# PolyHarp vs Harmony Bloom

The clearest difference is price: PolyHarp at $4.99 against Harmony Bloom's $9.99. PolyHarp also leads on review sentiment (100% vs 78%). On rating, ratings volume, update cadence and ads there is nothing between them.

PolyHarp costs $4.99 and Harmony Bloom $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for PolyHarp against 4.9 for Harmony Bloom. Both are backed by a comparable volume of ratings — 11 and 28 respectively. Written reviews are what separate them: 100% of PolyHarp's written reviews are positive against 78% of Harmony Bloom's.

PolyHarp ships an update every 4 weeks, Harmony Bloom monthly. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | PolyHarp | Harmony Bloom |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/polyharp/id961772600/reviews)** | [4.9 (28 ratings)](https://appshunter.io/ios/app/harmony-bloom/id6480587217/reviews) |
| Number of ratings | 11 | **28** |
| Positive reviews | **100.0% of reviews** | 78.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | Paid | Paid |
| Size | 16 MB | 35 MB |
| Requires iOS | 12.4 | **12.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Henry Lowengard](https://appshunter.io/developer/288419654) | [MNR Development LLC](https://appshunter.io/developer/1739548023) |

## What reviewers say

### PolyHarp

[App page](https://appshunter.io/ios/app/polyharp/id961772600)

This app offers a virtual musical instrument inspired by chorded zithers, featuring extensive chord customization, multi-string capabilities, and massive polyphony. It serves as a platform for harmonic theory exploration and a powerful MIDI controller, with numerous presets and the ability to create unique instruments.

**Highlights:** Extensive chord customization, Multi-string and polyphony support, Harmonic theory testbed, MIDI controller functionality, Large preset library, Audiobus 3 and IAA support

**In-app purchases:** none


### Harmony Bloom

[App page](https://appshunter.io/ios/app/harmony-bloom/id6480587217)

This app generates MIDI data with polyrhythmic patterns and accompanying visuals. It offers extensive control over musical sequences, including scale selection and randomization, and allows for audio generation in its standalone version. MIDI capture and export features facilitate integration into digital audio workstations.

**Highlights:** Polyrhythmic MIDI generation, Visualizer for note patterns, Standalone audio generation, Scale Selector with 57 options, MIDI Capture and Export, Preset management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PolyHarp free?

PolyHarp costs $4.99, with no in-app purchases.

### Is Harmony Bloom free?

Harmony Bloom costs $9.99, with no in-app purchases.

### Which has better reviews, PolyHarp or Harmony Bloom?

PolyHarp is rated higher. PolyHarp averages 4.9 out of 5 from 11 ratings, while Harmony Bloom averages 4.9 from 28 ratings.

### Do PolyHarp or Harmony Bloom have ads?

Neither PolyHarp nor Harmony Bloom shows ads.

### Which is updated more often, PolyHarp or Harmony Bloom?

PolyHarp ships an update every 4 weeks, and Harmony Bloom monthly. Most recently, PolyHarp was updated on September 30, 2026 and Harmony Bloom on October 12, 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.*