Android app is live
Your photos.
No cloud required.
P-Sphere backs up your camera roll and syncs photos directly between your Android devices over Wi-Fi. Nothing passes through a server you don't own.
Requires Android 8.0 or higher
Available now
What works today
The sync engine is stable. These features are ready to use.
Automatic backup
P-Sphere runs quietly in the background and backs up your camera roll as you shoot. It waits for Wi-Fi and skips when battery is low.
P2P device sync
Two phones on the same network find each other automatically using mDNS. No server, no IP config, no pairing codes needed.
Delta sync
Photos are identified by SHA-256 hash, not filename. Only missing files transfer, so syncs stay fast regardless of library size.
Completely offline
Sync is device-to-device over your local network. No external servers, no telemetry, no account required to use the app.
Getting started
Up and running in two minutes
Installing takes a few taps and syncing is automatic after that.
Download and sideload the APK
P-Sphere isn't on the Play Store yet. Download the APK and install it directly — takes about two minutes.
Installation guide →Open the app on both phones
As long as both devices are on the same Wi-Fi network, they'll discover each other automatically. No setup needed.
Approve the connection once
Confirm on both devices the first time. After that, syncing happens in the background on its own.
Roadmap
What's coming
P-Sphere is growing into a full self-hosted photo platform. These are the next pieces.
Core server
A Node.js backend you self-host at home. Permanent photo storage, web UI, and the AI pipeline all run through it.
Web dashboard
A browser-based photo viewer served by the core server. Browse your timeline and manage albums from any device on your network.
AI search
Search photos using natural language. Runs locally through Ollama or any OpenAI-compatible endpoint. Nothing leaves your machine.
Smart albums
Automatically group your library by trip, people, pets, and place using a local AI model.
Face recognition
Detect and cluster faces across your library entirely offline using ONNX models.
Multi-user support
Separate accounts and libraries for each person on a shared server, with optional shared albums.
Download P-Sphere
The Android app is free. Install it in minutes and keep your photos on your own devices.
Download for Android