Hum2MIDI

Hum2MIDI — App Overview
In one line
Just hum, and your melody is converted to MIDI — ready to edit and export.
Overview
Hum2MIDI detects pitch from your microphone in real time and converts it into MIDI notes. Even if you can't play an instrument, you can capture any melody that pops into your head as musical data (MIDI), edit it on a piano roll, and export or share it as a standard MIDI file. Perfect for brainstorming composition ideas and getting something into your DAW fast.
Features
Input & Detection

Real-time pitch detection via microphone (AudioKit) → converted to MIDI notes
Live pitch display while active: note name, frequency, tuning meter, pitch graph

Recording & Playback

Recorded notes displayed on a piano roll (note names, beat/bar grid, fixed pitch axis)
Piano-sound preview playback
Metronome: tempo (manual input), time signature (2/3/4/6), volume, mute

Editing

Add, move, resize, and delete notes
Long-press focus editing (zoom + haptic feedback, simultaneous pitch & start-time adjustment, guide tone)
Undo/redo, snap to melody start, quantize (1/4, 1/8, 1/16)

Saving & Export

Save multiple recordings (renameable), re-edit anytime
Export as MIDI and share to a DAW or other app via the share sheet

Other

Japanese/English language toggle (selected on first launch + available in Settings)

Pricing (one-time purchase)

Free: Detection, display, recording, playback, editing, metronome — up to 3 saved recordings
Pro (one-time purchase): MIDI export & sharing, unlimited saved recordings

Target Users

Composers and producers who want to capture ideas quickly
Non-instrumentalists who want to preserve melodies they think of
Vocalists who want to convert vocal/harmony lines into MIDI as a foundation for production

Workflow
Record → Hum → Stop → Review & edit on piano roll → Save → Export MIDI → Drop into your DAW.