# 周期カレンダー vs Fin

The clearest difference is in-app purchases: 周期カレンダー at none against Fin's 3. 周期カレンダー also leads on update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Fin sells 3 in-app purchases, starting at $2.99 per month. 周期カレンダー asks for nothing beyond the download.

周期カレンダー ships an update every 4 days, Fin every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | 周期カレンダー | Fin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 17 MB | 16 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Free Canvas Co., Ltd.](https://appshunter.io/developer/658733897) | [Sota Hidaka](https://appshunter.io/developer/6783721753) |

## What reviewers say

### 周期カレンダー

[App page](https://appshunter.io/ios/app/id1619929345)

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

**In-app purchases:** none


### Fin

[App page](https://appshunter.io/ios/app/fin/id6797369393)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fin Pro 月額 | $2.99 | per month |
| Fin Pro 年額 | $29.99 | per year |
| Fin Pro | $29.99 | one-time |


## Frequently asked questions

### Is 周期カレンダー free?

周期カレンダー is free to download, with no in-app purchases.

### Is Fin free?

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

### Do 周期カレンダー or Fin have ads?

Neither 周期カレンダー nor Fin shows ads.

### Which is updated more often, 周期カレンダー or Fin?

周期カレンダー ships an update every 4 days, and Fin every 2 weeks. Most recently, 周期カレンダー was updated on October 25, 2026 and Fin on October 25, 2026.

---

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