AndroSaver

An Android TV screensaver app for the Huawei TV Stick, Amazon Fire TV Stick, and any Android TV device. Choose between a photo slideshow (Google Drive, OneDrive, Dropbox, Immich, Nextcloud, Synology NAS, or device storage) or a fullscreen music visualizer — the perfect companion for listening to music on your TV. Put on some music, let the screen go idle, and AndroSaver turns your TV into an audio-reactive light show that pulses and morphs in real time.

What's New in v2.0

Three spectacular new visualizer effects — the biggest visual update yet:

- 🔺 TriFlux — A wall of triangles covering the entire screen, every edge pulsing with a rolling rainbow. On every beat, tiles hurl themselves to the foreground, bounce wildly off the screen edges, then snap back into the mosaic. Nothing sits still. - ⚡ Branches — A psychedelic fractal lightning tree erupts from screen centre: nine neon arms split recursively to depth 7, each segment drawn twice as a glowing halo and a white-hot core. Mid frequencies twist every branch angle in real time; beats fire extra arms and flood the screen with colour. - 🌈 Corridor — A first-person ride through an infinite neon rainbow corridor. Twenty-eight luminous frames rush toward you, their hues sweeping the full spectrum from far to near. Bass drives speed; every beat flares the nearest frames and launches glowing spark particles that streak from the centre outward.

Plus a full tune-up of every existing effect — smoother physics, denser geometry, and much more satisfying beat response across the board.

Features

Photo Slideshow

- Google Drive source — streams photos from a Drive folder using OAuth 2.0 device flow (no Google Play Services required) - OneDrive source — streams photos from Microsoft OneDrive using OAuth 2.0 device flow; works with personal and work/school accounts - Dropbox source — streams photos from a Dropbox folder via OAuth 2.0 authorization code flow; access token auto-refreshed using App Key + App Secret - Immich source — streams photos from a self-hosted Immich server via its REST API; API key auth; optional album filter - Nextcloud source — streams photos from any folder via WebDAV; works with app passwords and self-signed certificates - Synology NAS source — streams photos from any FileStation folder via the Synology DSM REST API; session re-authenticated automatically every 25 minutes - Device storage source — uses photos from the TV's local storage via MediaStore - All sources can be active simultaneously; images are merged and shuffled - Offline cache — up to 200 images / 300 MB stored locally; used automatically as a fallback when sources are unreachable - Six transition effects: Crossfade, Fade to Black, Slide Left, Slide Right, Zoom In, Zoom Out, plus a Random mode - Configurable time per image (5 s – 30 min) and transition speed (1 – 5 seconds) - Ken Burns effect — slow pan and zoom animation; each photo always comes to rest centered - EXIF orientation — portrait photos from phones are displayed upright regardless of source - Visualizer overlay — music visualizer rendered semi-transparently on top of the slideshow

Music Visualizer

Designed for listening sessions: start playing music in any app, let the screen idle, and AndroSaver takes over with a fullscreen light show that reacts to every beat.

- Thirteen audio-reactive OpenGL ES 2.0 effects: Yantra, Cube, TriFlux, Lissajous, Tunnel, Corridor, Nova, Spiral, Bubbles, Plasma, Branches, Spectrum, Waterfall - Reacts to system audio — works with any music or streaming app on the TV - Remote control — use the TV remote while the visualizer is running: - ← / → — previous / next visual effect - ↑ / ↓ — increase / decrease beat-response intensity (5 steps: Off → Subtle → Normal → High → Intense) - Any other key — dismiss the screensaver - Music Genre hint — tunes the beat-detection frequency weighting to the music style (Any / Electronic / Rock / Classical); see genre hint details below - Auto-cycle mode rotates through all effects on a configurable interval (off by default) - Configurable effect and intensity via Settings

Photo Slideshow

- Remote control while slideshow is running: - → — skip to next image immediately - ← — go back to previous image - Any other key — dismiss the screensaver

General

- Clock overlay — date and time shown in the corner (available in both Slideshow and Visualizer mode) - Weather widget — current temperature and conditions from OpenWeatherMap (available in both modes) - Schedule — restrict the screensaver to a configurable active time window (e.g. 08:00–22:00) - Preview mode — test the screensaver from the Settings app without activating the system screensaver - In-app updater — checks GitHub Releases on each Settings open; prompts to install if a newer build is available; update channel (Stable / Dev) selectable in Settings - Registered as a system Dream Service — appears in Android TV's screensaver settings

Activating the Screensaver

- Android TV: Settings → Device Preferences → Screen saver → Select AndroSaver - Tablet / Phone: Settings → Display → Screen saver → Select AndroSaver (exact path varies by Android version and OEM) -The screensaver activates automatically when the device is idle (TV) or charging and idle (tablet/phone).

Using on a Tablet or Phone

AndroSaver works on any Android device — not just Android TV. All features (photo slideshow, music visualizer, clock, weather) work as-is.

A few differences compared to TV:

- Remote navigation (← → to switch effects or skip photos, ↑ ↓ to adjust intensity) requires a connected keyboard or D-pad. Without one, the screensaver still runs; you just can't switch effects mid-session. - Touch dismisses the screensaver in slideshow mode — this is standard Android behaviour. - The screensaver activates while the device is charging and idle, rather than just idle.

License

Copyright © 2026 Tom Stocker. All Rights Reserved.