Independent software studio
Focused apps that respect your device and your data.
AltSys Lab builds practical tools for Android and the web — calculators, players and utilities that run locally, explain what they do, and are upfront about everything else.
Local-first
Your data stays on your device unless a feature truly needs the network.
No hidden trackers
No covert analytics or fingerprinting. Any ads are disclosed in the app's privacy policy.
No account walls
Core features work without signing up for anything.
Hardware-backed security
Sensitive values are encrypted with the Android KeyStore.
Apps
Each one does a specific job well, works offline where it can, and tells you exactly what it does with your data.
How we build software
A short list of rules every AltSys Lab app has to follow before it ships.
About the studio- 01
Verifiable Accuracy
We disclose what software actually does rather than inflating marketing claims. Audio outputs, position sizing, and network handshakes are reported with verifiable origin telemetry.
- 02
Privacy by Design
Local-first wherever possible. No trackers, telemetry bloat, or surreptitious background profiling. If a feature doesn't need cloud synchronization, it runs exclusively on your device.
- 03
Crafted Engineering
Strict static typing, hardware-backed keystores, deterministic state machines, and tested domain models provide resilience against real-world failures.
- 04
Honest Software
Zero deceptive countdown timers, fake review counters, or manipulative growth loops. We build software tools we are proud to use ourselves every day.
Questions, feedback, or a bug to report?
Messages go straight to the people who build the apps. We usually reply within one to two business days.