# The Sum vs ClusterSum

The clearest difference is in-app purchases: The Sum at none against ClusterSum's 10. The Sum also leads on iOS requirement (13.0 vs 16.0). ClusterSum's advantage is ads (none vs shown). On price and device support there is nothing between them.

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

## The numbers

| Metric | The Sum | ClusterSum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Size | 144 MB | 10 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LIM SING CHYUAN](https://appshunter.io/developer/1825404821) | [Snake Johns](https://appshunter.io/developer/1876441740) |

## What reviewers say

### The Sum

[App page](https://appshunter.io/ios/app/the-sum-math-and-puzzle/id6757253249)

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

**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 The Sum free?

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

### Is ClusterSum free?

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

### Do The Sum or ClusterSum have ads?

The Sum shows ads; ClusterSum does not.

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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.*