Key Lens
Alex Amayo Music iPhoneiPadiPod touch
Key Lens is a free Music app for iPhone and iPad by Alex Amayo. Requires iOS 16.4. Updated September 22, 2026.
- Price
- Free
- on the App Store
- Size
- 64 MB
- Age 4+
- Updated
- Sep 22
- 2026 · v1.4
Screenshots
About Key Lens
Start with a scale. Every chord, note, and progression in the app stays locked to the key you pick. Explore common chord progressions or build your own! Extensive options for voicings, inversions, extensions, borrowed chords, alternate bass notes, and more. Learn to play your chord progression on piano! Easy to read, color coded piano diagrams make playing your chords on a real piano easy.
What’s new
Version 1.4 · Updated September 22, 2026
New and improved UI. Decoupled features for a better user experience. Added bass section to remote page with chord follow features.
App privacy
The developer, Alex Amayo, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Key Lens
Looking for apps like Key Lens? Here are 6 similar apps on the App Store. The highest rated is Start Playing (5.0/5), and 5 of the 6 are free to download.
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Start Playing
5.0
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FingerForge
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Noteroom: Piano Note Practice
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Piano ON: Chords & Fingering
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Oh a Chord
5.0
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AumChord
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Key Lens | – | Free | September 22, 2026 | |
| Start Playing | 5.0 / 5 (2) | Free | Feb 23, 2026 | Compare |
| FingerForge | – | Free | Mar 18, 2026 | Compare |
| Noteroom: Piano Note Practice | – | Free | Oct 12, 2026 | Compare |
| Piano ON: Chords & Fingering | – | Free | Oct 5, 2026 | Compare |
| Oh a Chord | 5.0 / 5 (3) | Free | Oct 5, 2026 | Compare |
| AumChord | 5.0 / 5 (1) | 3.99 USD | Oct 12, 2026 | Compare |
Compare Key Lens with the top alternatives: ratings, updates, ASO score and keyword gaps →