HarpBend
NOW ON THE APP STORE
HarpBend
Play. Listen. Perfect.
Your harmonica hears everything — now your phone does too. Real-time pitch detection, scales, chords and progressions for players who want to go further.
FEATURES
Built for how you actually practise.
From your first bend to your first gig.
🎤
Instant Pitch Detection
Play a note. See it light up. Blow, draw, bend — every nuance detected in real time with cents accuracy.
🎼
Scales & Modes
Overlay any scale on the grid. Major, Blues, Dorian, Pentatonic and more — non-scale holes dim automatically.
🎵
Chord Arpeggios
Highlight chord tones on the grid. Tap any cell to hear the reference pitch and work your way through it.
🎹
Chord Progressions
Load a standard or build your own. The transport bar keeps you in sync — beat dots, tempo, scrollable chord strip.
🥁
Metronome & Bass
Click, cowbell or clave. Simple, Rock, Pop, Shuffle or Walking jazz bass behind you.
🎹
Chromatic Mode
Full 12-hole chromatic grid with slide positions. Every note, every key — no bending required.
PRICING
Free to start. Expand when ready.
The core experience is free. Unlock more with individual packs or go all-in with the bundle.
🎼
Scales Pack
11 scales — Pentatonic, Blues, Dorian, Mixolydian, Lydian, Phrygian, Harmonic Minor and more.
$1.99
🎵
Chords Pack
17 chord voicings — dominant, minor, major extensions, diminished, augmented and more.
$1.99
🎸
Bass Patterns Pack
Rock, Pop, Shuffle and Walking jazz bass accompaniment patterns.
$1.99
🎷
Songs Pack
9 blues & jazz standards with live grid tracking.
$2.99
🎹
Chromatic Pack
Full 12-hole chromatic harmonica grid. All 12 notes, all keys.
$2.99
HarpBend Complete
All five packs. One price.
Save ~33% vs buying separately
$7.99
REQUIREMENTS
What you need.
PLATFORM
iPhone & iPad
OS
iOS / iPadOS 16.0 or later
MICROPHONE
Required for pitch detection
INTERNET
Not required — fully offline
IN-APP PURCHASES
Apple ID with payment method
FAQ
Common questions.
The microphone isn’t detecting my notes. What should I do?
Make sure HarpBend has microphone access enabled in Settings → Privacy & Security → Microphone. Aim for a green level on the input meter — too quiet and detection becomes unreliable.
Which harmonica keys are supported?
All 18 standard diatonic keys, from Low D to High G. Tap the key button (top left) to switch instantly.
What’s included for free?
Real-time pitch detection, full diatonic grid (18 keys), Major and Natural Minor scales, Major and Minor chords, 2 progressions (12-Bar Blues & ii–V–I), metronome with click, and the Simple bass pattern.
How do I restore my purchases on a new device?
Open any pack’s paywall and tap Restore purchases at the bottom. All packs will be restored using your Apple ID.
How do I create a custom chord progression?
Tap the chord progression icon → My Progressions → New Progression. Set name, tempo, time signature, then add chords one by one.
How do I read the grid?
Top rows (red) = blow notes. Bottom rows (blue) = draw notes. Bend rows (orange) appear above or below. The active cell lights up in real time as you play.
Need help?
We’re happy to help.