The short version.

Last updated: 6 August 2026

You may use our apps for your own personal use. We do our best to keep them working well, but they're provided as they are. Subscriptions renew until you cancel, and you cancel in the App Store — not with us.

1. Who these terms are with

These Terms of Use ("Terms") are an agreement between you and Sirek Apps ("we", "us"), a software studio based in Gdańsk, Poland. They apply to our iOS apps, including PRO.TEIN, and to this website.

By downloading or using an app, you accept these Terms. If you don't agree with them, please don't use the app.

2. Your licence

We grant you a personal, non-exclusive, non-transferable, revocable licence to use our apps on devices you own or control, in line with the App Store Terms of Service.

You may not copy, sell, rent, sublicense, reverse-engineer, decompile, or attempt to extract the source code of our apps, except where that restriction is prohibited by applicable law.

3. Your content

Anything you enter into an app is yours. We claim no ownership over it, and — as set out in our Privacy Policy — it stays on your device and in your own iCloud account. You are responsible for your content and for keeping your own backups.

4. Subscriptions & purchases

Some features require a paid subscription or a one-time purchase. All payments are processed by Apple through In-App Purchase; we never handle your payment details.

Prices are shown in the app before you buy, in your local currency.
Where a free trial is offered, any unused portion is forfeited if you buy a subscription during the trial.
Subscriptions renew automatically at the end of each period unless auto-renew is turned off at least 24 hours beforehand.
Your account is charged for renewal within 24 hours of the end of the current period.
You can manage or cancel a subscription in your App Store account settings at any time. Deleting the app does not cancel a subscription.
A lifetime purchase, where offered, is a one-time payment and does not renew.

5. Refunds

Purchases are handled by Apple, so refunds are handled by Apple too, under their policies. You can request one at reportaproblem.apple.com. We cannot issue refunds directly. If you are an EU consumer, your statutory rights are unaffected.

6. Acceptable use

Please don't use our apps unlawfully, don't interfere with or disrupt them, and don't try to gain unauthorised access to any part of them or to any related systems.

7. Not medical advice

Some of our apps, including PRO.TEIN, help you record nutrition or fitness information. They are tools for tracking, not medical devices, and nothing in them is medical or dietary advice. Always speak to a qualified professional before making decisions about your health or diet. You use them at your own discretion.

8. Third-party services

Our apps rely on services we don't control, such as Apple's App Store, iCloud, and Apple Health, RevenueCat for subscription management, and — in PRO.TEIN — the Open Food Facts database for barcode lookups. We aren't responsible for the accuracy, availability, or content of third-party services. Nutrition data returned from Open Food Facts is community-maintained and may be incomplete or wrong.

9. Availability & changes

We may update, change, or discontinue an app or any of its features. We'll try to avoid disruption where we reasonably can, but we can't guarantee an app will always be available or supported indefinitely.

10. Disclaimer & liability

Our apps are provided "as is" and "as available", without warranties of any kind to the extent permitted by law. We do not warrant that they will be uninterrupted, error-free, or that any data will be preserved.

To the fullest extent permitted by law, our total liability arising out of or relating to an app is limited to the amount you paid us for it in the twelve months before the claim. Nothing in these Terms limits liability for death or personal injury caused by negligence, for fraud, or for anything else that cannot lawfully be limited. If you are a consumer, your mandatory statutory rights are unaffected.

11. Changes to these Terms

We may revise these Terms as our apps evolve. We'll update the "last updated" date above, and continued use after a change means you accept the revised Terms.

12. Governing law

These Terms are governed by the laws of Poland. If you are a consumer, you benefit from any mandatory provisions of the law of the country in which you reside, and you may bring proceedings in your local courts.

13. Contact

Questions about these Terms? Email support@sirekapps.com.