Capo Key Transposer
Chord Finder & Music Theory
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Pick two keys — get your capo fret in one tap. No theory, no math, just music.
Stop guessing where to put your capo. Capo Key Transposer does the math instantly — pick your original key, pick the key you want to sound in, and you get the exact fret to place your capo.
— KEY FEATURES —
• Instant transposer: spin two wheels — original key and target key — and see your capo fret (0–7) the moment you lift a finger. No typing, no calculating.
• Chord shape guide: alongside the fret number, Capo tells you exactly which open chord shapes to play, so you stay in the pocket every time.
• Smart no-solution feedback: if no capo position covers the interval, the app tells you and suggests swapping keys — no dead ends.
• Keys reference — all 24 keys: browse all 12 major and 12 minor keys. Each entry shows the full I–ii–iii–IV–V–vi chord family plus the relative key. Filter by major or minor in one tap.
• Songs list: save any song with its title, original key, capo fret, and sounding key. Eight classic songs — Wonderwall, Blackbird, Hotel California, and more — are pre-loaded to get you started.
• Swipe to delete: managing your song list is as simple as a swipe.
• 100% offline: everything works without a network connection. No account, no login, no ads, no tracking.
Capo Key Transposer is built for guitarists of every level — beginners avoiding barre chords, acoustic players matching a vocalist's range, or songwriters mapping out harmonic ideas on the fly. Open it, spin the wheels, play.
— Capo Key Transposer PREMIUM —
Premium unlocks unlimited saved songs and set lists, the full 24-key chord-family reference, and removes all ads — supporting a completely offline, distraction-free experience for every session.
Subscription options:
• Weekly — $9.99 / week
• Yearly — $49.99 / year (includes a 3-day free trial)
Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the period. Manage or cancel anytime in your Apple Account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://pnkl26.web.app/privacy-policy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Version 1.0
• Transposer: select original key and target key to instantly find the capo fret and open chord shapes to play
• Keys reference: browse all 24 keys (12 major, 12 minor) with I–ii–iii–IV–V–vi chord families and relative key
• Major/minor filter on the Keys screen
• Songs list: save songs with title, original key, capo fret, and sounding key
• Eight classic songs pre-loaded (Wonderwall, Blackbird, Hotel California, and more)
• Fully offline — no account or internet connection required
The developer, Linh Phan Nhat Khanh, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Linh Phan Nhat Khanh
- Size
- 748.5 KB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Capo Key Transposer Yearly $49.99
- Capo Key Transposer Weekly $9.99
- Copyright
- © 2026 PNKL