# Echo String™ Lite vs AUMI

Echo String™ Lite and AUMI both sit at 5.0 stars, but that hides the real split: 89% of Echo String™ Lite's written reviews are positive against 50% of AUMI's. Echo String™ Lite also leads on iOS requirement (6.1 vs 12.4). AUMI's advantage is device support (3 vs 1). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. 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 Echo String™ Lite against 5.0 for AUMI. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews are what separate them: 89% of Echo String™ Lite's written reviews are positive against 50% of AUMI's.

Echo String™ Lite ships an update every 7 months, AUMI every 6 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Echo String™ Lite | AUMI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/echo-string-lite/id424405657/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/aumi/id647002265/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | **88.9% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 3 MB | 69 MB |
| Requires iOS | **6.1** | 12.4 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Supertintin Co., Ltd](https://appshunter.io/developer/345365970) | [Rensselaer Polytechnic Institute](https://appshunter.io/developer/545728224) |

## What reviewers say

### Echo String™ Lite

[App page](https://appshunter.io/ios/app/echo-string-lite/id424405657)

Create music easily with this innovative harp app. It features three partitions of strings with chord mask settings, allowing you to glide and produce melodies. Record your performances and play them back at original or dual speed.

**Highlights:** 3 partition strings, Chord Mask settings, Record and playback functionality, Two playback speeds, Visual effects, Supports AudioBus and Inter-App Audio, WiFi MIDI Out & MIDI Out

**In-app purchases:** none


### AUMI

[App page](https://appshunter.io/ios/app/aumi/id647002265)

This app allows individuals with limited mobility to create music through movement and gestures. It focuses on improvisation and self-expression, making music accessible to a wider range of people, including those with profound physical disabilities.

**Highlights:** Music creation through movement and gestures, Focus on improvisation and self-expression, Accessible for individuals with profound physical disabilities, Uses device cameras for input, Configurable sound sensitivity, MIDI controller functionality, Import audio from other apps

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Echo String™ Lite free?

Echo String™ Lite is free to download, with no in-app purchases.

### Is AUMI free?

AUMI is free to download, with no in-app purchases.

### Which has better reviews, Echo String™ Lite or AUMI?

Echo String™ Lite and AUMI are both rated 5.0 out of 5 on the App Store, from 2 and 4 ratings respectively.

### Do Echo String™ Lite or AUMI have ads?

Neither Echo String™ Lite nor AUMI shows ads.

### Which is updated more often, Echo String™ Lite or AUMI?

Echo String™ Lite ships an update every 7 months, and AUMI every 6 months. Most recently, Echo String™ Lite was updated on November 1, 2026 and AUMI on November 1, 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.*