Terms of Use
These Terms of Use ("Terms") govern your use of the ÉTALON mobile application (the "App") and related services, provided by RoofStacks ("we", "us"). By downloading or using the App you agree to these Terms. If you do not agree, do not use the App.
1. The service
ÉTALON converts a clothing or shoe size you know at one brand ("house") into the corresponding size at another house and in other size systems, and lets you keep profiles, measurements, sizes and conversions. You can use the App as a guest or, optionally, sign in to back up and sync your data. We may add, change or remove features at any time.
2. Size guidance only
Results, equivalents and fit notes are estimates based on each house's published size charts and our own data. Sizing can differ between collections, styles, materials and production runs, and houses may change their charts without notice. Results are guidance, not a guarantee of fit. Always check the retailer's size information before buying. We are not responsible for purchases, returns or exchanges made on the basis of a result.
Brand names and trademarks shown in the App belong to their owners. Their use identifies the houses whose size charts we refer to and does not mean that any house endorses or is affiliated with ÉTALON.
3. Accounts
You may sign in with Apple, Google or an email link. You are responsible for keeping access to your sign-in method secure and for the activity on your account. You must be at least 16 years old to use the App. You can delete your account at any time in the App under Account › Privacy & permissions › Delete account. How we handle your data is described in our Privacy Policy.
4. ÉTALON Privé
The free plan includes three complimentary conversions and two profiles. ÉTALON Privé unlocks unlimited conversions and unlimited profiles and is offered as:
- Monthly and yearly memberships: auto-renewing subscriptions;
- Lifetime: a one-time purchase that does not renew.
Prices are shown in the App before you buy and may vary by country. Payment is charged to your Apple Account or Google Play account at confirmation of purchase.
- Subscriptions renew automatically at the same price and length unless cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period.
- You can manage or cancel a subscription in your App Store or Google Play account settings. Cancelling stops future renewals; access continues until the end of the period you paid for.
- If a free trial is offered, any unused part of it ends when you buy a subscription.
- Refunds are handled by Apple or Google under their policies. Nothing in these Terms limits the rights you have under consumer protection law.
- You can restore previous purchases in the App with Restore purchases.
If we change subscription prices, Apple or Google will notify you as their rules require, and you can cancel before the change applies.
5. Privacy
The App shows no ads. With your permission we measure how the App is used and which campaigns bring people to ÉTALON; you can change this at any time under Account › Privacy & permissions. Details are in our Privacy Policy.
6. Acceptable use
You agree not to:
- copy, scrape, extract or resell the App's size data, conversions or content, or use them to build a competing product;
- reverse engineer, decompile or modify the App, except where the law allows it;
- bypass the free plan limits, purchase verification or any security measure;
- use the App in a way that is unlawful, harms others or interferes with the service.
7. Intellectual property
The App, its design, text, size data compilations, software and the ÉTALON name and logo belong to RoofStacks or its licensors. We grant you a personal, non-exclusive, non-transferable, revocable licence to use the App on devices you own or control, for your own non-commercial use, under these Terms. The data you enter remains yours.
8. App store terms
If you downloaded the App from the Apple App Store, Apple's Licensed Application End User License Agreement also applies. If anything in these Terms conflicts with it, Apple's agreement prevails for your use of the iOS App. Apple is not a party to these Terms and has no obligation to provide maintenance or support for the App.
If you downloaded the App from Google Play, the Google Play Terms of Service also apply to your purchase and download.
9. Disclaimers and limitation of liability
The App is provided "as is" and "as available". To the extent permitted by law, we make no warranties that it will be uninterrupted, error-free or that results will be accurate for your body or a particular garment.
To the extent permitted by law, RoofStacks is not liable for indirect, incidental or consequential damages, or for loss of data, profits or purchases, arising from your use of the App. Our total liability for any claim relating to the App is limited to the amount you paid us for ÉTALON Privé in the twelve months before the claim. Nothing in these Terms excludes liability that cannot be excluded by law, including for gross negligence or wilful misconduct.
10. Termination
You can stop using the App and delete your account at any time. We may suspend or end your access if you seriously or repeatedly breach these Terms. Sections 2, 7, 9 and 11 continue to apply after termination.
11. Governing law
These Terms are governed by the laws of the Republic of Türkiye. Disputes are subject to the courts and enforcement offices of Istanbul, without prejudice to the mandatory rights of consumers, including the right to apply to consumer arbitration committees and consumer courts where you live.
12. Changes and contact
We may update these Terms. We will change the date at the top of this page and, for significant changes, tell you in the App. If you keep using the App after a change takes effect, the updated Terms apply.
Questions about these Terms: apps@roofstacks.com