# Polly vs EchoSketch

The clearest difference is price: Polly at $0.99 against EchoSketch's $7.99. EchoSketch's advantage is update cadence (every 2 days vs every 9 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Polly costs $0.99 and EchoSketch $7.99 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 — 5.0 for Polly against 5.0 for EchoSketch. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Polly ships an update every 9 months, EchoSketch every 2 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Polly | EchoSketch |
| --- | --- | --- |
| Price | **$0.99** | $7.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/polly-polyrhythmic-metronome/id1582544037/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/echosketch-performance-delay/id6794466741/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 days** |
| Monetization | Paid | Paid |
| Size | 5 MB | 5 MB |
| Requires iOS | **16.0** | 17 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [591 Group Ltd.](https://appshunter.io/developer/1582544039) | [Avi Bortnick](https://appshunter.io/developer/421929037) |

## What reviewers say

### 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


### EchoSketch

[App page](https://appshunter.io/ios/app/echosketch-performance-delay/id6794466741)

Shape delay and reverb effects in real-time with a playable X/Y performance surface. Explore four distinct delay types and multiple reverb options, with extensive parameter control for unique sound morphing. Works as a standalone app or an Audio Unit plugin.

**Highlights:** X/Y performance surface for real-time sound shaping, Four distinct delay types: digital, analog, reverse, ping-pong, Spring, plate, and hall convolution reverb, Modulation and tone control for echoes, HOLD, LIFT, FREEZE, and MOTION performance gestures, Standalone app and AUv3 plugin compatibility

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Polly free?

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

### Is EchoSketch free?

EchoSketch costs $7.99, with no in-app purchases.

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

Polly and EchoSketch are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Polly or EchoSketch have ads?

Neither Polly nor EchoSketch shows ads.

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

Polly ships an update every 9 months, and EchoSketch every 2 days. Most recently, Polly was updated on October 16, 2026 and EchoSketch on October 14, 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.*