# Melthaven vs SL Echo

The clearest difference is in-app purchases: SL Echo at none against Melthaven's 1. SL Echo also leads on update cadence (every 5 days vs every 6 weeks) and iOS requirement (15.0 vs 17.0). Melthaven's advantage is price ($2.99 vs $6.99) and ratings volume (4 vs 1). On rating, ads and device support there is nothing between them.

Melthaven costs $2.99 and SL Echo $6.99 up front. Melthaven sells 1 one-off in-app purchase. SL Echo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Melthaven against 5.0 for SL Echo. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Melthaven ships an update every 6 weeks, SL Echo every 5 days. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Melthaven | SL Echo |
| --- | --- | --- |
| Price | **$2.99** | $6.99 |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/melthaven/id6761633340/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sl-echo/id6797348934/reviews) |
| Number of ratings | **4** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 23 MB | 18 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [quantovox](https://appshunter.io/developer/484686124) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### Melthaven

[App page](https://appshunter.io/ios/app/melthaven/id6761633340)

This app provides a note-triggered phase shifter for guitarists, bassists, and synthesizers. It offers organic, rhythmic movement that syncs to your playing, with analog-modeled filters for diverse sonic textures. Enhance loops or create experimental sounds with its input-dependent modulation.

**Highlights:** Note-triggered phase shifting, Analog-modeled OTA filters, Responds to guitar and bass transients, Enhances pre-recorded loops, Input-dependent synth modulation, Low-latency engine

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Melthaven Pro | $4.99 | one-time |


### 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 Melthaven free?

Melthaven costs $2.99, and also offers in-app purchases.

### Is SL Echo free?

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

### Which has better reviews, Melthaven or SL Echo?

Melthaven and SL Echo are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Melthaven or SL Echo have ads?

Neither Melthaven nor SL Echo shows ads.

### Which is updated more often, Melthaven or SL Echo?

Melthaven ships an update every 6 weeks, and SL Echo every 5 days. Most recently, Melthaven was updated on October 14, 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.*