# ECHO vs Water Loop Puzzle

The clearest difference is in-app purchases: ECHO at none against Water Loop Puzzle's 4. 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. Water Loop Puzzle sells 4 one-off in-app purchases. ECHO asks for nothing beyond the download.

## The numbers

| Metric | ECHO | Water Loop Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Size | 101 MB | 56 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [wapon Inc.](https://appshunter.io/developer/563984006) | [Anastassiya Shugaley](https://appshunter.io/developer/1895809893) |

## 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


### Water Loop Puzzle

[App page](https://appshunter.io/ios/app/water-loop-puzzle-zen-loop/id6795905714)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,000 Coins | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 5,500 Coins | $3.99 | one-time |
| 12,000 Coins | $7.99 | one-time |


## Frequently asked questions

### Is ECHO free?

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

### Is Water Loop Puzzle free?

Water Loop Puzzle is free to download, with in-app purchases available.

### Do ECHO or Water Loop Puzzle have ads?

Water Loop Puzzle 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.*