# f(x) vs 抗菌薬Chronicle

The clearest difference is in-app purchases: f(x) at none against 抗菌薬Chronicle's 1. f(x) also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.6). 抗菌薬Chronicle's advantage is update cadence (daily vs monthly). On price and ads there is nothing between them.

Both are free to download. 抗菌薬Chronicle sells 1 one-off in-app purchase. f(x) asks for nothing beyond the download.

f(x) ships an update monthly, 抗菌薬Chronicle daily. The most recent releases landed on September 25, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | f(x) | 抗菌薬Chronicle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Size | 77 MB | 13 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 9+ |
| Developer | [Ryo Matsumoto](https://appshunter.io/developer/1725054568) | [Takahiro Ito](https://appshunter.io/developer/6787806782) |

## What reviewers say

### f(x)

[App page](https://appshunter.io/ios/app/fx/id6475749250)

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

**In-app purchases:** none


### 抗菌薬Chronicle

[App page](https://appshunter.io/ios/app/chronicle/id6797537970)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全編を解錠 | $5.99 | one-time |


## Frequently asked questions

### Is f(x) free?

f(x) is free to download, with no in-app purchases.

### Is 抗菌薬Chronicle free?

抗菌薬Chronicle is free to download, with in-app purchases available.

### Do f(x) or 抗菌薬Chronicle have ads?

Neither f(x) nor 抗菌薬Chronicle shows ads.

### Which is updated more often, f(x) or 抗菌薬Chronicle?

f(x) ships an update monthly, and 抗菌薬Chronicle daily. Most recently, f(x) was updated on September 25, 2026 and 抗菌薬Chronicle on September 30, 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.*