# GridFlash vs Number Memory

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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GridFlash ships an update every 8 days, Number Memory weekly. Both last shipped on September 16, 2026.

## The numbers

| Metric | GridFlash | Number Memory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 days | **Weekly** |
| Size | 14 MB | 24 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Jarrod Faucher](https://appshunter.io/developer/1889061331) | [Iclal KABATAS](https://appshunter.io/developer/1896019931) |

## What reviewers say

### GridFlash

[App page](https://appshunter.io/ios/app/gridflash/id6761349791)

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

**In-app purchases:** none


### Number Memory

[App page](https://appshunter.io/ios/app/number-memory-brain-age-test/id6770123794)

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

**In-app purchases:** none


## Frequently asked questions

### Is GridFlash free?

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

### Is Number Memory free?

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

### Do GridFlash or Number Memory have ads?

Number Memory shows ads; GridFlash does not.

### Which is updated more often, GridFlash or Number Memory?

GridFlash ships an update every 8 days, and Number Memory weekly. Most recently, GridFlash was updated on September 16, 2026 and Number Memory on September 16, 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.*