Legal

Terms of Use

Effective 26 September 2026

These terms are an agreement between you and Appstract Studio ("Shyn", "we", "us") for the Shyn app and website. Products you buy through the app are sold by Greymark Studio Limited — section 4 explains which company you are dealing with for what. By creating an account or using Shyn you agree to these terms. Our Privacy Policy explains how we handle your data.

Shyn is not medical advice. Scores, routines, ingredient checks and Sage's replies are cosmetic guidance generated by software. They are not a diagnosis and are not a substitute for a doctor or dermatologist. If you have a skin condition, a reaction, or any concern about your health, see a professional.

1. Who can use Shyn

You must be at least 16 years old and able to enter a binding agreement. You are responsible for keeping your account secure and for everything done with it.

2. Your account

You can use Shyn without signing in — your scans and routine are kept on your device's guest account. Signing in with Apple or Google saves that history and moves it to a new phone. Give us accurate information and keep it up to date. You can delete your account at any time from Profile → Privacy & data.

3. What Shyn does

Shyn analyses photos of your face to produce skin scores, suggests a routine based on your quiz answers and scans, checks ingredient lists for clashes, finds similar products, and lets you buy products through the app. Results depend on photo quality, lighting and the information you give us, and will vary between scans. We work to improve accuracy but do not guarantee any result.

4. Who you are contracting with

Two companies sit behind Shyn, and which one you are dealing with depends on what you are paying for.

"Shyn", "we" and "us" in these terms mean whichever of the two is responsible for the thing being described. Both are bound by these terms and you can raise any issue with either of them at the address in section 17.

5. Shyn Premium subscriptions

6. Buying products through Shyn

7. Refunds, returns and cancellations

This section covers physical products, which Greymark Studio Limited sells you. Subscription refunds are handled by Apple and are covered in section 5.

To start any of the above, email hello@appstract.studio with your order number.

8. Beta features

While Shyn is in beta, features may change, break or be removed. Data logged during the beta may be reset if we change how a feature works. We will tell you in the app before that happens.

9. Acceptable use

Do not upload photos of anyone other than yourself without their consent, try to break or reverse-engineer the service, scrape it, use it to build a competing dataset, or use it in a way that is unlawful. We may suspend or close accounts that do.

10. Your content

You own the photos and information you give Shyn. You grant us a licence to store and process them only to provide the service to you, as described in the Privacy Policy. Delete a scan or your account and that licence ends.

11. Our content

The Shyn app, its design, scores, text and software are ours or our licensors'. You may use them for your personal, non-commercial use of the app and nothing else.

12. Disclaimers and liability

Shyn is provided "as is". To the fullest extent the law allows, we exclude all warranties and are not liable for any indirect, incidental or consequential loss, or for any loss arising from reliance on scores, recommendations or chat replies. Our total liability to you for any claim is limited to the amount you paid us in the 12 months before the claim. Nothing here limits liability that cannot be limited by law, including for death, personal injury caused by negligence, or fraud, and nothing affects your statutory consumer rights.

13. Apple

These terms are between you and us, not Apple. Apple has no obligation to provide maintenance or support for Shyn. We are solely responsible for any warranty for the app, whether express or implied; if the app fails to conform to any warranty that applies, you may notify Apple and Apple will refund what you paid for the app, and to the maximum extent the law allows Apple has no other warranty obligation at all. Apple is not responsible for any claim relating to the app, including product liability, legal compliance or intellectual property claims. Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them against you. You confirm you are not in a country subject to a US Government embargo and are not on any US Government list of prohibited parties.

14. Ending the agreement

You can stop using Shyn and delete your account at any time. We may suspend or end your access if you breach these terms or if we discontinue the service, with notice where reasonably possible. Sections 10 to 15 survive termination.

15. Law and disputes

These terms are governed by the laws of England and Wales, and the courts of England and Wales have exclusive jurisdiction, except that consumers in other countries keep the protection of their local mandatory laws and courts.

16. Changes

We may update these terms. If a change is material we will tell you in the app at least 14 days before it takes effect. Continuing to use Shyn after that means you accept the new terms.

17. Contact

Email hello@appstract.studio for anything, including product orders — it reaches both companies.

Appstract Studio (United Kingdom) — the Shyn app and Premium subscriptions.
Greymark Studio Limited (Hong Kong) — product orders and payments.