Last updated: May 2026
Kayserlich is an iOS app and website developed and operated by Timm Kayser as a private individual. Your privacy is important. This policy explains clearly what data is collected, how it is used, and what your rights are.
Timm Kayser
Contact: wohnen@someabout.de
Further contact details are available in the Imprint.
If you subscribe to connect your own station, Kayserlich lets you enter your Davis WeatherLink API Key and API Secret in the Settings screen. These credentials are stored exclusively on your device using Apple's secure Keychain and are never transmitted to any server operated by Kayserlich or its developer.
Kayserlich offers one optional auto-renewable subscription, sold and processed by Apple through the App Store. Kayserlich never receives or stores your payment details — Apple handles all billing in line with its own privacy policy.
When you contact the developer through the app's built-in contact form, your message is sent by email together with basic device context — iPhone model, iOS and app version, language, battery level, timezone, network type and appearance mode — so your report can be understood and reproduced. It is used only to reply to you and is not stored on any Kayserlich server.
To display live weather data, the app makes API requests to the following third-party services on your behalf:
Each of these services is subject to its own privacy policy. Kayserlich has no control over the data practices of these third parties. Please review their respective policies if you have concerns.
Kayserlich does not collect, transmit, or store any of the following:
This website is hosted as a static site. Standard server access logs may be recorded by the hosting provider. These typically include IP addresses, browser type, and page requests. Kayserlich has no direct access to or control over these logs.
If you use the contact form on this website, your name, email address, and message are sent directly by email to the developer using your device's email capability. No message data is stored on any web server by this website. The email provider used to receive the message may process and store the content in accordance with its own privacy policy.
This website does not use cookies, tracking pixels, analytics scripts (such as Google Analytics), or any third-party tracking technology. No personal data is collected through browsing this site. The only data stored locally in your browser is your language preference, saved in localStorage to remember your selected language between visits.
Where applicable under the General Data Protection Regulation (GDPR), the legal bases for any data processing are:
Your API credentials stored in the iOS Keychain remain on your device until you delete the app or remove them manually in Settings. No data is retained on any server operated by Kayserlich. Email messages received via the contact form are retained in the developer's email inbox for correspondence purposes and are not shared with third parties.
If you are located in the European Economic Area, you have the following rights regarding your personal data:
To exercise any of these rights, please contact: wohnen@someabout.de
For reference, links to the privacy policies of third-party services used by the app:
Kayserlich is not directed at children under 13 years of age. The app does not knowingly collect personal information from children. If you believe a child has provided personal data, please contact the developer to have it removed.
This privacy policy may be updated from time to time. The date at the top of this page reflects the most recent revision. Continued use of the app or website after changes constitutes acceptance of the updated policy.
For any privacy-related questions or requests, please contact:
Timm Kayser · wohnen@someabout.de