1. Provider
Webentwicklung Thomsen
Nils Thomsen
Westerende 3
25584 Norstedt
Germany
Email: kontakt@webentwicklungthomsen.de
2. Scope
These terms of service apply to the mobile app “KA:OS” and to optionally provided related functions such as cloud sync, circles, invitations and shared challenges.
3. Subject matter
KA:OS is an app for personal organisation of habits, mood, weekly planning, journal entries and optional social accountability.
The app is provided in its current version. There is no claim to any specific function, uninterrupted availability or any specific compatibility beyond the mandatory legal framework.
4. Paid features
The core features of KA:OS can be used locally on the device.
Additional features may be unlocked via in-app purchase, in particular “KA:OS Pro”. Unless stated otherwise in the app, this is a one-time purchase and not a subscription.
Purchase processing, billing, cancellations and refunds are handled through the Apple App Store and are additionally subject to Apple's terms. Mandatory consumer rights remain unaffected.
5. Requirements for use
Using KA:OS requires a compatible iPhone, a supported iOS version and, where applicable for download or in-app purchases, an Apple account.
Some features may also require permission for system access, for example calendar, Health or contacts. These functions are voluntary and the app can also be used without these permissions.
6. Optional cloud and circles features
Certain functions, especially cloud sync, invitations, friend connections and shared challenges, require an optional cloud connection.
If you use these features, you are responsible for only using lawful content and information and for not infringing the rights of third parties. In particular, you may not distribute insulting, unlawful, misleading or abusive content via KA:OS.
Where provided in the app, you can delete your cloud account directly inside the app.
7. Permitted use
You receive a simple, non-exclusive, non-transferable right to use KA:OS for private purposes within the scope of these terms of service.
The following is prohibited in particular:
- abusive or unlawful use of the app
- interference with the security, stability or availability of the app
- automated, disruptive or manipulative use
- reverse engineering unless expressly permitted under mandatory law
- using KA:OS to infringe the rights of third parties
8. No medical or therapeutic service
KA:OS is intended for personal organisation, reflection and self-observation. The app does not replace medical, psychological or therapeutic advice, diagnosis or treatment.
KA:OS is not an emergency service. In acute physical or mental health crises, you should contact appropriate medical, therapeutic or public authorities.
9. Availability, maintenance and changes
I aim to provide KA:OS with as little disruption as possible. Temporary restrictions, maintenance periods, technical issues or individual feature changes may nevertheless occur.
Where legally permissible and necessary, KA:OS may be further developed, technically adapted or changed. In the case of material changes that affect use, notices will be given to the extent required by law.
10. Rights to the app
All rights to KA:OS, in particular to the software, design, content, trademarks, texts and graphics, remain with Webentwicklung Thomsen or the respective rights holders.
11. Liability
I am liable without limitation in cases of intent and gross negligence, for damages resulting from injury to life, body or health, and under the German Product Liability Act.
In cases of ordinary negligence, I am only liable for the breach of essential contractual obligations; in that case liability is limited to the foreseeable damage typical for the contract.
In all other respects, liability is excluded to the extent permitted by law.
12. Privacy
Information on the processing of personal data can be found in the KA:OS privacy policy.
13. Term and termination
The user relationship runs for an indefinite period. You can stop using the app at any time by no longer using it or by removing it from your device.
The right to block or terminate use for good cause remains unaffected, especially in the event of serious or repeated violations of these terms of service.
14. Applicable law
The law of the Federal Republic of Germany applies, excluding the UN Convention on Contracts for the International Sale of Goods, unless mandatory consumer protection provisions provide otherwise.
15. Final provisions
If any provision of these terms of service is or becomes wholly or partially invalid, the validity of the remaining provisions shall remain unaffected.
Updated: March 26, 2026