# SoundEcho vs Hyper Sudoku

The clearest difference is ads: SoundEcho at none against Hyper Sudoku's shown. Hyper Sudoku's advantage is update cadence (every 3 days vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. SoundEcho sells 1 one-off in-app purchase and Hyper Sudoku sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

SoundEcho ships an update every 5 weeks, Hyper Sudoku every 3 days. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | SoundEcho | Hyper Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/soundecho/id1639116371/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 7 MB | 29 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Kristof Nijs](https://appshunter.io/developer/1608072573) | [Fumihiro Kawasaki](https://appshunter.io/developer/1246668885) |

## What reviewers say

### SoundEcho

[App page](https://appshunter.io/ios/app/soundecho/id1639116371)

A fun and accessible memory game using sound cues. Players match pairs of buttons that produce the same sound to clear the board. Supports multiple sound themes and player counts, with Game Center integration.

**Highlights:** Sound-based memory matching, VoiceOver accessibility, Animal and computer sound themes, Multiple difficulty levels (10, 15, 20 sounds), 2-4 player real-time multiplayer, Game Center integration

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchasing the app | $4.49 | one-time |


### Hyper Sudoku

[App page](https://appshunter.io/ios/app/hyper-sudoku/id6757954294)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | per month |
| Pro | $24.99 | per year |
| Pro | $2.99 | one-time |


## Frequently asked questions

### Is SoundEcho free?

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

### Is Hyper Sudoku free?

Hyper Sudoku is free to download, with in-app purchases available.

### Do SoundEcho or Hyper Sudoku have ads?

Hyper Sudoku shows ads; SoundEcho does not.

### Which is updated more often, SoundEcho or Hyper Sudoku?

SoundEcho ships an update every 5 weeks, and Hyper Sudoku every 3 days. Most recently, SoundEcho was updated on October 24, 2026 and Hyper Sudoku on October 20, 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.*