# Memory Kings vs BrainBoostX

The clearest difference is in-app purchases: BrainBoostX at none against Memory Kings's 3. Memory Kings's advantage is iOS requirement (11.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Memory Kings sells 3 one-off in-app purchases. BrainBoostX asks for nothing beyond the download.

Memory Kings ships an update every 6 days, BrainBoostX every 5 days. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Memory Kings | BrainBoostX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 days | **Every 5 days** |
| Size | 101 MB | 38 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Koning](https://appshunter.io/developer/1676832719) | [HECTOR FABIAN PINATARES MENDEZ](https://appshunter.io/developer/1746585331) |

## What reviewers say

### Memory Kings

[App page](https://appshunter.io/ios/app/memory-kings/id6473804571)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bag of 500 coins | $0.99 | one-time |
| Bag of 1,000 coins | $1.99 | one-time |
| Bag of 2,000 coins | $2.99 | one-time |


### BrainBoostX

[App page](https://appshunter.io/ios/app/brainboostx/id6741430789)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Memory Kings free?

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

### Is BrainBoostX free?

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

### Do Memory Kings or BrainBoostX have ads?

Both Memory Kings and BrainBoostX show ads.

### Which is updated more often, Memory Kings or BrainBoostX?

Memory Kings ships an update every 6 days, and BrainBoostX every 5 days. Most recently, Memory Kings was updated on October 9, 2026 and BrainBoostX on October 2, 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.*