# Unlock It! vs ClusterSum

The clearest difference is in-app purchases: Unlock It! at none against ClusterSum's 10. Unlock It! also leads on update cadence (every 6 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ClusterSum sells 10 one-off in-app purchases. Unlock It! asks for nothing beyond the download.

Unlock It! ships an update every 6 weeks, ClusterSum every 4 months. The most recent releases landed on November 5, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Unlock It! | ClusterSum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Size | 107 MB | 10 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bugra Unver](https://appshunter.io/developer/1825459451) | [Snake Johns](https://appshunter.io/developer/1876441740) |

## What reviewers say

### Unlock It!

[App page](https://appshunter.io/ios/app/unlock-it-lock-puzzle/id6758612505)

**Features:** macOS Compatibility

**In-app purchases:** none


### ClusterSum

[App page](https://appshunter.io/ios/app/clustersum/id6759361328)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Treasure Bag | $4.99 | one-time |
| Santa's Coin Sack | $4.99 | one-time |
| Vault Drop | $9.99 | one-time |
| Holiday Weekend Boost | $9.99 | one-time |
| Long Weekend Vault | $19.99 | one-time |
| North Pole Mega Chest | $19.99 | one-time |
| King's Reserve | $29.99 | one-time |
| Royal Hoard | $49.99 | one-time |
| Imperial Vault | $79.99 | one-time |
| Mega Pack | $99.99 | one-time |


## Frequently asked questions

### Is Unlock It! free?

Unlock It! is free to download, with no in-app purchases.

### Is ClusterSum free?

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

### Do Unlock It! or ClusterSum have ads?

Neither Unlock It! nor ClusterSum shows ads.

### Which is updated more often, Unlock It! or ClusterSum?

Unlock It! ships an update every 6 weeks, and ClusterSum every 4 months. Most recently, Unlock It! was updated on November 5, 2026 and ClusterSum on November 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*