My Own iOS Apps
Available
These apps are ready to download from the App Store right now. Each one makes one thing in your day easier. Download them, try them out, and feel free to share your feedback.
Padel scoring on your wrist: one tap per point, the watch handles the rest — score, sets, serve and end changes. Every match lands as a workout in Apple Health.
Today's weather — and the answer to "where is it warm enough to swim in February?" With 211 destination profiles, a school holiday planner and weather history back to 1940.
Is a balcony solar system worth it for your balcony? Orientation, tilt and shading are measured with the compass and camera — from that comes the expected annual yield.
The red and blue car trains between Niebüll and Westerland in a single departure board — sorted chronologically, with a countdown to loading close. Works without a signal, too.
Log drinks with a tap and keep track of blood alcohol, caffeine, sugar and cost through the evening — with a water recommendation. Everything stays on your device.
Darts scoring without the mental math: 501, 301 and Cricket with every rule variant, checkout routes for every remaining score, and six party games for the evening.
Send files directly from device to device — no cloud, no account. Anyone without the app gets a QR code and downloads it straight in their browser.
The official exam questions for the German recreational boating licence, coastal and inland waters — with shuffled answers, all 15 real exam papers, a timer and honest scoring.
Determine range of motion from a photo: tap three points, read the angle — the neutral zero notation comes right along with it, with eight joint templates.
In Development
One more app is currently in development. Here's a preview of what's coming.
Principles
None of the apps has a sign-in screen, asks for an email address, or requires a password. Download and go.
None of the apps contains ad components or an advertising ID. At most, anonymous usage numbers are collected through a German provider — solely to understand which features are actually used and where an improvement is worthwhile. This can be turned off in the app.
What you enter in an app stays on your device or in your own iCloud. There's no server where user data comes together.