# Zero Grid vs ECHO

The clearest difference is in-app purchases: ECHO at none against Zero Grid's 1. ECHO also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Zero Grid sells 1 one-off in-app purchase. ECHO asks for nothing beyond the download.

## The numbers

| Metric | Zero Grid | ECHO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Size | 141 MB | 101 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuki Tsuna](https://appshunter.io/developer/1868553519) | [wapon Inc.](https://appshunter.io/developer/563984006) |

## What reviewers say

### Zero Grid

[App page](https://appshunter.io/ios/app/zero-grid/id6760925027)

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

**In-app purchases (1)**

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


### ECHO

[App page](https://appshunter.io/ios/app/echo-grids-number-puzzle/id6791798318)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zero Grid free?

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

### Is ECHO free?

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

### Do Zero Grid or ECHO have ads?

Zero Grid shows ads; ECHO does not.

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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.*