Terms and Conditions

Last updated 21 September 2026

1. Interpretation and definitions

Words with a capitalised first letter have the meanings set out below. These meanings apply whether the words appear in the singular or the plural.

• Application or App means the Sixteen software downloaded by You from an Application Store onto a Device.
• Application Store means the Apple App Store, and any other digital distribution service through which the Application is offered.
• Affiliate means an entity that controls, is controlled by, or is under common control with a party, where control means ownership of 50% or more of the shares, equity interest or other securities entitled to vote for the election of directors or other managing authority.
• Account means the unique account created for You to access the Service or parts of it.
• Company (also "We", "Us" or "Our") means Tropolin Labs LLC.
• Content means text, images, audio or other material that You enter into or submit through the Service, such as journal entries, logged meals and meal photos, workout logs and messages to the in app coach.
• Device means any device that can access the Service, such as an iPhone.
• Feedback means feedback, ideas or suggestions You send Us about the Service.
• Health Information means data about Your body that the Service reads or computes, including heart rate, heart rate variability, sleep, workouts, steps, respiratory rate, meals, and the scores Sixteen derives from them.
• In-app Purchase means the lifetime access purchase or the monthly subscription bought through an Application Store, and any other product We offer for purchase inside the Application.
• Service means the Application and the Website together.
• Terms means these Terms and Conditions, which form the entire agreement between You and the Company regarding the use of the Service.
• Third-party Service means any service, device or content provided by someone other than the Company that the Service connects to or displays, such as Apple Health, an Apple Watch, a WHOOP strap, or a sign in provider.
• Website means sixteen.life.
• You means the individual using the Service, or the company or other legal entity on whose behalf that individual is using it.

2. Acknowledgment

These Terms govern Your use of the Service and are the agreement between You and the Company. They set out the rights and obligations of everyone who uses the Service.

By accessing or using the Service You agree to be bound by these Terms. If You do not agree with any part of them, do not use the Service.

Your use of the Service is also conditioned on Your acceptance of Our Privacy Policy, which explains what We collect, how We use it, and Your rights. Please read it before using the Service.

3. Eligibility

You must be at least 13 years old to use the Service. If You are under 18, or under the age of majority where You live, You may use the Service only with the permission of a parent or guardian who agrees to these Terms on Your behalf. You represent that You meet these requirements.

4. Your Account

Some features need an Account. You agree to give Us accurate and complete information and to keep it current. You are responsible for everything that happens under Your Account and for keeping Your sign in credentials private. Tell Us immediately at legal@tropolinlabs.in if You believe Your Account has been accessed without permission.

You may not use a name that belongs to someone else, that infringes another person's rights, or that is offensive, vulgar or obscene. You can delete Your Account from Settings inside the Application at any time.

5. Purchases, subscriptions and refunds

Sixteen offers two ways to pay: a one time lifetime access purchase, and a monthly subscription that renews automatically until cancelled. Prices are shown in the Application before You buy and may vary by country. There is no free trial.

All In-app Purchases are billed by the Application Store under its own terms. The Application Store, not the Company, handles payment, receipts, renewals, cancellation and refunds. You can manage or cancel a subscription in Your Device's subscription settings; cancellation takes effect at the end of the current billing period. Lifetime access is tied to the Application Store account that bought it and is not transferable.

If an In-app Purchase fails to unlock or stops working, contact Us and We will investigate and, where the fault is Ours, repair it or provide a replacement at no charge. If We cannot do so within a reasonable time, We will support a refund request through the Application Store. Refund decisions rest with the Application Store. In-app Purchases cannot be exchanged for cash.

Purchases made on the Website are processed by Paddle.com, Our payment partner, which acts as the merchant of record and reseller for those orders. Paddle's buyer terms apply to the payment and the rest of these Terms apply to the Service.

Refunds. We offer a 14 day money back guarantee, set out in Our Refund Policy, which forms part of these Terms. Purchases made on the Website are refunded by Us through Our payment partner. Purchases made through an Application Store can only be refunded by that Application Store under its own policy, and the Refund Policy explains how to ask.

6. Health Information and no medical advice

Sixteen is a wellness and self improvement product. It is not a medical device, it does not diagnose, treat, cure or prevent any disease or condition, and nothing in the Service is medical advice. Scores such as sleep, recovery, strain, stress and screen time are estimates computed from the data available to the Application and from Your own history. They can be wrong, incomplete, or delayed, and they depend on the accuracy of the wearable and the data You give the Application.

Do not rely on the Service to make decisions about Your health, training, nutrition or medication. Talk to a qualified professional before changing how You train, eat or sleep, and stop any activity that causes pain or distress. If You think You are having a medical emergency, contact emergency services.

7. Wearables and Third-party Services

The Application can read Health Information from Apple Health, from an Apple Watch through Apple Health, and directly from a WHOOP strap over Bluetooth. You choose what to connect and can revoke access at any time in Your Device settings or inside the Application. The Company does not make or sell wearables, is not affiliated with, sponsored by or endorsed by Apple, WHOOP, Oura, Garmin or any other device maker, and names their products only to identify the devices You may already own. Their trademarks belong to their owners.

The Company is not responsible for Third-party Services, for their availability, or for the accuracy of data they provide. Their terms and privacy policies govern Your use of them. Reading a device directly may require that device's own account or firmware, and a device maker may change or restrict access at any time.

8. Screen time controls

Sixteen can limit access to apps and websites on Your Device using Apple's Screen Time and Family Controls frameworks, on schedules and rules You set. You choose which apps are covered and You can pause or turn the controls off at any time. The controls are a tool to help You keep Your own commitments; they are not a security product, they can be bypassed by anyone with Your Device passcode, and We do not guarantee that a block will apply at every moment. Do not rely on them to protect a child or to enforce anything where failure could cause harm.

9. Your Content and acceptable use

You own Your Content. You give the Company a worldwide, non exclusive, royalty free licence to store, process, display back to You and, where a feature requires it, transmit Your Content, solely to operate, secure and improve the Service. Your Content is private to Your Account. We do not publish it to other users.

You are responsible for Your Content and for having the right to submit it. You agree not to submit or transmit anything that is unlawful, that infringes another person's rights, that contains malicious code, that impersonates any person or the Company, or that attempts to probe, overload or interfere with the Service. You also agree not to reverse engineer the Application, resell access to it, or use it to build a competing data set.

The in app coach is an automated assistant. Its replies are generated by software and may be inaccurate. Section 6 applies to everything it says.

We keep backups, but We do not guarantee that Content will never be lost or corrupted. Keep Your own copy of anything important to You.

10. Intellectual property and Feedback

The Service, including its software, design, text, graphics, scores and methods, belongs to the Company and its licensors and is protected by copyright, trademark and other laws. These Terms give You a personal, revocable, non transferable licence to use the Application on a Device You own or control, subject to the Application Store's usage rules. No other rights are granted.

If You send Us Feedback, You assign to the Company all rights in it. If that assignment is not effective, You grant the Company a perpetual, irrevocable, worldwide, royalty free licence to use the Feedback without restriction or credit.

11. Copyright complaints

We respect the intellectual property rights of others. If You believe material available through the Service infringes Your copyright, send a notice to legal@tropolinlabs.in that includes: Your physical or electronic signature; a description of the copyrighted work; the location of the material You say is infringing; Your address, telephone number and email; a statement that You believe in good faith the use is not authorised by the owner, its agent or the law; and a statement, under penalty of perjury, that the notice is accurate and that You are the owner or authorised to act for the owner. Misrepresenting that material is infringing can make You liable for damages, including costs and attorneys' fees. We will act on valid notices, including by removing the material.

12. Links to other websites

The Service may link to websites or services that the Company does not own or control. We have no control over, and take no responsibility for, their content, policies or practices, and We are not liable for any loss caused by Your use of them. Read their terms and privacy policies before You use them.

13. Termination

We may suspend or terminate Your Account and access to the Service without notice if You breach these Terms, if required by law, or if We discontinue the Service. On termination Your right to use the Service ends. You may end this agreement at any time by deleting Your Account and the Application. Sections 6, 9, 10, 14, 15 and 16 survive termination.

14. Limitation of liability

To the fullest extent permitted by law, the total liability of the Company and its suppliers to You for all claims under or related to these Terms or the Service is limited to the amount You paid for the Service in the twelve months before the claim, or 100 US dollars if You have paid nothing.

To the fullest extent permitted by law, the Company and its suppliers are not liable for any indirect, incidental, special, consequential or punitive damages, including loss of profits, data, goodwill or health outcomes, arising from or related to the Service, any Third-party Service or wearable used with it, or these Terms, even if advised of the possibility of such damages and even if a remedy fails of its essential purpose.

Some jurisdictions do not allow the exclusion of implied warranties or the limitation of liability for incidental or consequential damages. Where that is the case, the limitations above apply to the greatest extent the law allows.

15. "As is" and "as available" disclaimer

The Service is provided "as is" and "as available", with all faults and without warranty of any kind. To the fullest extent permitted by law, the Company, on its own behalf and on behalf of its Affiliates, licensors and service providers, disclaims all warranties, express, implied, statutory or otherwise, including implied warranties of merchantability, fitness for a particular purpose, title and non infringement, and any warranties arising from course of dealing or usage of trade. The Company does not warrant that the Service will meet Your requirements, achieve any result, work with any particular device or software, run without interruption, meet any accuracy, performance or reliability standard, or be free of errors, or that errors will be corrected. Where a jurisdiction does not allow certain exclusions, they apply to the greatest extent enforceable.

16. Governing law and disputes

These Terms are governed by the laws of the State of Delaware, United States, without regard to its conflict of law rules. Your use of the Service may also be subject to other local, state, national or international laws. If You have a concern or dispute about the Service, You agree to first try to resolve it informally by contacting Us at legal@tropolinlabs.in and giving Us 30 days to respond before starting any formal proceeding.

17. Users in the European Union and the United Kingdom

If You are a consumer in the European Union or the United Kingdom, You keep the benefit of any mandatory provisions of the law of the country where You live, and nothing in these Terms limits those rights.

18. United States legal compliance

You represent that You are not located in a country subject to a United States government embargo or designated as a terrorist supporting country, and that You are not on any United States government list of prohibited or restricted parties.

19. Severability and waiver

If any provision of these Terms is held unenforceable or invalid, it will be changed and interpreted to accomplish its objective as far as the law allows, and the remaining provisions stay in full force. A failure to exercise a right or to require performance under these Terms does not affect the ability to exercise that right or require that performance later, and a waiver of one breach is not a waiver of any later breach.

20. Translation

If We make these Terms available in another language, the English text prevails in a dispute.

21. Changes to these Terms

We may modify or replace these Terms at any time. For a material change We will make reasonable efforts to give at least 30 days' notice, for example inside the Application or by email, before the new terms take effect. What counts as material is decided by Us in good faith. By continuing to use the Service after a revision takes effect You agree to the revised Terms. If You do not agree, stop using the Service.

22. Contact

Tropolin Labs LLC. Questions about these Terms: legal@tropolinlabs.in