MIDI Aid vs Chord Randomizer
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
MIDI Aid
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MIDI Aid is a MIDI monitor: connect your MIDI devices and see every incoming event in one clean, technical view. Whether you are debugging a synth patch, checking a controller mapping, or just curious what your gear is sending, MIDI Aid shows you what is really happening on the wire. CAPTURE ⢠Live event log with precise timestamps ⢠Start, pause, and resume capturing at any time ⢠Clear the log with one tap ⢠Follow mode keeps the newest events in view UNDERSTAND ⢠Every event decoded into plain language: notes with names and velocities, controllers with their standard names, program changes, aftertouch, pitch wheel, and more ⢠Raw status and data bytes side by side with the decoded event ⢠Hex or decimal display, your choice ⢠Tap any event for a detail view including the full raw bytes FILTER ⢠Focus on what matters: filter by device, event type, and MIDI channel ⢠Channel events, system common events, and system real time events can be toggled individually ⢠Mute noisy events like Timing Clock or Active Sensing with one tap DEVICES ⢠Works with USB MIDI devices out of the box ⢠Network MIDI sessions and Bluetooth MIDI devices set up at system level appear automatically MIDI Aid supports all 16 MIDI channels, running status, and System Exclusive messages. No account, no ads, no tracking. Your MIDI data never leaves your device.
Chord Randomizer
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Chord Randomizer is a powerful music theory practice tool from Nathaniel School of Music. Whether you're a beginner just learning your triads or an advanced musician drilling diatonic progressions, Chord Randomizer keeps your practice sessions fresh and effective. FEATURES - Randomised chord progressions so you never practice the same sequence twice - Three skill levels: Beginner, Intermediate, and Diatonic - Live audio playback with realistic instrument sounds: piano, guitar, harp, and cello - Arpeggio and block-chord playback modes, each with independent volume - Built-in metronome with configurable BPM from 40 to 240 - Playback speed multiplier: 1x, 1.5x, and 2x - Chord rate control: change chords every beat, every bar, or every two bars - Loop mode for continuous practice - MIDI export for use in any DAW - PNG export to share a clean chord chart with students or bandmates - Dark, professional UI optimised for practice sessions PERFECT FOR - Music students building chord recognition - Teachers generating practice exercises - Songwriters and composers exploring new progressions - Guitarists, pianists, and keyboardists of all levels Chord Randomizer runs entirely on-device. No account is needed, and no data is collected.
Screenshots
Verdict
The clearest difference is price: Chord Randomizer at Free against MIDI Aid's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Chord Randomizer is free to download; MIDI Aid costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MIDI Aid | Chord Randomizer |
|---|---|---|
| Price | $0.99 | Free ā better |
| Update frequency | Every 35 months | ā |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.0 ā better |
| Further details ā not scored | ||
| Size | 26 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Tobias Wissmueller | Jason Zachariah |
In-app purchases
MIDI Aid
No in-app purchases
Chord Randomizer
No in-app purchases
Questions
Is MIDI Aid free?
Is Chord Randomizer free?
Do MIDI Aid or Chord Randomizer have ads?
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