# 塔を登る者 vs FACTOR BUSTER

The clearest difference is in-app purchases: 塔を登る者 at none against FACTOR BUSTER's 1. 塔を登る者 also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FACTOR BUSTER sells 1 one-off in-app purchase. 塔を登る者 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 塔を登る者 | FACTOR BUSTER |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 days | Every 2 days |
| Size | 376 MB | 180 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Yuki Noda](https://appshunter.io/developer/1763773513) | [Shunsuke Kishino](https://appshunter.io/developer/6784969791) |

## What reviewers say

### 塔を登る者

[App page](https://appshunter.io/ios/app/id6648771322)

**In-app purchases:** none


### FACTOR BUSTER

[App page](https://appshunter.io/ios/app/factor-buster/id6824509964)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is 塔を登る者 free?

塔を登る者 is free to download, with no in-app purchases.

### Is FACTOR BUSTER free?

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

### Do 塔を登る者 or FACTOR BUSTER have ads?

Both 塔を登る者 and FACTOR BUSTER show ads.

### Which is updated more often, 塔を登る者 or FACTOR BUSTER?

塔を登る者 ships an update every 2 days, and FACTOR BUSTER every 2 days. Most recently, 塔を登る者 was updated on October 30, 2026 and FACTOR BUSTER on November 6, 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.*