Leucy

Legal / Terms of Use

Terms of Use

Effective November 9, 2026

These Terms of Use ("Terms") are an agreement between you and Leucy ("Leucy", "we", "us") about your use of the Leucy mobile app (the "App") and this website (the "Site"), together the "Service". By downloading or using the Service, you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the Service.

Leucy is not medical advice. The App is a tracking and education tool. It does not diagnose, treat or prevent any condition, and it never recommends a dose. Always follow your healthcare provider and the instructions that come with your medication. If you think you have a medical emergency, call your local emergency number right away.

1. Who can use Leucy

You must be at least 16 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. The App is intended for personal, non-commercial use by people who are using, or considering, a GLP-1 or similar medication under the care of a licensed healthcare provider.

2. Health and medical disclaimer

The Service provides general information and tools to record and view your own data. It is not a medical device and is not a substitute for professional medical advice, diagnosis or treatment. In particular:

  • The App never recommends, changes or comments on a medication dose. The doses and escalation plan shown are only what you enter.
  • The estimated medication-level curve is an educational model based on published half-lives. It is not a measurement of the medication in your body and must not be used to make dosing decisions.
  • Protein and calorie targets are general estimates. Your provider may recommend different targets for you.
  • Insights about side effects describe patterns in what you logged. They are not a diagnosis.
  • Do not ignore professional advice or delay seeking it because of something in the App.

Read our full Medical Disclaimer for more.

3. AI features and estimates

Meal scans, menu scans and the food coach use artificial intelligence. AI output can be wrong, incomplete or inconsistent. Nutrition values are estimates, and portion sizes, ingredients and preparation methods may be misread. You are responsible for checking estimates and adjusting them where needed. The food coach is limited to general food, fluid and logging tips and is designed to refuse dosing and medical questions. If you have allergies, a medical condition or specific dietary needs, rely on your provider and food labels, not the App.

4. Your data and account

You own the data you enter. You give us permission to process it only as needed to provide the Service and as described in the Privacy Policy. You can use the App without an account. If you choose to sign in with Apple for backup, you are responsible for keeping your Apple account secure and for activity under your account. Because data is stored on your device by default, you are responsible for keeping your device and backups secure. We are not responsible for data lost because a device is lost, reset or replaced without a backup.

5. Subscriptions and billing

  • Plans. Leucy Pro is offered as an auto-renewing subscription, currently weekly, monthly or yearly. The price, billing period and any trial are shown in the App before you buy.
  • Billing. Payment is charged to your Apple account when you confirm the purchase, or when a free trial ends.
  • Auto-renewal. Your subscription renews automatically at the same price and period unless you turn off auto-renew at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends.
  • Free trials and offers. If a free trial is offered, it converts to a paid subscription unless you cancel at least 24 hours before it ends. Any unused part of a trial is forfeited when you buy a subscription. Introductory or promotional prices apply only as described when offered.
  • Cancelling. Manage or cancel in your Apple ID settings. Cancelling stops future renewals. You keep access until the end of the period you paid for.
  • Refunds. Purchases are processed by Apple, so refund requests are handled by Apple under its policies. We cannot issue refunds for App Store purchases directly.
  • Price changes. We may change prices. Apple will notify you in advance and, where required, ask for your consent before a higher price applies.

See Subscriptions and refunds for step-by-step help.

6. Acceptable use

You agree not to:

  • use the Service to buy, sell, obtain or distribute medication, or to give medical advice to others;
  • upload content that is illegal, infringing, or that contains other people's personal or health information without permission;
  • try to get around the food coach's safety limits or use the AI features to produce harmful content;
  • copy, modify, reverse engineer or resell the Service, except as the law expressly allows;
  • interfere with the Service, access it by automated means, overload our servers or probe for vulnerabilities without permission;
  • use the Service in violation of any law.

7. Our intellectual property

The Service, including its software, design, text, graphics, illustrations and the Leucy name and logo, is owned by Leucy or its licensors and protected by law. We grant you a personal, revocable, non-exclusive, non-transferable licence to use the App on Apple devices you own or control, as allowed by these Terms and the App Store's rules. If you send us feedback, we may use it without any obligation to you.

8. Third-party services

The Service works with third-party services such as Apple Health, Sign in with Apple, the App Store, Open Food Facts and AI model providers. Your use of those services is subject to their own terms, and we are not responsible for them. Nutrition data from Open Food Facts is provided by a community database and may contain errors.

9. Trademarks

Ozempic®, Wegovy®, Rybelsus® and Saxenda® are registered trademarks of Novo Nordisk A/S. Zepbound®, Mounjaro® and Trulicity® are registered trademarks, and Foundayo™ is a trademark, of Eli Lilly and Company. These names appear only to identify the medications you can track. Leucy is not affiliated with, sponsored by or endorsed by Novo Nordisk, Eli Lilly or any medication manufacturer.

10. Disclaimer of warranties

To the fullest extent permitted by law, the Service is provided "as is" and "as available", without warranties of any kind, whether express or implied, including warranties of merchantability, fitness for a particular purpose, accuracy and non-infringement. We do not promise that the Service will be uninterrupted, error-free or that estimates will be accurate. Some places do not allow these exclusions, so some of them may not apply to you.

11. Limitation of liability

To the fullest extent permitted by law, Leucy and its owners, staff and suppliers will not be liable for any indirect, incidental, special, consequential or punitive damages, or for any loss of data, health outcome, profits or goodwill, arising from your use of or inability to use the Service, or from decisions you make based on information in the Service. Our total liability for any claim relating to the Service is limited to the greater of the amount you paid us for the Service in the 12 months before the claim, or US $50. Nothing in these Terms limits liability that cannot be limited by law, such as for death or personal injury caused by negligence, fraud, or your statutory consumer rights.

12. Indemnity

To the extent permitted by law, you agree to defend and indemnify Leucy against claims, losses and costs, including reasonable legal fees, arising from your breach of these Terms or misuse of the Service.

13. Ending these Terms

You can stop using the Service at any time by deleting the App and cancelling any subscription. We may suspend or end your access if you seriously or repeatedly break these Terms, or if we stop offering the Service. If we discontinue the Service, we will give reasonable notice where possible so you can export your data. Sections that by their nature should survive will survive the end of these Terms.

14. Apple App Store terms

If you downloaded the App from Apple's App Store, these additional terms apply:

  • These Terms are between you and Leucy only, not Apple. Leucy, not Apple, is solely responsible for the App and its content.
  • Your licence is limited to using the App on Apple-branded products you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions.
  • Apple has no obligation to provide maintenance or support for the App.
  • If the App fails to conform to any applicable warranty, you may notify Apple and Apple will refund the purchase price, if any. To the maximum extent permitted by law, Apple has no other warranty obligation for the App.
  • Leucy, not Apple, is responsible for any claims relating to the App, including product liability claims, claims that the App fails to meet legal or regulatory requirements, and consumer protection, privacy or similar claims.
  • Leucy, not Apple, is responsible for investigating, defending, settling and discharging any third-party claim that the App infringes intellectual property rights.
  • You confirm that you are not located in a country subject to a US Government embargo or designated as a "terrorist supporting" country, and that you are not on any US Government list of prohibited or restricted parties.
  • You must comply with any applicable third-party terms when using the App.
  • Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

15. Governing law and disputes

Before filing a claim, please contact us at dbromberg1@gmail.com so we can try to resolve it informally. These Terms are governed by the laws of the State of Delaware, United States, without regard to its conflict-of-law rules. Any dispute that cannot be resolved informally will be heard in the state or federal courts located in Delaware, and you and we consent to their jurisdiction. If you are a consumer living outside the United States, you also keep the protection of the mandatory laws of your country of residence and may bring a claim in your local courts.

16. Changes

We may update these Terms from time to time. We will post the new version here and update the date at the top. If a change is material, we will tell you in the App before it takes effect. If you keep using the Service after the change, you accept the new Terms.

17. General

These Terms, together with the Privacy Policy and any terms shown at purchase, are the entire agreement between you and us about the Service. If a provision is found unenforceable, the rest remain in effect. Our failure to enforce a provision is not a waiver. You may not transfer these Terms without our consent. We may transfer them as part of a merger, acquisition or sale of assets.

18. Contact

dbromberg1@gmail.com