# Electron ECHO mini piano vs Retromulator

The clearest difference is price: Electron ECHO mini piano at $1.99 against Retromulator's $29.99. Electron ECHO mini piano also leads on review sentiment (93% vs 67%) and iOS requirement (7.0 vs 16.0). Retromulator's advantage is update cadence (every 2 days vs every 2 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Electron ECHO mini piano costs $1.99 and Retromulator $29.99 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 Electron ECHO mini piano against 5.0 for Retromulator. Both are backed by a comparable volume of ratings — 11 and 4 respectively. Written reviews are what separate them: 93% of Electron ECHO mini piano's written reviews are positive against 67% of Retromulator's.

Electron ECHO mini piano ships an update every 2 months, Retromulator every 2 days. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Electron ECHO mini piano | Retromulator |
| --- | --- | --- |
| Price | **$1.99** | $29.99 |
| Rating | [5.0 (11 ratings)](https://appshunter.io/ios/app/electron-echo-mini-piano/id799573588/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/retromulator/id6764767449/reviews) |
| Number of ratings | **11** | 4 |
| Positive reviews | **93.3% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Paid | Paid |
| Size | 6 MB | 144 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Emil Korngold](https://appshunter.io/developer/799573591) | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) |

## What reviewers say

### Electron ECHO mini piano

[App page](https://appshunter.io/ios/app/electron-echo-mini-piano/id799573588)

Experience a simulated musical toy from the 1980s, complete with authentic synthesized sounds and optional battery depletion detuning. Learn classic and modern melodies with a free songbook and enjoy features like reverb and octave shifts.

**Highlights:** Simulated 1980s musical toy, Authentic synthesizer sound, Optional battery depletion detuning, Free songbook with melodies, Reverb effect, Octave down shift, Sub-oscillator for bass tones

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

**In-app purchases:** none


### Retromulator

[App page](https://appshunter.io/ios/app/retromulator/id6764767449)

This app recreates the sound of legendary vintage synthesizers, samplers, and keyboards through authentic low-level emulation. It brings classic hardware sound engines to your device, allowing for detailed sound design and performance.

**Highlights:** Authentic low-level hardware emulation, Virtual analog synths, FM synthesis engines, GM/GS sound modules, Chiptune sound emulation, Organ and electric piano emulations, AUv3 plugin support

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

**In-app purchases:** none


## Frequently asked questions

### Is Electron ECHO mini piano free?

Electron ECHO mini piano costs $1.99, with no in-app purchases.

### Is Retromulator free?

Retromulator costs $29.99, with no in-app purchases.

### Which has better reviews, Electron ECHO mini piano or Retromulator?

Electron ECHO mini piano and Retromulator are both rated 5.0 out of 5 on the App Store, from 11 and 4 ratings respectively.

### Do Electron ECHO mini piano or Retromulator have ads?

Neither Electron ECHO mini piano nor Retromulator shows ads.

### Which is updated more often, Electron ECHO mini piano or Retromulator?

Electron ECHO mini piano ships an update every 2 months, and Retromulator every 2 days. Most recently, Electron ECHO mini piano was updated on November 6, 2026 and Retromulator on November 12, 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.*