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Artificial Koi

Living trigonometric creatures: a generative, truly live wallpaper
New in version 1.2.0
First F-Droid release.
• Ten generative creature styles with ready-made and custom themes
• Creatures, speed, points, size, opacity, zoom, shape and color settings
• Energy saver mode
• About screen with version and license
• No ads, no tracking, no network access
A truly live wallpaper: glowing koi, jellyfish, mantas and other creatures drawn from tens of thousands of points, each one computed from a few trigonometric formulas. Nothing is pre-rendered; every frame is calculated on the fly, so the creatures swim, breathe and twist without ever repeating exactly.

The creatures were inspired by the parametric "tweet-size" generative art of digital artist @yuruyurau.

No special permissions are required. No ads, no tracking, no network access.

Features

  • Ten creature styles: Koi, Jellyfish, Manta, Coral, Helix, Breathe, Bloom, Trance, Koi II and Nebula

  • Ready-made themes, plus your own theme saved from the current settings

  • Adjustable number of creatures, speed, point count, point size, opacity and zoom

  • Shape frequency and amplitude to morph the creatures

  • Single color, palette or slowly cycling colors; free choice of background and point color

  • Energy saver: pauses after 10 seconds without touch, tap the screen to resume

  • Live preview behind the settings



Setting the wallpaper
Open the app and tap Set Wallpaper, then Set wallpaper in the system preview and choose home screen, lock screen or both. You can also long-press an empty spot on the homescreen and choose Wallpapers → Live wallpapers; some devices do this through the Android Settings app instead.
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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.2.0 (63) suggested Added on Oct 22, 2026

    x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • android.permission.BIND_WALLPAPER
    • studio.coldstream.artificial_koi.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 19 MiB PGP Signature | Build Log

  • Version 1.2.0 (62) - Added on Oct 22, 2026

    arm64-v8a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • android.permission.BIND_WALLPAPER
    • studio.coldstream.artificial_koi.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 18 MiB PGP Signature | Build Log

  • Version 1.2.0 (61) - Added on Oct 22, 2026

    armeabi-v7a

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • android.permission.BIND_WALLPAPER
    • studio.coldstream.artificial_koi.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 15 MiB PGP Signature | Build Log

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