Independent app studio · Darmstadt, Germany
Well-built apps.
Nothing extra.
Praus Software builds focused apps that do a lot and stay out of your way.
Our apps
One studio. Each app its own character.
Coming soonCalqo
Mental math for consulting, finance and assessments. Short sessions, real progress.
Discover CalqoMore in the making.
The next app is on the workbench. It will appear here when it is ready, not before.
How we build
Three rules for every app.
Focused
One job per app, done properly.
Calm
No dark patterns, no noise. The app waits for you, not the other way round.
Private
We collect as little as possible. This website: no tracking, no cookies, no ads.
The word is often described as the quality of a tamed horse: full strength, under control. That is how we think software should feel.
Who is behind it
A studio of one.
Praus Software is run by Jakob Praus, a logistics management student from Darmstadt who thinks in systems and likes things that simply work.
Every app is designed, built and supported by the same person. If you write to us, that is who answers.