Install Ryntra on your device.

1. Open the Ryntra download page on your Android device and tap Download APK.
2. Open the downloaded file from the notification shade or the Files app.
3. If Android asks, allow your browser or file manager to install unknown apps.
4. Tap Install, open Ryntra and sign in with your Modrinth account.

Ryntra is not on Google Play. The APK is published on GitHub Releases, and the app tells you when a newer one is available.

1. Install Sideloadly on your computer. On Windows, also install iTunes and iCloud from apple.com rather than the Microsoft Store.
2. Download the unsigned IPA from the Ryntra download page.
3. Connect your iPhone or iPad with a cable and tap Trust on the device if asked.
4. Drop the IPA into Sideloadly, enter your Apple ID and start the install.
5. On the device, open Settings › General › VPN & Device Management and trust the profile for your Apple ID.
6. If iOS asks for Developer Mode, turn it on in Settings › Privacy & Security, restart and confirm.

Apps signed with a free Apple ID expire after 7 days. Reconnect and reinstall with Sideloadly to refresh them; a paid developer account lasts a year.

1. Use the same unsigned IPA as iPhone and iPad.
2. Sideload it with Sideloadly the same way you would for an iPad.
3. Ryntra runs in Designed for iPad compatibility mode; there is no separate visionOS build.

1. Download the DMG from the Ryntra download page.
2. Open the disk image and drag Ryntra into Applications.
3. Launch Ryntra. If macOS blocks the unsigned build, Control-click the app and choose Open.
4. On macOS 15 and later, use System Settings › Privacy & Security › Open Anyway instead.

Intel Macs are not supported.