PROtune: Guitar Tuner & Chords
All String Instruments Tuning
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
PROtune combines a precision instrument tuner, machine-learning-powered chord detection, and a tuning-aware chord library in one app for string musicians.
Tune individual strings—even in noisy environments—identify chords as you play, or explore playable chord shapes adapted to your instrument and tuning.
PRECISION TUNING
• Achieve accuracy of up to 0.135 Hz—approximately 0.5 cent at A4 = 440 Hz
• Isolate individual strings with Focus Mode for reliable tuning in noisy environments
• Get responsive real-time pitch detection with minimal latency
• Benefit from instrument-specific filtering, microphone calibration, dynamic input adjustment, and harmonic suppression
• Set your preferred reference pitch instead of being limited to A4 = 440 Hz
MACHINE-LEARNING CHORD DETECTION
• Play a chord and see PROtune identify it from your microphone input
• View the detected notes and note spectrum behind the result
• Follow your chord history while playing
• Set a capo position to display detected chords as the shapes you are actually playing
• Clear the history with New Song whenever you begin a new progression
STRING INSTRUMENTS & ALTERNATE TUNINGS
PROtune supports a wide range of string instruments, including guitar, bass, ukulele, banjo, mandolin, violin, viola, cello, double bass, bouzouki, lute, dulcimer, and cittern.
Choose from standard and alternate tunings such as Drop D, Half Step Down, Full Step Down, Open D, Open G, DADGAD, Low G, and more.
TUNING-AWARE CHORD SHAPES
• Explore multiple playable positions for each chord
• Generate chord shapes adapted to the selected instrument and tuning
• Find options across different areas of the fretboard
• Use playability assessment that considers finger placement and hand ergonomics
• Explore major, minor, seventh, diminished, augmented, suspended, and extended chords
Whether you are tuning before a performance, identifying a progression, experimenting with alternate tunings, or searching for a new chord shape, PROtune gives you the tools in one focused workspace.
Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
PROtune 2.0 introduces machine-learning-powered chord detection.
• Play a chord and see it recognized from your microphone input
• View the detected notes and follow your chord history as you play
• Set a capo position to display the chord shapes you are actually playing
• Start a new song to clear the history and capture a fresh progression
• Enjoy further tuning, stability, and performance improvements
Tune individual strings, recognize chords, and explore playable chord shapes—all in one app.
The developer, SilkIdea s.r.o., 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
- Provider
- SilkIdea s.r.o.
- Size
- 64.2 MB
- Category
- Music
- Compatibility
Requires iOS 15.6 or later.
- iPhone
Requires iOS 15.6 or later. - iPad
Requires iPadOS 15.6 or later. - iPod touch
Requires iOS 15.6 or later. - Mac
Requires macOS 12.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 8 more
- English, Czech, French, German, Italian, Polish, Portuguese, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- PROtune+ USD 1.99
- PROtune+ USD 22.99
- PROtune+ USD 11.99
- Copyright
- © 2025 SilkIdea s.r.o.