We build apps that work reliably, every day.
mk-sd is a software company based in Neuötting, Bavaria. We develop, publish and support apps for iPhone, from nutrition and health to training and habits.
Our apps
Every app has its own page with a manual, help and complete legal texts.

FoodNoteBook
FoodNoteBook logs a meal from a photo or a spoken sentence, and works out the calories and macros.

Gutline
Gutline is a private diary for digestive symptoms. Record an entry in about ten seconds and let the app show the pattern in your own entries, then take one clear page to your doctor.

Kettra
Kettra turns each habit into a visible chain and asks for nothing in return: no account, no sign-up, no data leaving the phone.

Paletteline
Paletteline is your personal colour analysis. One photo in daylight or seven short questions, and you get one of the twelve seasons, your four dimensions and the palette that goes with them, tried out on your own photo.

Plateline
Plateline logs a strength session in one tap per set, and tells you which plates to put on the bar.

Sixteen
Sixteen paces the runs and logs every station of a hybrid race, so training matches the format the race is actually run in.
How we work
Principles that apply to every one of our apps.
A clear scope
Each app focuses on one task and does it reliably. New features are added only when they make that task better.
Transparent legal texts
For every app we publish a privacy policy, terms of use and withdrawal information in German and English, freely accessible and kept up to date.
Support that answers
Every app has a manual and a help page. We answer requests from the contact form by email, in German or English.
Purchase through Apple
Apps and in-app purchases are handled by the Apple App Store. Subscriptions can be managed or cancelled at any time in the iPhone settings.
Company
Our apps cover different areas of everyday life, from nutrition and health to training and habits. We build every app ourselves, publish it on the App Store and keep supporting it after release: with updates, a manual, support and maintained legal texts.
- Company
- mk-sd
- Owner
- Maximilian Kuchlbauer
- Legal form
- Sole proprietorship (Einzelunternehmen)
- Registered in
- Neuötting, Bavaria, Germany
- Business
- Development and sale of software, in particular iPhone apps
- Distribution
- Apple App Store





