# Oktopus Synthesizer vs EchoSketch

The clearest difference is rating: EchoSketch at 5.0 against Oktopus Synthesizer's 4.8. EchoSketch also leads on update cadence (every 2 days vs every 5 days). Oktopus Synthesizer's advantage is price ($4.99 vs $7.99) and ratings volume (12 vs 2). On ads, in-app purchases, monetization model and device support there is nothing between them.

Oktopus Synthesizer costs $4.99 and EchoSketch $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EchoSketch holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Oktopus Synthesizer has 12 ratings behind it against 2, so its average is the more settled of the two.

Oktopus Synthesizer ships an update every 5 days, EchoSketch every 2 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Oktopus Synthesizer | EchoSketch |
| --- | --- | --- |
| Price | **$4.99** | $7.99 |
| Rating | [4.8 (12 ratings)](https://appshunter.io/ios/app/oktopus-synthesizer/id6790597981/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/echosketch-performance-delay/id6794466741/reviews)** |
| Number of ratings | **12** | 2 |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Paid | Paid |
| Size | 111 MB | 5 MB |
| Requires iOS | **15** | 17 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Vyacheslav Koristov](https://appshunter.io/developer/6784900754) | [Avi Bortnick](https://appshunter.io/developer/421929037) |

## What reviewers say

### Oktopus Synthesizer

[App page](https://appshunter.io/ios/app/oktopus-synthesizer/id6790597981)

This powerful iOS synthesizer and AUv3 extension allows for deep sound design and music creation. Shape sounds with 8 synth blocks, combine oscillators and samples, and utilize a flexible effects chain. It functions as a standalone instrument or within compatible DAWs.

**Highlights:** 8-block synth architecture, Oscillator and sample combination, AUv3 instrument support, Sample loading and playback, Flexible effects chain, MPE and MIDI input support, Built-in spectrometer

**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 Oktopus Synthesizer free?

Oktopus Synthesizer costs $4.99, with no in-app purchases.

### Is EchoSketch free?

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

### Which has better reviews, Oktopus Synthesizer or EchoSketch?

EchoSketch is rated higher. Oktopus Synthesizer averages 4.8 out of 5 from 12 ratings, while EchoSketch averages 5.0 from 2 ratings.

### Do Oktopus Synthesizer or EchoSketch have ads?

Neither Oktopus Synthesizer nor EchoSketch shows ads.

### Which is updated more often, Oktopus Synthesizer or EchoSketch?

Oktopus Synthesizer ships an update every 5 days, and EchoSketch every 2 days. Most recently, Oktopus Synthesizer 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.*