Terms of Use

1. Not medical advice

Ester helps you record doses, inventory, lab results, and body metrics. It does not — and is not designed to — recommend doses, compounds, protocols, or any course of treatment. Nothing in the app or on this site is medical advice, diagnosis, or treatment. Always consult your physician about your protocol and to interpret any results. Never disregard professional medical advice because of something you logged or saw in Ester. If you think you have a medical emergency, call your local emergency number.

You are solely responsible for your health decisions and for using medications as prescribed and directed by your clinician.

2. License

We grant you a personal, non-exclusive, non-transferable, revocable license to use Ester on Apple devices that you own or control, for your personal, non-commercial use, in accordance with these terms and with Apple's Licensed Application End User License Agreement, which also applies to your use of the app.

3. Subscription

Ester requires an auto-renewing subscription after a 7-day free trial.

• Payment is charged to your Apple ID at confirmation of purchase, or at the end of the free trial if you don't cancel before it ends.
• Your subscription renews automatically unless you cancel at least 24 hours before the end of the current period.
• You can manage or cancel your subscription in your device's Settings → Apple ID → Subscriptions.
• Prices may change; Apple will notify you in advance, and continued use after a change takes effect constitutes acceptance.
• Refunds are handled by Apple under App Store policies.

4. Your data is in your hands

Ester stores your data on your device only (see our Privacy Policy). That privacy comes with a trade-off you accept by using the app: we keep no copy of your data and cannot recover it if your device is lost, reset, or the app is deleted. You are responsible for backing up your device if you want your record preserved.

5. Acceptable use

You agree not to reverse engineer, decompile, copy, modify, resell, or redistribute the app or its content except as permitted by law; not to use the app in violation of any applicable law; and not to use the Ester name, logo, or screenshots in a way that suggests endorsement without written permission.

6. Intellectual property

The app, this website, and all related design, text, graphics, and code are owned by us or our licensors and are protected by copyright and other intellectual-property laws. Your data is yours — these terms give us no rights to it (and, by design, no access to it).

7. Disclaimer of warranties

Ester is provided "as is" and "as available", without warranties of any kind, express or implied, including fitness for a particular purpose, accuracy, or non-infringement. We do not warrant that the app will be error-free or uninterrupted, or that calculations (such as inventory estimates) are accurate — verify anything you rely on.

8. Limitation of liability

To the maximum extent permitted by law, we will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of data, health outcome, or decision made in reliance on the app. Our total liability for any claim relating to the app is limited to the amount you paid for your subscription in the twelve months before the claim arose.

9. Termination

We may suspend or end support for the app, and your license ends automatically if you breach these terms. You can stop using Ester at any time by cancelling your subscription and deleting the app.

10. Changes to these terms

We may update these terms from time to time. The current version will always be posted on this page with its effective date. Material changes will be noted in the app or on this site; continued use after a change takes effect constitutes acceptance.

11. Governing law

These terms are governed by the laws of the State of California, USA, without regard to its conflict-of-laws rules.

12. Contact

Questions about these terms? Email admin@castanedanetworks.com.