Sheet music library, tuner, recorder & live-broadcast โ for Windows & Android.
Capacitor-native Android app. Sheets, tuner, recording, live-broadcast. Mic permission auto-granted. v1.77E: targetSdk lowered to 33 + universal architecture for broader compatibility (Samsung Knox / Z Flip friendly). Min Android 5.1.
โฌ Download APKReal Windows installer EXE. Registers in Add/Remove Programs. Start Menu + Desktop shortcuts.
โฌ Download Installer (93.2 MB) Or: portable ZIP (no install, 93.3 MB)Native Mac app (Electron). Pick the right one for your processor โ Intel or Apple Silicon (M1/M2/M3+). Since I haven't paid for Apple notarization yet, you'll need to right-click โ Open the first time.
โฌ Mac Intel (283 MB) โฌ Mac Apple Silicon (268 MB)No signed IPA yet (Apple App Store distribution requires a $99/year Apple Developer account I haven't bought yet). Source bundle for anyone with a Mac + Xcode 15+ to build & sideload to their own device.
โฌ iOS source bundleInstall unknown apps for your browser/Files (Settings โ Security โ Special access)Have a chord chart PDF in the wrong key? Drop it into the JG transposer โ pick how many semitones to shift, download a transposed PDF. Works on text-based chord charts (lead sheets, chord-over-lyrics). Runs entirely in your browser โ no upload.