# Holon vs Polly

The clearest difference is price: Holon at Free against Polly's $0.99. Holon also leads on update cadence (every 3 months vs every 9 months) and ratings volume (14 vs 2). Polly's advantage is rating (5.0 vs 4.5) and in-app purchases (none vs 2). On ads and monetization model there is nothing between them.

Holon is free to download; Polly costs $0.99 up front. Holon sells 2 one-off in-app purchases. Polly asks for nothing beyond the download.

Polly holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Holon has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 75% of Holon's written reviews are positive against 100% of Polly's.

Holon ships an update every 3 months, Polly every 9 months. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Holon | Polly |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.5 (14 ratings)](https://appshunter.io/ios/app/holon/id1352687747/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/polly-polyrhythmic-metronome/id1582544037/reviews)** |
| Number of ratings | **14** | 2 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Paid | Paid |
| Size | 144 MB | 5 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Holonic Systems Oy](https://appshunter.io/developer/1172474856) | [591 Group Ltd.](https://appshunter.io/developer/1582544039) |

## What reviewers say

### Holon

[App page](https://appshunter.io/ios/app/holon/id1352687747)

This app transforms your movement through cities into a dynamic, real-time musical score. It uses your physical location and activity to generate interactive synth music, encouraging outdoor exploration and turning listeners into performers.

**Highlights:** Human-powered music generation, Encourages outdoor activity, Zero UI for minimal distraction, Environmentally responsive music, Real-time synth music creation, Optional AirPods and Apple Watch integration

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Apple Watch support | Free | one-time |
| Movesense Support | Free | one-time |


### Polly

[App page](https://appshunter.io/ios/app/polly-polyrhythmic-metronome/id1582544037)

Explore complex rhythms with a versatile metronome app. It offers five tracks for accents, subdivisions, polyrhythms, and hypertuplets, with options to mute tracks for customized assistance. Designed for accessibility, it supports VoiceOver and offers stereo or mono audio.

**Highlights:** Polyrhythm exploration, Five customizable tracks, Accent and subdivision support, VoiceOver compatibility, Background audio playback, MIDI output for DAWs

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

**In-app purchases:** none


## Frequently asked questions

### Is Holon free?

Holon is free to download, with in-app purchases available.

### Is Polly free?

Polly costs $0.99, with no in-app purchases.

### Which has better reviews, Holon or Polly?

Polly is rated higher. Holon averages 4.5 out of 5 from 14 ratings, while Polly averages 5.0 from 2 ratings.

### Do Holon or Polly have ads?

Neither Holon nor Polly shows ads.

### Which is updated more often, Holon or Polly?

Holon ships an update every 3 months, and Polly every 9 months. Most recently, Holon was updated on October 19, 2026 and Polly on October 24, 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.*