Install Tellnova

Download the latest build from the Tellnova releases page. Choose the artifact for your operating system and CPU architecture.

macOS

1. Open the DMG and drag Tellnova into Applications.
2. Open Terminal.
3. Run the following command once:

xattr -cr /Applications/Tellnova.app

4. Launch Tellnova from Applications.

Tellnova is currently distributed without Apple notarization. The xattr command removes the quarantine attribute attached by the browser; it does not re-sign or otherwise modify the app.

Do not run codesign

Do not run codesign --force --deep --sign - on the installed app. Re-signing it locally changes its updater identity and can prevent future updates from installing.

If you prefer not to use Terminal, try opening Tellnova once, then go to System Settings → Privacy & Security and choose Open Anyway if macOS offers the option.

Windows

Download the .exe installer, open it, and follow the setup wizard. Windows SmartScreen may warn about an unsigned application. Confirm that the publisher and download source are the expected Tellnova release before continuing.

Tellnova uses Git for repository operations. If Git is missing, install Git for Windows, then quit and reopen Tellnova so the updated PATH is detected.

Linux

Download either the AppImage or archive for your architecture. To run an AppImage:

chmod +x Tellnova-*.AppImage
./Tellnova-*.AppImage

Sign in

Launch Tellnova and choose Continue with GitHub. GitHub access identifies your account and lets Tellnova show repositories you can use. Private repositories require the requested repository permission.