# Morphix Synthesizer vs SL Echo

The clearest difference is rating: SL Echo at 5.0 against Morphix Synthesizer's 3.4. SL Echo also leads on update cadence (every 5 days vs every 2 weeks). Morphix Synthesizer's advantage is price ($1.99 vs $6.99) and ratings volume (5 vs 1). On ads, in-app purchases, monetization model and device support there is nothing between them.

Morphix Synthesizer costs $1.99 and SL Echo $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SL Echo holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Morphix Synthesizer has 5 ratings behind it against 1, so its average is the more settled of the two.

Morphix Synthesizer ships an update every 2 weeks, SL Echo every 5 days. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Morphix Synthesizer | SL Echo |
| --- | --- | --- |
| Price | **$1.99** | $6.99 |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/morphix-synthesizer/id6780645667/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sl-echo/id6797348934/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Paid | Paid |
| Size | 14 MB | 18 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aleph Void LLC](https://appshunter.io/developer/1896525800) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### Morphix Synthesizer

[App page](https://appshunter.io/ios/app/morphix-synthesizer/id6780645667)

This app is a polyphonic morphing wavetable synthesizer that recreates a classic lost instrument. It features a morphing oscillator, state-variable filter, and built-in flanger, allowing for evolving sound textures. It can be used standalone or within a DAW.

**Highlights:** Morphing wavetable oscillator, State-variable filter, Independent ADSR envelopes, Tempo-syncable LFO, Built-in stereo flanger, 64 factory presets, AUv3 plugin support

**Features:** Vision Pro support

**In-app purchases:** none


### SL Echo

[App page](https://appshunter.io/ios/app/sl-echo/id6797348934)

This audio effect app provides animated delay and space for musical decisions on iPad. Easily adjust time, feedback, and tone for various repeat styles, while maintaining a clear dry signal with stereo width and ducking. It supports AUv3 integration with popular music hosts.

**Highlights:** Animated delay and space effects, Adjustable time and feedback, Tone shaping controls, Stereo width and ducking, AUv3 support, Standalone preview mode, Factory and user presets

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

**In-app purchases:** none


## Frequently asked questions

### Is Morphix Synthesizer free?

Morphix Synthesizer costs $1.99, with no in-app purchases.

### Is SL Echo free?

SL Echo costs $6.99, with no in-app purchases.

### Which has better reviews, Morphix Synthesizer or SL Echo?

SL Echo is rated higher. Morphix Synthesizer averages 3.4 out of 5 from 5 ratings, while SL Echo averages 5.0 from 1 ratings.

### Do Morphix Synthesizer or SL Echo have ads?

Neither Morphix Synthesizer nor SL Echo shows ads.

### Which is updated more often, Morphix Synthesizer or SL Echo?

Morphix Synthesizer ships an update every 2 weeks, and SL Echo every 5 days. Most recently, Morphix Synthesizer was updated on October 6, 2026 and SL Echo on September 30, 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.*