GuitarPT

Practice your next favorite song at half speed, bar by bar. GuitarPT turns any track into your personal practice room. Load an MP3, M4A or video file, and GuitarPT automatically detects BPM and chords — entirely on-device, no server, no internet required. Set markers, define loop sections, drop the tempo to 50%, transpose without pitch artifacts. Once the part sits, kick the speed back up. No setup, no fuss. Need a chord chart? Build a leadsheet in the built-in editor using a gesture-driven circle-of-fifths key picker, a smart chord palette and a clean section layout. Play it back with piano, bass and drums across 8 styles — rock, jazz swing, bossa nova, funk and more. Or snap a photo of a handwritten chart and have it digitised via OCR. On stage? Performance mode shows large chord displays with live highlighting of the current chord. Multiple devices? With iCloud sync your songs, markers, leadsheets and setlists are everywhere — iPhone, iPad, all in sync. PLAYER • Audio and video player with an interactive waveform • Time-stretching from 25% to 150% — without pitch artifacts • Pitch shifting of ±12 semitones, independent of tempo • One-touch marker grab and drag • Up to 3 loop sections per song CHORD ANALYSIS (fully offline) • Automatic BPM and chord detection with 145 chord types • Slash chord detection (Am/C, G/B …) • Confidence indicator per chord • Enharmonic notation based on key (Ab instead of G#) • Re-analyze with a single tap LEADSHEET CREATOR • Circle-of-fifths key picker with swipe gesture • Section structure (Intro, Verse, Chorus, Bridge, Solo, Outro) • Playback with piano, bass and drums across 8 styles • Performance mode with a large chord display • Photo import via OCR (OpenAI Vision) • Export/import as .guitarpt.json or .zip LIBRARY • Songs, leadsheets, projects and setlists • Song-leadsheet linking • Recording with live waveform • Band-folder import from shared iCloud folders • Search, sorting and drag-to-reorder iCLOUD SYNC • Songs, markers, loops, leadsheets, setlists and photos automatically synced • Audio, video and image files via iCloud Drive • Download-on-demand • Sync log and storage overview in Settings PRIVACY All audio analysis runs on your device. No account required, no trackers, no data sent anywhere. The OpenAI API key is optional and only used for the photo import. Available in English and German. --- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://guitarpt.app/datenschutz.html The Pro subscription (6.99 EUR/month) auto-renews at the end of each billing period unless cancelled at least 24 hours before in App Store settings. Manage subscriptions: https://apps.apple.com/account/subscriptions