Welcome

Thank you for accessing ImmiChange.

This app was developed with a simple goal: “To replicate the seamless, automatic wallpaper and lock screen switching of iOS on Android.” We want to bring that delightful experience—where you discover a new favorite memory every time you unlock your phone—to the Android community.

Originally, we aimed for direct integration with the Google Photos API, but due to its strict limitations, we changed course. Instead, we implemented “Local Mode.” This allows users to manually pick photos from Google Photos (or any gallery app) and enjoy the same automatic switching experience, even without an Immich server.

Getting Started (Setup Wizard)

When you first open the app, we ask for a few essential permissions to ensure everything runs smoothly.

Permissions & Initial Setup

• Notifications: To keep you informed about wallpaper updates or server connection issues.
• Battery Optimization: To prevent Android from closing the app, allowing it to update wallpapers in the background.
• Home Wi-Fi (SSID) Setup: Used to restrict Immich server syncing to when you are at home, ensuring zero data usage while on the go.

Immich Server Setup

To use Immich mode, you’ll need the following. (※If you only plan to use Local Photo mode, you can skip this step.)

• Server URL: The address of your Immich instance (e.g., http://your-ip:2283).
• API Key: A secure key to read your albums and photos.

How to Use the App

Select your preferred source from the Dashboard on the home screen.

Immich (Server) Mode

• Wi-Fi Synchronization: To save mobile data, new photos are only downloaded when you are connected to your designated Home Wi-Fi.
• Cache Management: The app maintains a rotation of photos within your specified cache limit (MB).

Local Mode

• Stability via Copying: Selected photos are copied to a permanent app storage area. This ensures your wallpaper remains set even if the original file is deleted.
• Photo Manager: Manage your collection in the “Manager” view. Long-press photos to enter selection mode for bulk deletion.

Settings Explained

• Update Interval: Choose between “On Screen Off” (Recommended) or fixed intervals (minutes, hours, or days).
• Compression: 75% is usually the “sweet spot” for great looks and low storage usage.
• Stroke Intensity: For Live Wallpapers, this adjusts how much the photo moves when you swipe.

Our Philosophy

• Smooth at 120FPS: We use high-speed hardware rendering to provide buttery-smooth transitions with minimal battery impact.
• Privacy First: Your API keys and photos never leave your device. We value your trust.