# Sound Match Memory vs Aether Echo

The clearest difference is in-app purchases: Sound Match Memory at none against Aether Echo's 1. Sound Match Memory also leads on ads (none vs shown). Aether Echo's advantage is update cadence (every 2 days vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Aether Echo sells 1 one-off in-app purchase. Sound Match Memory asks for nothing beyond the download.

Sound Match Memory ships an update fortnightly, Aether Echo every 2 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Sound Match Memory | Aether Echo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 10 MB | 1 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [naoya endo](https://appshunter.io/developer/1663625315) | [Sui Fai Law](https://appshunter.io/developer/1889201616) |

## What reviewers say

### Sound Match Memory

[App page](https://appshunter.io/ios/app/sound-match-memory/id6761288437)

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

**In-app purchases:** none


### Aether Echo

[App page](https://appshunter.io/ios/app/aether-echo/id6762047034)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Sound Match Memory free?

Sound Match Memory is free to download, with no in-app purchases.

### Is Aether Echo free?

Aether Echo is free to download, with in-app purchases available.

### Do Sound Match Memory or Aether Echo have ads?

Aether Echo shows ads; Sound Match Memory does not.

### Which is updated more often, Sound Match Memory or Aether Echo?

Sound Match Memory ships an update fortnightly, and Aether Echo every 2 days. Most recently, Sound Match Memory was updated on October 10, 2026 and Aether Echo on October 25, 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.*