# Polyrhythm vs e

The clearest difference is price: e at Free against Polyrhythm's $4.99. e also leads on update cadence (every 2 months vs every 31 months). Polyrhythm's advantage is chart position (#195 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

e is free to download; Polyrhythm costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Polyrhythm ships an update every 31 months, e every 2 months. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Polyrhythm | e |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.9 (64 ratings)](https://appshunter.io/ios/app/polyrhythm-poly-metronome/id1522128691/reviews)** | — |
| Number of ratings | **64** | — |
| Positive reviews | 95.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 2 months** |
| Monetization | Paid | — |
| Best chart rank | **#195** | — |
| Size | 1 MB | 23 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Autumn Rock Software Development](https://appshunter.io/developer/1486640548) | [Erda](https://appshunter.io/developer/1587686032) |

## What reviewers say

### Polyrhythm

[App page](https://appshunter.io/ios/app/polyrhythm-poly-metronome/id1522128691)

**Currently charting:** #195 Top Paid · Music (US App Store)

Master complex rhythms with this intuitive trainer. Visualize and practice polyrhythms by toggling beats, adjusting volumes, and setting tempo. Offers a variety of sounds for a personalized practice experience.

**Highlights:** Create and visualize polyrhythms, Toggle individual beats, Variety of sound options, Independent rhythm volume control, TAP tempo setting

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

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-tuner/id1587686030)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polyrhythm free?

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

### Is e free?

e is free to download, with no in-app purchases.

### Do Polyrhythm or e have ads?

Neither Polyrhythm nor e shows ads.

### Which is updated more often, Polyrhythm or e?

Polyrhythm ships an update every 31 months, and e every 2 months. Most recently, Polyrhythm was updated on October 14, 2026 and e on September 29, 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.*