# 10 vs Echo

The clearest difference is in-app purchases: Echo at none against 10's 2. 10's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. 10 sells 2 in-app purchases, starting at $1.99 per 7 days. Echo asks for nothing beyond the download.

## The numbers

| Metric | 10 | Echo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/10-daily-math-puzzle/id6756629501/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 10 days | — |
| Monetization | Freemium | — |
| Size | 22 MB | 1 MB |
| Requires iOS | 18.4 | **17.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [Griz](https://appshunter.io/developer/1694219766) | [BERKE ERKESIM](https://appshunter.io/developer/1878370920) |

## What reviewers say

### 10

[App page](https://appshunter.io/ios/app/10-daily-math-puzzle/id6756629501)

Engage in a daily numbers puzzle where you use four given digits to create an equation equaling 10. Track your progress, utilize hints, and join a global community solving the same challenge.

**Highlights:** Daily unique puzzles, Streak tracking, Optional hints, Global shared puzzles, PRO subscription for enhanced features

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Time Offer | $1.99 | per 7 days |
| 10 Pro | $7.99 | per 7 days |


### Echo

[App page](https://appshunter.io/ios/app/echo-grid-puzzle/id6759986579)

**In-app purchases:** none


## Frequently asked questions

### Is 10 free?

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

### Is Echo free?

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

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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.*