# Piano Companion PRO vs StringMaster Pro

The clearest difference is price: StringMaster Pro at $14.99 against Piano Companion PRO's $99.99. Piano Companion PRO's advantage is review sentiment (90% vs 67%) and rating (4.7 vs 4.5). On ads, in-app purchases, monetization model and device support there is nothing between them.

Piano Companion PRO costs $99.99 and StringMaster Pro $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Piano Companion PRO holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Piano Companion PRO has 207 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 90% of Piano Companion PRO's written reviews are positive against 67% of StringMaster Pro's.

Piano Companion PRO ships an update every 6 weeks, StringMaster Pro every 3 months. The most recent releases landed on November 10, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Piano Companion PRO | StringMaster Pro |
| --- | --- | --- |
| Price | $99.99 | **$14.99** |
| Rating | **[4.7 (207 ratings)](https://appshunter.io/ios/app/piano-companion-pro-chords/id586097063/reviews)** | [4.5 (20 ratings)](https://appshunter.io/ios/app/stringmaster-pro/id972426361/reviews) |
| Number of ratings | **207** | 20 |
| Positive reviews | **90.1% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Paid | Paid |
| Size | 154 MB | 171 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPad, Mac |
| Age rating | 9+ | 4+ |
| Developer | [Songtive](https://appshunter.io/developer/865392704) | [Great Apptitude Pty Ltd](https://appshunter.io/developer/1519213669) |

## What reviewers say

### Piano Companion PRO

[App page](https://appshunter.io/ios/app/piano-companion-pro-chords/id586097063)

This music theory app serves as a comprehensive chord and scale dictionary for musicians. It aids in finding chords and scales by inputting keys, offers a chord progression builder, and allows users to create and save custom chords and scales. Practice and explore musical concepts with interactive tools.

**Highlights:** Extensive chord and scale dictionary, Chord progression builder, Custom chord and scale creation, Interactive Circle of Fifths, MIDI keyboard support, Audio playback for chords and scales

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Helpful for learning music theory
- 🚀 Comprehensive chord and scale database
- 💡 Reverse chord and scale lookup
- 👍 Useful for composition and teaching
- 👍 Stable and user-friendly

**What reviewers complain about**

- 🐛 Chord progression feature issues (crashes, freezes, limited functionality)
- 🐛 Sync issues across devices
- 🔋 Battery drain concerns
- 🔍 Cluttered or confusing interface in some areas

**Reported bugs**

- Chord progression feature kicks user out randomly
- MIDI out plays only one note instead of a chord, gets choppy and freezes
- App crashes when accessing certain features (e.g. circle of fifths)

**Requested features**

- Add atonality scale with uncertain root
- Improve chord progression feature (move chords, more customization)
- Implement MIDI out support
- Add dark mode or customizable UI
- Improve stability and reduce crashes


### StringMaster Pro

[App page](https://appshunter.io/ios/app/stringmaster-pro/id972426361)

This advanced music app helps musicians of all levels learn and master fretted instruments. It offers tools for chords, scales, songwriting, and includes a tuner and fretboard learning system. Supports a wide range of instruments and integrates with wireless Fretlight Guitars.

**Highlights:** Chord building and detection, Fretboard learning system, Advanced songwriting tools, Chromatic tuner and metronome, Instrument comparison, MIDI output

**In-app purchases:** none


## Frequently asked questions

### Is Piano Companion PRO free?

Piano Companion PRO costs $99.99, with no in-app purchases.

### Is StringMaster Pro free?

StringMaster Pro costs $14.99, with no in-app purchases.

### Which has better reviews, Piano Companion PRO or StringMaster Pro?

Piano Companion PRO is rated higher. Piano Companion PRO averages 4.7 out of 5 from 207 ratings, while StringMaster Pro averages 4.5 from 20 ratings.

### Do Piano Companion PRO or StringMaster Pro have ads?

Neither Piano Companion PRO nor StringMaster Pro shows ads.

### Which is updated more often, Piano Companion PRO or StringMaster Pro?

Piano Companion PRO ships an update every 6 weeks, and StringMaster Pro every 3 months. Most recently, Piano Companion PRO was updated on November 10, 2026 and StringMaster Pro on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*