J20 Labs

Where the apps come from.

J20 Labs is the workshop behind J20 — the place where ideas become apps that feel inevitable. Native where it counts, cross-platform where it helps, shipped in the open.

The stack

Tools we reach for.

Pragmatic, native-friendly and cross-platform. The right tool for each screen — not one hammer for every nail.

FlutterFlutter
DartDart
SwiftSwift
KotlinKotlin
Kotlin MultiplatformKMP
JavaJava
How we build

A few rules we don't break.

Small team, high standards. These keep us honest.

Native where it counts

Platform feel isn't a nice-to-have. We respect each OS instead of flattening them.

Cross-platform where it helps

Shared logic with KMP and Flutter so every platform moves together, faster.

Details are the product

Motion, empty states, the second-order moments — that's where good becomes great.

Ship in the open

Public roadmaps and shipping logs. Less mystery, more momentum.

From idea to ship

How an app gets made.

01

Sketch

We chase one sharp idea and prototype it until it earns its place.

02

Build

Cross-platform foundations, native polish, tight feedback loops.

03

Ship

Out the door early, improved in public, owned through your J20 account.

Got something worth building?

Whether it's a partnership or just a good idea — J20 Labs is listening.