KeyMorph vs Midi Hub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeyMorph
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KeyMorph is the ultimate practice companion for anyone playing a transposing instrument. With a full‑sized, touch‑responsive piano keyboard and a simple dropdown menu, you can choose an available instrument and immediately see the adjusted note names rendered atop each key—no mental math required. KeyMorph helps you: Visualize transposition in real time, so you always know which piano key corresponds to your instrument’s written pitch. Switch instruments effortlessly—great for multi‑instrumentalists or band directors working with different sections. Build confidence by practicing scales, chords, and melodies in their concert‑pitch form while seeing exactly what to play on your instrument. Ideal for students, educators, and professionals alike, KeyMorph makes learning and performing transposed music intuitive, accurate, and fun. Instruments Supported: Piano Violin Oboe Alto Saxophone Soprano Saxophone Tenor Saxophone Baritone Saxophone Trumpet French Horn Clarinet More instruments to come!
Midi Hub
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MIDI Hub brings MIDI discovery, playback, practice, recording, and personal library management together in one place. Key features: • Search and preview public MIDI songs • Save favorites and review recent practice • Practice with waterfall, staff, or numbered notation • See the next keys highlighted in real time • Practice left and right hands separately • Listen to humanized demonstration playback • Connect a MIDI keyboard for interactive practice • Record, upload, and manage your own MIDI files • Share songs through links that anyone can preview • Adjust practice tempo and key Some features require an account, a compatible MIDI device, and an internet connection.
Screenshots
Verdict
The clearest difference is in-app purchases: KeyMorph at none against Midi Hub's 1. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Midi Hub sells 1 one-off in-app purchase. KeyMorph asks for nothing beyond the download.
| Parameter | KeyMorph | Midi Hub |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Omni Devs | 晨 黄 |
In-app purchases
KeyMorph
No in-app purchases
Midi Hub
- 100 Points$19.99









