# AU EngineCore vs EchoSketch

The clearest difference is price: EchoSketch at $7.99 against AU EngineCore's $22.99. EchoSketch also leads on update cadence (every 2 days vs weekly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

AU EngineCore costs $22.99 and EchoSketch $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AU EngineCore ships an update weekly, EchoSketch every 2 days. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | AU EngineCore | EchoSketch |
| --- | --- | --- |
| Price | $22.99 | **$7.99** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/echosketch-performance-delay/id6794466741/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | — | Paid |
| Size | 13 MB | 5 MB |
| Requires iOS | **16.6** | 17 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Sorin TASU](https://appshunter.io/developer/1883473854) | [Avi Bortnick](https://appshunter.io/developer/421929037) |

## What reviewers say

### AU EngineCore

[App page](https://appshunter.io/ios/app/au-enginecore/id6766300671)

**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 AU EngineCore free?

AU EngineCore costs $22.99, with no in-app purchases.

### Is EchoSketch free?

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

### Do AU EngineCore or EchoSketch have ads?

Neither AU EngineCore nor EchoSketch shows ads.

### Which is updated more often, AU EngineCore or EchoSketch?

AU EngineCore ships an update weekly, and EchoSketch every 2 days. Most recently, AU EngineCore was updated on October 8, 2026 and EchoSketch 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.*