# ECHO vs ShadowGrid

The clearest difference is in-app purchases: ECHO at none against ShadowGrid's 2. ECHO also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. ShadowGrid sells 2 one-off in-app purchases. ECHO asks for nothing beyond the download.

## The numbers

| Metric | ECHO | ShadowGrid |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Size | 101 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [wapon Inc.](https://appshunter.io/developer/563984006) | [Le Dinh Phuc](https://appshunter.io/developer/1590689413) |

## What reviewers say

### ECHO

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

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

**In-app purchases:** none


### ShadowGrid

[App page](https://appshunter.io/ios/app/shadowgrid/id6802219878)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Skin Pack | $1.99 | one-time |


## Frequently asked questions

### Is ECHO free?

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

### Is ShadowGrid free?

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

### Do ECHO or ShadowGrid have ads?

ShadowGrid 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.*