Independent software studio
We build software worth owning.
J20 designs, builds and ships its own apps. Crafted, cross-platform, and made to last.
Alkando — our first app — is coming soon.
The stack
Built with tools we trust.
Native where it counts, cross-platform where it helps.
Flutter
Dart
Swift
Kotlin
KMP
Java
J20 · Apps
The apps we build.
Software we design, build and ship ourselves — see what's in the workshop and what's on the way.
J20 Labs
Where the apps are made.
The workshop behind J20 — native and cross-platform engineering, built in the open with Flutter, Swift, Kotlin and KMP.
Why J20
A small studio with serious standards.
Craft over volume
Fewer apps, made properly — down to the empty states most teams skip.
You own what you buy
Clear pricing, one account, no dark patterns around your money.
Built in the open
Public roadmaps and shipping logs. You always know what's next.
Coming soon
Alkando
Our first app is in the workshop. More when it's ready.
Built in the open.
Follow J20 Labs as it designs and ships its first apps.