Watch videos together, in sync. An unofficial Syncplay client for Android & iOS.
The "k" stands for Kotlin.
| Recommended | Alternative | Store | |
|---|---|---|---|
| Android |
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| iOS |
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Notes on downloads
- Android (GitHub): Each release ships per-ABI APKs plus a
universalone. Most modern phones wantarm64-v8a; pickuniversalif unsure. GitHub releases are recommended over the Play Store, which can lag behind. - Android (IzzyOnDroid): A lightweight APK built from the
exoOnlyflavor, so it carries only the ExoPlayer engine (no bundled mpv/VLC native libraries). Package idcom.reddnek.syncplay. - iOS: The "Download IPA" button always points to the latest release. No App Store access? See the iOS sideloading guide for AltStore and other methods (jailbroken and non-jailbroken).
- Full Syncplay compatibility. Connects to the same servers and works seamlessly alongside the official PC client.
- Protocol rewritten from Python to Kotlin, covering every core feature.
- mpv on both platforms. libmpv powers playback on Android and, since v0.22.2, on iOS too.
- Multiple video engines. Switch player at runtime to suit your device and format.
- Real-time chat with emoji and inline GIFs.
- Shared playlists for sequential group viewing.
- TLS encryption for secure connections.
- Picture-in-Picture mode.
- Managed rooms and a readiness system.
- Highly customizable. Deep settings for UI, playback, gestures, haptics, and more.
- Built-in server. Host a room straight from the app, no PC required.
- Multi-language support via community translations.
| Feature | Android | iOS |
|---|---|---|
| Chat | ✔ | ✔ |
| Managed Rooms | ✔ | ✔ |
| Shared Playlists | ✔ | ✔ |
| TLS | ✔ (Netty) | ✔ (SwiftNIO) |
| Picture-in-Picture | ✔ | ✔ (AVPlayer only) |
| Built-in Server | ✔ | ✔ |
| Saved Shortcuts | ✔ | ✔ |
Android
| Engine | Default | Formats | Subtitles | Chapters | Notes |
|---|---|---|---|---|---|
| mpv (libmpv) | ✔ (full build) | Broad, incl. HEVC / mkv | Best (libass) | ✔ | Recommended |
| ExoPlayer (Media3) | ✔ (lite build) | Device codecs | Basic | ✗ | Lightweight, ships in the IzzyOnDroid build |
| VLC (libVLC) | All formats | ✔ | ✔ | Experimental |
iOS
| Engine | Default | Formats | Subtitles | Chapters | Notes |
|---|---|---|---|---|---|
| MPVKit (libmpv) | ✔ | Broad, incl. HEVC / mkv | Best (libass) | ✔ | New in v0.22.2, recommended |
| VLCKit (MobileVLCKit) | All formats | ✔ | ✔ | ||
| AVPlayer (AVFoundation) | Device codecs | ✗ | ✗ | Experimental, native Apple player |
Built with Kotlin Multiplatform and Compose Multiplatform: one shared codebase for Android and iOS.
| Layer | Technology |
|---|---|
| UI | Compose Multiplatform |
| Networking | Netty (Android) · SwiftNIO (iOS) · Ktor (shared fallback) |
| Android players | mpv (libmpv) · ExoPlayer (Media3) · VLC (libVLC) |
| iOS players | MPVKit (libmpv) · VLCKit (MobileVLCKit) · AVPlayer (AVFoundation) |
Can I watch with friends who use Syncplay on PC?
Yes. Synkplay speaks the same protocol, connects to the same servers, and supports the same core features.
Android says "App not installed" when updating?
Uninstall the previous version first, then install the new APK. This usually means the signing key or ABI differs from what you had.
I don't have access to the iOS App Store.
Sideload via AltStore (non-jailbroken) or install the
.ipadirectly (jailbroken).
Which iOS engine should I pick?
MPVKit is the default and handles the widest range of formats and subtitles. VLCKit is a solid fallback. AVPlayer is native but limited (no external subtitles or chapters).
Contributions welcome! Click the badge above to add or improve translations on Weblate.
Thanks to @Zhaodaidai (Chinese), @DoncanC (Spanish), and @ivy-reps (Russian) for their translations.
Requirements: Android Studio 2025.3.1+ (and Xcode 16.3+ for iOS).
Clone the repo and open it in Android Studio. No extra configuration needed for the Android build.
- Official Syncplay for maintaining such remarkable software
- Et0h for his work on official Syncplay and help in our issue tracker
- soredake for thorough testing
- Osanosa for valuable contributions
- Everyone who contributed translations
Open an issue for bugs or feature requests, or start a discussion for general questions.
Licensed under AGPL-3.0
