Music Analysis & Audio-to-MIDI
We tested and ranked all 6 Music Analysis & Audio-to-MIDI apps for Mac — updated August 2026.
Every app here was run on our own Apple-silicon Macs and scored on the published rubric — capability, craft, privacy, value. We watch the network while we test. How we rank →
You have a recording — a piano riff, a guitar solo, a full track — and you need it as MIDI or notation you can actually edit. Maybe you want to pull chords from a song, transcribe your own playing into sheet music, or drop cue points into a DJ set. The apps in this category run audio analysis and pitch detection locally on your Mac, so your recordings stay on your machine: everything stays on your hardware unless you explicitly decide to share it. We judged 6 Mac apps on capability, craft, privacy, and value. Below is how they stack up for turning sound into data musicians can use.
The ranking — all 6
Piano Transcriptionist
Weida FanThe complete audio-to-sheet-music pipeline for piano — optimized on-device ML converts recordings into expressive MIDI capturing timing, dynamics, and pedal, then engraves an editable, printable score you can export as PDF. Free, no account, and fully local.
” highly-optimized on-device machine learning... All processing happens locally. Your recordings and MIDI never leave your device — test note
ChordNatic
Vijaya Ganesh MohanA genuinely novel bridge between Carnatic raga detection and Western chord voicings, running real-time on-device analysis. Free forever, nothing leaves the device.
” Its on-device AI identifies the raga in real time; Nothing leaves your phone — test note
Guitar Composer
I-Witness LTDThe strongest audio-to-tab option: polyphonic guitar transcription to editable tablature with an offline theory-aware AI assistant, exporting to MusicXML, Guitar Pro, and PDF.
” Guitar Composer uses on-device AI to turn your playing into accurate guitar tablature. No internet required; All recording, transcription, and AI processing happens on your Mac — test note
Audiophilio
Ryan KatsanesA deep acoustic measurement and room-tuning toolkit rather than a music transcription app. Its AI is a minor diagnostic layer using Apple Intelligence on supported devices.
” On Apple Intelligence devices (iOS 26+), on-device AI goes deeper — privately, without sending your data anywhere — test note
CuePoints DJ
SORIN NAEA focused tool that analyzes track structure and writes cue points directly into Serato, djay, and Virtual DJ files — a real time-saver for DJs, fully local.
” 100% local processing. CuePoints DJ never uploads your music ... Everything happens on your Mac — test note
Chordpeek
Robert CorbinA small, honest, fully on-device guitar chord recognizer showing name, confidence, notes, and fingering diagrams. Clean and free, but deliberately minimal — limited to common open chords with no export.
” Audio is processed on device. Chordpeek does not record, store, transmit, or upload audio; maps detected notes against its local chord library. — test note
How to choose Music Analysis & Audio-to-MIDI for Mac
Start with what you play. Piano Transcriptionist is purpose-built for solo piano and delivers a full audio-to-MIDI-to-sheet-music pipeline for free. Guitarists should look at Guitar Composer for polyphonic tablature transcription with an offline theory assistant, or Chordpeek for quick open-chord identification. If you work across Carnatic and Western traditions, ChordNatic is the only app here that bridges raga detection to Western chord voicings. DJs analyzing track structure for cue points have one option: CuePoints DJ, which writes directly into Serato, djay, and Virtual DJ files. For room acoustics rather than music transcription, Audiophilio is a deep measurement toolkit, though its AI role is limited. On price: four apps are free to download (Piano Transcriptionist, ChordNatic, Audiophilio, Chordpeek), while Guitar Composer ($24.99) and CuePoints DJ ($19.99) are one-time purchases with no subscriptions. Every app here processes audio on-device, so privacy is strong across the board — the differentiator is really what instrument and workflow each app targets.
Questions people ask
How do I turn audio into MIDI on a Mac without uploading my recordings?
Piano Transcriptionist converts piano recordings into expressive MIDI entirely on-device, capturing velocity, note length, and sustain pedal, then engraves an editable score you can export as PDF. For guitar, Guitar Composer does polyphonic transcription to tablature offline. Both process everything locally — your audio never leaves your Mac.
How do I convert an audio sample to MIDI notes for free?
Piano Transcriptionist is free with no account required and handles the full pipeline from audio to editable MIDI to printable sheet music. ChordNatic and Chordpeek are also free, though they focus on chord recognition rather than full MIDI transcription. All three run on-device with no tracking.
Can an app detect chords from a recording on my Mac?
Chordpeek listens via your mic and identifies guitar chords in real time, showing chord name, confidence, and fingering diagrams. ChordNatic goes further by detecting Carnatic ragas and mapping them to Western chord voicings. Both process audio on-device with nothing stored or uploaded.