affect your right to go to court.

Our contact points under the EU Digital Services Act, and how we handle reports, are on our reporting and contact page.

12. Copyright complaints

We respect copyright and expect you to. If you believe content on Compound infringes a copyright you own or control, send a notice under the Digital Millennium Copyright Act (17 U.S.C. § 512) to hello@compoundfit.app with the subject line "Copyright notice", or by post to the address in section 23.

12.1 What a notice must contain.

• your physical or electronic signature, or that of a person authorised to act for the copyright owner;
• identification of the copyrighted work you say has been infringed (or a representative list, if one notice covers several works);
• identification of the material you say is infringing and enough information for us to find it, such as a link to the post, or the username and the date of the post;
• your name, postal address, telephone number and email address;
• a statement that you believe in good faith that the use is not authorised by the copyright owner, its agent or the law; and
• a statement that the information in the notice is accurate and, under penalty of perjury, that you are the copyright owner or authorised to act for them.

12.2 What we do. When we receive a complete notice we remove or disable access to the material promptly, tell the user who posted it, and give them a copy of the notice. Knowingly misrepresenting that material is infringing can make you liable for damages under 17 U.S.C. § 512(f).

12.3 Counter-notice. If your content was removed and you believe that was a mistake or a misidentification, email us a counter-notice containing: your physical or electronic signature; identification of the material that was removed and where it appeared before removal; a statement under penalty of perjury that you believe in good faith the material was removed by mistake or misidentification; your name, postal address and telephone number; and a statement that you consent to the jurisdiction of the federal district court for the district where your address is (or, if you are outside the United States, any district in which we may be found) and that you will accept service of process from the person who sent the original notice. We forward the counter-notice to that person. Unless they tell us within 10 business days that they have filed a court action to restrain the infringement, we restore the material within 10 to 14 business days of receiving your counter-notice.

12.4 Repeat infringers. We close the accounts of users who repeatedly infringe copyright, and we may do so after a single serious infringement.

13. Changes to Compound

We develop Compound continuously, so features change. We may modify the service where there's a good reason to — for example to add or improve features, to keep it secure, to fix problems, to adapt to a new operating system or a change in a service we depend on, or to comply with the law.

If a change would materially and negatively affect how you use Compound:

• we'll tell you in advance in the app, and by email where we have your address, describing the change and when it takes effect;
• you may terminate this agreement free of charge within 30 days of being told, or of the change taking effect, whichever is later;
• if you'd prepaid for a period you no longer get the benefit of, we'll refund the unused part.

Changes that don't disadvantage you — bug fixes, security updates, new features — we may make without notice.

14. Changes to these Terms

We may change these Terms where there's a valid reason: a change in the law or in regulatory guidance, a change to Compound or to how it's provided, a change in the services or stores we depend on, or to correct an error or improve clarity.

We will not make a change that disadvantages you without telling you first. For material changes, we'll give at least 30 days' notice in the app, and by email where we have your address, and you may stop using Compound and close your account before the change takes effect. Where a change needs your agreement, the app shows you a one-time notice of the new version and asks you to accept it before you continue; we record that acceptance as described in section 3. If you'd prepaid for a period, section 13's refund applies.

Minor changes with no effect on your rights — typos, clarifications, a new address — take effect when published.

We won't apply a change retroactively to something that already happened.

15. Suspension and ending this agreement

You can stop using Compound and delete your account at any time, from within the app. If you've prepaid for a period, cancellation through your store determines whether you're refunded — see section 7.

We may suspend or close your account if:

• you materially breach these Terms, including the acceptable-use rules; or
• we're required to by law; or
• we discontinue Compound (section 7).

Except where a breach is serious enough to need immediate action — for example content that endangers someone — we'll warn you first, tell you what the problem is, and give you a fair chance to fix it. If we close your account other than for your breach, and you've paid for a period you no longer get, we'll refund the unused part.

Sections that by their nature should continue — your content licence for content others have received, intellectual property, liability, governing law — survive.

16. Our intellectual property

Compound, the website, and all related software, design, branding and content (other than user content) belong to us. We grant you a limited, personal, non-transferable licence to use Compound as intended. Nothing here transfers ownership to you.

17. Complaints

If something's wrong, email hello@compoundfit.app with what happened and what you'd like us to do. We aim to acknowledge within 5 business days and to resolve or explain within 30 days.

Complaining to us doesn't affect any legal rights you have, including your right to go to court.

18. Liability

We're liable to you for loss we cause by breaking this agreement or by failing to use reasonable care and skill. We're not liable for loss that wasn't foreseeable at the time you agreed to these Terms, or for loss caused by something outside our reasonable control.

Except where section 20 applies, and to the extent the law allows, we're not liable for indirect, incidental, special, consequential or punitive damages, or for lost profits or goodwill, and our total liability for any claim relating to Compound will not exceed the greater of the amount you paid for Compound in the 12 months before the claim (including amounts paid through Apple or Google) or USD $100.

None of the above limits or excludes our liability for:

• death or personal injury caused by our negligence;
• fraud or fraudulent misrepresentation;
• anything else the law does not permit us to limit or exclude.

19. Disputes (outside the EEA, Switzerland and the UK)

This section applies if you live outside the European Economic Area, Switzerland and the United Kingdom. If you live in one of those places, section 20 applies to you instead and nothing in this section binds you.

19.1 Governing law. These Terms, and any dispute between you and us, are governed by the laws of the State of California, without regard to its conflict-of-laws rules. The Federal Arbitration Act governs the arbitration agreement in this section.

19.2 Talk to us first. Before either of us starts arbitration or a court claim, we agree to try to resolve the dispute informally. Email hello@compoundfit.app with "Dispute" in the subject line, your name, the email address on your account, what happened and what you would like us to do. If we have a dispute with you, we will email the address on your account with the same details. Both sides then have 30 days from the date that email is received to work it out together. Any deadline for bringing a claim is paused during those 30 days. Only after they have passed may either side start arbitration or a small-claims case.

19.3 Binding individual arbitration. You and we agree that any dispute, claim or controversy arising out of or relating to these Terms or to Compound, including whether this section applies to a particular dispute, will be resolved by binding arbitration before a single arbitrator, administered by the American Arbitration Association (AAA) under its Consumer Arbitration Rules in force when the arbitration is started. The rules and forms are at adr.org. The arbitrator can award you, individually, any remedy a court could. Fees are set by the AAA Consumer Arbitration Rules, which cap what a consumer pays. The hearing, if there is one, takes place by video, by phone or on documents, or in Sacramento County, California, or the county where you live, as those rules provide. Judgment on the award may be entered in any court with jurisdiction. This means you and we are each giving up the right to go to court and have a judge or jury decide the dispute, except as set out in 19.4, 19.6 and 19.8.

19.4 Small claims. Either of us may instead bring an individual claim in small-claims court, in Sacramento County, California, or in the county where you live, if the claim qualifies there.

19.5 No class actions, no jury trial. You and we each agree to bring claims only in an individual capacity, and not as a plaintiff or class member in any class, consolidated or representative proceeding. The arbitrator may not combine the claims of more than one person or preside over any form of class proceeding. If a dispute goes to court rather than arbitration, you and we each waive the right to a jury trial.

19.6 Opting out. You can opt out of this arbitration agreement. Email hello@compoundfit.app with the subject "Arbitration opt-out", your name and the email address on your Compound account, within 30 days after you first accept these Terms. Opting out does not change any other part of these Terms. If you opt out, disputes between you and us go to the courts named in 19.9.

19.7 Mass filings. If 25 or more arbitration demands raising similar claims are brought against us, or by us, by or with the help of the same or coordinated lawyers, they will be treated as a mass filing. The AAA will group them into batches of no more than 25 demands, each batch is heard by a single arbitrator as one consolidated arbitration, and one set of filing and administrative fees is payable per batch. The batches are heard one at a time, with the remaining demands paused, and any deadline for bringing a claim is paused for a demand while it waits. If the AAA cannot administer a batching process, either side may ask a court to appoint a neutral to decide how the demands are grouped. Nothing in this clause applies to a dispute that is not part of a mass filing.

19.8 If the class-action waiver cannot be enforced. If a court decides that the class-action waiver in 19.5 cannot be enforced for a particular claim or request for relief, then that claim or request, and only that one, will be decided in the courts named in 19.9 rather than in arbitration, and it will be put on hold until the arbitration of everything else is finished. The rest of this section stays in force.

19.9 Courts. Anything that is not arbitrated, other than a small-claims case under 19.4, must be brought in the state or federal courts located in Sacramento County, California, and you and we each accept the jurisdiction of those courts.

20. If you live in the EEA, Switzerland or the UK

This section applies if you are a consumer, meaning someone using Compound outside a trade, business or profession, habitually resident in the European Economic Area, Switzerland or the United Kingdom. Where it conflicts with anything above, this section wins. In particular, section 19 (Disputes) does not apply to you at all: you are not required to arbitrate, and nothing in these Terms takes away your right to go to court in your own country.

20.1 Your statutory rights come first. You have rights under consumer law that we cannot reduce by contract, including the right to digital content and services that are as described, fit for purpose, and of satisfactory quality, and the right to have problems put right. Nothing in these Terms affects those rights. Any term above that would limit them doesn't apply to you. In particular, the general disclaimers and liability caps in section 18 do not apply to you to the extent they would cut down rights you have under the law of your country of residence.

20.2 If Compound doesn't work as it should. Tell us and we'll fix it within a reasonable time and at no cost to you. If we can't, or don't, or if the problem is serious, you may be entitled to a price reduction or to end the agreement — and where you paid through a store, to a refund through that store. These rights are in addition to anything else in these Terms.

20.3 Buying, cancelling and the 14-day withdrawal right. Because Apple and Google are the sellers where you live, your statutory right to withdraw from a purchase within 14 days is exercised against them, under their terms, and they operate that process. That right may be lost once you start using digital content — the store will tell you at checkout. We are not able to grant or refuse it, and nothing in these Terms takes it away. If you're having trouble, email us and we'll help you take it up with the store.

20.4 Which law applies. These Terms are governed by the law of the State of California. However, as a consumer you keep the protection of the mandatory rules of the law of the country where you habitually live, and this choice of Californian law cannot take those protections away from you.

20.5 Where you can bring a claim. You may bring proceedings against us in the courts of the country where you live. You may also choose the courts where we are based. We will only bring proceedings against you in the courts of the country where you live. Nothing in these Terms requires you to arbitrate, to give up the right to bring or join a group claim, or to litigate outside your own country.

20.6 Changes. For you, sections 13 and 14 apply with the notice periods and free termination rights stated there. We won't rely on your continued use of Compound as agreement to a change that disadvantages you.

20.7 Complaints and dispute resolution. Section 17 tells you how to complain. We are not signed up to an alternative dispute resolution scheme. The European Commission's Online Dispute Resolution platform closed on 20 July 2025 and is no longer available. You can always take a dispute to the courts identified in section 20.5, and your national consumer authority or a consumer association may be able to help.

21. If you got the app from Apple

These Terms are between you and us, not Apple. Apple has no obligation to provide maintenance or support for Compound. Apple is a third-party beneficiary of these Terms and may enforce them against you. Your use of the app must comply with the Apple Media Services Terms and Conditions.

Nothing in this section reduces the rights you have under section 20.

22. General

If any part of these Terms is unenforceable, the rest stays in effect.

If we don't enforce something straight away, we don't lose the right to enforce it later.

You may not transfer your rights under these Terms without our consent. We may transfer ours if Compound is sold or reorganised, provided your rights are not reduced.

23. Contact

hello@compoundfit.app
Hieu Luu, trading as Compound
3575 Arden Way Unit #2014, Sacramento, CA 95864, United States