# チカハン vs OshiDiary

The clearest difference is in-app purchases: チカハン at none against OshiDiary's 2. チカハン also leads on iOS requirement (15.1 vs 18.0). OshiDiary's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. OshiDiary sells 2 in-app purchases, starting at $4.99 per month. チカハン asks for nothing beyond the download.

チカハン ships an update every 2 months, OshiDiary every 2 weeks. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | チカハン | OshiDiary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 55 MB | 35 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [KOHTA SHIOMI](https://appshunter.io/developer/1633664458) | [YU FANG](https://appshunter.io/developer/1458710477) |

## What reviewers say

### チカハン

[App page](https://appshunter.io/ios/app/id1633664456)

**Features:** macOS Compatibility

**In-app purchases:** none


### OshiDiary

[App page](https://appshunter.io/ios/app/oshidiary/id6755083192)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $4.99 | per month |
| Annual Plan | $19.99 | per year |


## Frequently asked questions

### Is チカハン free?

チカハン is free to download, with no in-app purchases.

### Is OshiDiary free?

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

### Do チカハン or OshiDiary have ads?

チカハン shows ads; OshiDiary does not.

### Which is updated more often, チカハン or OshiDiary?

チカハン ships an update every 2 months, and OshiDiary every 2 weeks. Most recently, チカハン was updated on October 9, 2026 and OshiDiary on October 24, 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.*