# Perfect Echo vs Takuzu Binary

The clearest difference is update cadence: Takuzu Binary at every 3 days against Perfect Echo's every 35 months. Perfect Echo's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Perfect Echo ships an update every 35 months, Takuzu Binary every 3 days. The most recent releases landed on May 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Perfect Echo | Takuzu Binary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 35 months | **Every 3 days** |
| Size | 41 MB | 46 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Marco Andreotti](https://appshunter.io/developer/1514019597) | [Edouard Schlumberger](https://appshunter.io/developer/1754832325) |

## What reviewers say

### Perfect Echo

[App page](https://appshunter.io/ios/app/perfect-echo/id1544980146)

**Features:** macOS Compatibility

**In-app purchases:** none


### Takuzu Binary

[App page](https://appshunter.io/ios/app/takuzu-binary-puzzle-clash/id6757536906)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Perfect Echo free?

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

### Is Takuzu Binary free?

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

### Do Perfect Echo or Takuzu Binary have ads?

Both Perfect Echo and Takuzu Binary show ads.

### Which is updated more often, Perfect Echo or Takuzu Binary?

Perfect Echo ships an update every 35 months, and Takuzu Binary every 3 days. Most recently, Perfect Echo was updated on May 16, 2026 and Takuzu Binary on September 8, 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.*