# Difference Grid vs Forest Math

The clearest difference is ads: Difference Grid at none against Forest Math's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Difference Grid sells 2 one-off in-app purchases and Forest Math sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Difference Grid ships an update every 9 days, Forest Math fortnightly. The most recent releases landed on September 23, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Difference Grid | Forest Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/difference-grid/id6476205676/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 78 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Hamner](https://appshunter.io/developer/1726199920) | [MIGMIG DIJITAL PLATFORM ANONIM SIRKETI](https://appshunter.io/developer/1825868534) |

## What reviewers say

### Difference Grid

[App page](https://appshunter.io/ios/app/difference-grid/id6476205676)

A fresh take on "spot the difference" games where players find differing tiles between two grids. Each level increases the challenge with more differences to locate before time expires. Incorrect guesses deduct precious seconds from the clock.

**Highlights:** Find differences between grids, Increasingly challenging levels, Time-based gameplay, Penalties for wrong answers, Intuitive tile-matching mechanic

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Tokens | $0.99 | one-time |
| 5 Tokens | $0.99 | one-time |


### Forest Math

[App page](https://appshunter.io/ios/app/forest-math/id6775507910)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Difference Grid free?

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

### Is Forest Math free?

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

### Do Difference Grid or Forest Math have ads?

Forest Math shows ads; Difference Grid does not.

### Which is updated more often, Difference Grid or Forest Math?

Difference Grid ships an update every 9 days, and Forest Math fortnightly. Most recently, Difference Grid was updated on September 23, 2026 and Forest Math on September 26, 2026.

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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.*