# PROtune: Guitar Tuner & Chords — All String Instruments Tuning

> All String Instruments Tuning (iPhone/iPad app by SilkIdea s.r.o..)

- Source: https://appshunter.io/ios/app/protune-guitar-tuner-and-chords/id6742357391 (this page in markdown: same URL + `.md`)
- Developer: [SilkIdea s.r.o.](https://appshunter.io/developer/413936304)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 61 MB
- Languages: American English, Czech, French (France), German (Germany), Italian, Polish, Brazilian Portuguese, European Spanish, Turkish
- Released: 2025-03-10
- Data updated: 2026-09-07
- User reviews in markdown: https://appshunter.io/ios/app/protune-guitar-tuner-and-chords/id6742357391/reviews.md

## What is PROtune?

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/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| PROtune+ | $9.99 | per year |
| PROtune+ | $1.99 | per month |
| Tuner Subscription | $0.99 | per year |
| Chord Display Subscription | $0.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PROtune+ | $19.99 | one-time |



## Version history (last 5 releases)

### 2.0 — 2026-08-20

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.

### 1.9 — 2026-06-25

* Enjoy more of PROtune for free, with a simpler and clearer purchase structure
* Updated for the latest iOS version
* Minor bug fixes and improvements

### 1.8 — 2026-02-24

Improved string isolation for precise tuning in noisy environments.
Refined stability and accuracy.
Performance and experience improvements.

### 1.7 — 2026-01-28

This update brings a smoother experience and better compatibility:

• Polished UI for a more intuitive and responsive feel
• Full compatibility with iOS 26
• Simplified purchase structure – easier to understand, easier to unlock

Thanks for supporting PROtune and helping us make it better with every release!

### 1.6 — 2026-01-02

Fine-tuned for Ukulele & iOS 26
We’ve fixed a bug affecting ukulele tuning and ensured everything runs smoothly on iOS 26. Thanks for tuning with PROtune!

## Apps similar to PROtune

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [FretBoard: Chords & Scales](https://appshunter.io/ios/app/fretboard-chords-and-scales/id6465688825) | 4.3 (4) | Free | Music |
| [StringPilot](https://appshunter.io/ios/app/stringpilot/id6759282296) | — | Free | Music |
| [XTuner PRO](https://appshunter.io/ios/app/xtuner-pro/id6743440995) | — | Free | Music |
| [Piano Vista](https://appshunter.io/ios/app/piano-vista/id6468502856) | 2.0 (1) | Free | Music |
| [PROTUNE](https://appshunter.io/ios/app/protune/id6758762425) | 5.0 (3) | Free | Music |
| [Video to MP3 Converter - Dlaud](https://appshunter.io/ios/app/video-to-mp3-converter-dlaud/id6756181923) | 4.5 (15) | Free | Music |

## More apps by SilkIdea s.r.o.

- [coolAltitude](https://appshunter.io/ios/app/coolaltitude/id641533221)
- [handyREADER: Audiobook & eBook](https://appshunter.io/ios/app/handyreader-audiobook-and-ebook/id1558525064)

All apps by SilkIdea s.r.o.: https://appshunter.io/developer/413936304

## Related topics

[otune](https://appshunter.io/ios/topics/otune)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*