# Chain Math vs EchoGrid

The clearest difference is in-app purchases: EchoGrid at none against Chain Math's 10. EchoGrid also leads on ads (none vs shown). Chain Math's advantage is iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Chain Math sells 10 one-off in-app purchases. EchoGrid asks for nothing beyond the download.

## The numbers

| Metric | Chain Math | EchoGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/chain-math/id6758923534/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 10 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jared Deason](https://appshunter.io/developer/1875789993) | [Sebastian Rodriguez Garcia](https://appshunter.io/developer/1890549599) |

## What reviewers say

### Chain Math

[App page](https://appshunter.io/ios/app/chain-math/id6758923534)

Connect adjacent numbers on a grid to reach a target sum, strategizing with powerups and combos. Offers multiple game modes for quick sessions or extended play.

**Highlights:** Connect adjacent number tiles, Match target sums, Combo multipliers, Multiple game modes, Strategic powerups, Daily rewards and achievements

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add Wildcards | $0.99 | one-time |
| Add Minus Signs | $0.99 | one-time |
| Time Slow | $1.49 | one-time |
| Number Hop | $1.49 | one-time |
| Board Shuffle ×3 | $1.99 | one-time |
| Starter Bundle | $2.99 | one-time |
| Time Freeze ×3 | $3.49 | one-time |
| Time Slow ×3 | $3.49 | one-time |
| Number Hop ×3 | $3.49 | one-time |
| Premium Bundle | $9.99 | one-time |


### EchoGrid

[App page](https://appshunter.io/ios/app/echogrid-memory-puzzle/id6780402788)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chain Math free?

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

### Is EchoGrid free?

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

### Do Chain Math or EchoGrid have ads?

Chain Math shows ads; EchoGrid 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.*