# SumX vs HamTower

The clearest difference is in-app purchases: SumX at none against HamTower's 2. HamTower's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HamTower sells 2 one-off in-app purchases. SumX asks for nothing beyond the download.

SumX ships an update every 5 days, HamTower every 9 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SumX | HamTower |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 9 days |
| Size | 41 MB | 57 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SumX Games LTD.](https://appshunter.io/developer/1872948245) | [Kyosuke Takahashi](https://appshunter.io/developer/1393537221) |

## What reviewers say

### SumX

[App page](https://appshunter.io/ios/app/sumx-daily-math-brain-puzzle/id6758439413)

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

**In-app purchases:** none


### HamTower

[App page](https://appshunter.io/ios/app/hamtower/id6760577091)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gacha Ticket | $1.99 | one-time |
| Remove Ads | $7.99 | one-time |


## Frequently asked questions

### Is SumX free?

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

### Is HamTower free?

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

### Do SumX or HamTower have ads?

Both SumX and HamTower show ads.

### Which is updated more often, SumX or HamTower?

SumX ships an update every 5 days, and HamTower every 9 days. Most recently, SumX was updated on November 5, 2026 and HamTower on October 31, 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.*