# Block King vs OJ Memory

The clearest difference is in-app purchases: OJ Memory at none against Block King's 1. OJ Memory also leads on ads (none vs shown) and update cadence (every 2 days vs every 8 days). Block King's advantage is iOS requirement (15.0 vs 26.0). On price and device support there is nothing between them.

Both are free to download. Block King sells 1 one-off in-app purchase. OJ Memory asks for nothing beyond the download.

Block King ships an update every 8 days, OJ Memory every 2 days. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Block King | OJ Memory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 days | **Every 2 days** |
| Size | 71 MB | 112 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Questar Games](https://appshunter.io/developer/1881730721) | [Jonas Hedberg](https://appshunter.io/developer/6797882148) |

## What reviewers say

### Block King

[App page](https://appshunter.io/ios/app/block-king-cube-puzzle/id6770665476)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock No Ads | $4.99 | one-time |


### OJ Memory

[App page](https://appshunter.io/ios/app/oj-memory/id6805472383)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Block King free?

Block King is free to download, with in-app purchases available.

### Is OJ Memory free?

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

### Do Block King or OJ Memory have ads?

Block King shows ads; OJ Memory does not.

### Which is updated more often, Block King or OJ Memory?

Block King ships an update every 8 days, and OJ Memory every 2 days. Most recently, Block King was updated on September 30, 2026 and OJ Memory 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.*