Last updated: 30 September 2026

Terms of Use

1. Agreement

By installing or using Kalender (“the app”) you agree to these terms. The app is provided by Heyisoft. If you do not agree, please do not use the app.

2. Store terms

If you downloaded the app from the App Store, Apple’s Licensed Application End User License Agreement also applies. If you downloaded it from Google Play, the Google Play Terms of Service also apply. Where they conflict with these terms on payments or refunds, the store’s terms win.

3. What Kalender does

Kalender helps you plan your day and rebuild it when things change. It suggests where tasks go; nothing moves without your confirmation. It reads your calendar to plan around your meetings and never adds, changes or deletes events. You remain responsible for your own schedule and deadlines, and you should not rely on the app alone for anything critical.

4. Free version and Kalender Pro

• The free version includes the daily plan, calendar reading, the moved tasks list and a limited number of day rebuilds each week.
• Kalender Pro is an auto-renewing subscription, offered monthly or yearly. It unlocks the features described on the purchase screen, such as unlimited day rebuilds.
• The price and what is included are shown in the app before you buy. Prices may differ by country and include any taxes the store applies.
• Payment is charged to your Apple Account or Google account when you confirm the purchase.

5. Automatic renewal

• The subscription renews automatically at the end of each period, for the same length and at the then-current price, unless you cancel it.
• On the App Store, cancel at least 24 hours before the end of the current period; your account is charged for renewal within the 24 hours before the period ends.
• On Google Play, you can cancel at any time before the renewal date.
• If the price changes, Apple or Google will tell you in advance, and where required ask for your agreement.

6. Free trial

The yearly plan may include a 7-day free trial. When the trial ends, the yearly subscription starts and you are charged, unless you cancel before the trial ends (on the App Store, at least 24 hours before). If you buy a subscription during a free trial, any unused part of the trial is forfeited.

7. How to cancel

• iPhone: Settings, then your name, then Subscriptions, then Kalender.
• Android: Google Play Store, then your profile picture, then Payments and subscriptions, then Subscriptions, then Kalender.
• Deleting the app does not cancel the subscription.
• After you cancel, Kalender Pro stays active until the end of the period you paid for.

8. Refunds and restoring purchases

Payments are handled by Apple or Google, so refund requests go to them under their policies: Apple at reportaproblem.apple.com, Google through the Google Play Store. We cannot issue refunds ourselves. If you reinstall the app or get a new phone, use “Restore purchases” in the app with the same Apple or Google account.

9. Your data

Your tasks and plans are stored only on your phone, and we have no copy of them. The app keeps a daily local backup and lets you export everything to a file; keep an export somewhere safe if your data matters to you, because if the phone is lost or the app is deleted, we cannot restore it. See the Privacy Policy.

10. Licence and fair use

• We grant you a personal, non-transferable licence to use the app on devices you own or control.
• Do not copy, reverse-engineer, resell or redistribute the app, or try to get around the subscription.

11. Changes to the app

We may add, change or remove features. If a change takes away a paid feature during a period you have already paid for, you can ask the store for a refund under its policy.

12. Warranty and liability

The app is provided “as is”. To the extent the law allows, we give no warranty that it will be error-free, and we are not liable for indirect loss such as a missed appointment or lost data. Nothing in these terms limits rights you have under consumer protection law that cannot be waived.

13. Governing law

These terms are governed by the laws of the Republic of Türkiye. If you are a consumer living elsewhere, you keep the protection of the mandatory laws of your country.

14. Changes to these terms

We may update these terms. Changes will appear here with a new “last updated” date.

15. Contact

Heyisoft, heyisoft@gmail.com. See also Contact and support.