~ calmbit.cz
I build and maintain applications that simply work — reliably, quietly, and with a human touch.
03:00 — backups complete · monitoring OK · you sleep, your apps keep running
I build custom applications — from web systems to mobile apps. Fast, secure and maintainable.
Updates, monitoring, bug fixes. Your application keeps running even while you rest.
Linux servers, backups, security. Stable operations with (almost) zero downtime.
Architecture, development efficiency, process improvement — in plain language, no buzzwords.
AI helped you build the app. I help make sure it can run safely and reliably in production. I review the code, security, database, backups and infrastructure, uncover the risky spots and help fix them.
We don't have to rewrite something that already works. The goal is to find out what is fine, what needs attention and what could cause trouble the moment real users start using the app. Finally I set up monitoring, so you know about a problem before your customers do.
~/apps
I don't just build for clients. I run my own apps that solve real problems — calmly and without chaos.
in production
Calm record-keeping for housing association committees. Apartments, residents, documents and a history of changes in one place — without the chaos of spreadsheets and e-mails.
Your terminals, finally in order. Project-based workspace, session restore and live git status. Free on GitHub.
Your Claude Code limits in the macOS menu bar. Both the 5-hour and the weekly window: how much you have used and when it resets. Free on GitHub.
One tap and your people know you're OK. Coming soon to the App Store and Google Play.
coming soon
Offline-first logbook for SOTA, GMA, WWFF and POTA activations. One line, one Return, one logged QSO — exported to clean ADIF.
~/about
My name is Petr Hložek and I have been developing applications and managing servers for more than 20 years. I founded Calmbit because I believe technology can be reliable, calm and human at the same time.
You talk directly to the person who understands your project and looks after it personally — from design to day-to-day operations.
Write me a few lines about what you need help with. I will get back to you soon.
Or write to me at petr@calmbit.cz