~$ whoami
Rabi Kumar Das — Android / Flutter developer
Built entirely on a phone, via Termux.

Rabi Kumar Das रबि कुमार दास

Independent Android & Flutter developer. I design, build, and ship apps end-to-end — from FFmpeg pipelines to Play Store release — working entirely from a phone.

about

One developer, one phone, no studio.

I build native Android and Flutter apps independently — video and audio tools, AI-assisted utilities, and small on-device ML apps — and take each one from idea to a published, monetised release on the Play Store.

My entire workflow runs on Termux with a proot-distro Ubuntu layer, which means every build, every Gradle run, and every FFmpeg pipeline happens on the same device the apps are made for.

  • LanguagesKotlin · Dart · JS
  • FrameworksFlutter · Media3
  • MediaFFmpeg · Whisper ASR
  • On-device AIONNX · GGML
  • MonetisationAdMob · Start.io
  • EnvironmentTermux · proot-distro
apps

Shipped & in progress

PC

Passport Cam

AI background removal, country-specific size templates, and one-tap export — built with Flutter.

View on Play Store

Have an app idea, or want to talk about a build?

Email me