# B Flat vs PentaMonochord

The clearest difference is rating: PentaMonochord at 5.0 against B Flat's 4.5. PentaMonochord also leads on price ($1.99 vs $2.99). B Flat's advantage is update cadence (every 5 months vs every 24 months) and device support (5 vs 3). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

B Flat costs $2.99 and PentaMonochord $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PentaMonochord holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

B Flat ships an update every 5 months, PentaMonochord every 24 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | B Flat | PentaMonochord |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/b-flat-sight-reading/id999375757/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pentamonochord/id1582880506/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 80.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 24 months |
| Monetization | Paid | Paid |
| Size | 58 MB | 12 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch** | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [MAMP GmbH](https://appshunter.io/developer/1451068672) | [Lucy Hudson](https://appshunter.io/developer/1179157812) |

## What reviewers say

### B Flat

[App page](https://appshunter.io/ios/app/b-flat-sight-reading/id999375757)

Improve your music sheet reading skills with this app. It offers tailored exercises for beginners and advanced users, focusing on speed and accuracy. Track your progress with detailed statistics and enjoy a stress-free learning environment.

**Highlights:** Beginner and professional support, Treble and bass clef support, Misread notes displayed more often, Solomisation support, No time limit, Sound generator with SoundFonts, Extensive statistics

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### PentaMonochord

[App page](https://appshunter.io/ios/app/pentamonochord/id1582880506)

Explore the relationship between pitch and string length with a digital monochord. Build scales, hear intervals, and learn about Pythagorean music theory through interactive blocks and historical context.

**Highlights:** Build two-octave G pentatonic scales, Hear and see interval relationships, View Hertz frequencies and string lengths, Play pentatonic tunes, Scale-building game mode, Background information on monochord system, Historical timeline

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

**In-app purchases:** none


## Frequently asked questions

### Is B Flat free?

B Flat costs $2.99, with no in-app purchases.

### Is PentaMonochord free?

PentaMonochord costs $1.99, with no in-app purchases.

### Which has better reviews, B Flat or PentaMonochord?

PentaMonochord is rated higher. B Flat averages 4.5 out of 5 from 2 ratings, while PentaMonochord averages 5.0 from 1 ratings.

### Do B Flat or PentaMonochord have ads?

Neither B Flat nor PentaMonochord shows ads.

### Which is updated more often, B Flat or PentaMonochord?

B Flat ships an update every 5 months, and PentaMonochord every 24 months. Most recently, B Flat was updated on November 3, 2026 and PentaMonochord on November 3, 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.*