PlainApp is a free, open-source Android app that turns your phone into a self-hosted management hub accessible from any web browser on the same network - no accounts, no cloud, no subscriptions.

Why PlainApp?

Most phone-management tools route your data through their own servers, lock features behind subscriptions, or show ads. PlainApp is different:

100% local - your data never leaves your network
End-to-end encrypted - every connection is secured with TLS + XChaCha20-Poly1305
Free and ad-free - no purchases, no upsells, ever
Fully open-source - audit the code, build your own binary, or contribute

Features

Web-Based Phone Management
Open a browser on any device connected to the same Wi-Fi network to manage your Android phone - no app installation required on the computer side.

Files - Browse internal storage, SD card, and USB drives; upload, download, rename, delete
Media - View and manage photos, videos, and audio; stream them in the browser
Contacts - View, search, and manage contacts
SMS & Calls - Read messages and call logs; send SMS from your desktop
Apps - List installed apps and export APKs
Notifications - Mirror phone notifications to the browser in real time
Screen Mirror - Live-stream the phone screen to the browser with audio and remote control support
Device Info - Check battery, storage, network, and system details

Built-in Android Tools
PlainApp is also a capable standalone app:

Markdown Notes - Write and organize notes with a clean editor
RSS Reader - Follow your favorite websites with a distraction-free reader
Video & Audio Player - Full-featured media player with playlist support
TV Cast - Cast media to any DLNA/Chromecast-compatible TV
Peer-to-Peer Chat & File Sharing - Share files and messages directly between devices without a server
Pomodoro Timer - Stay focused with a built-in work timer
Sound Meter - Measure ambient noise levels in real time

Privacy & Security

No Firebase Analytics or Messaging - crash reporting is optional and opt-in
Zero data sent to any third-party server
All traffic between phone and browser is encrypted
No account registration required

Links

Github: https://github.com/plainhub/plain-app
Reddit: https://www.reddit.com/r/plainapp