# Chum vs OshiDiary

The clearest difference is in-app purchases: Chum at none against OshiDiary's 2. OshiDiary's advantage is update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

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

Chum ships an update monthly, OshiDiary every 2 weeks. The most recent releases landed on September 9, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Chum | OshiDiary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 20 MB | 33 MB |
| Requires iOS | 18.5 | **18.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Kota Sakurai](https://appshunter.io/developer/1523595704) | [YU FANG](https://appshunter.io/developer/1458710477) |

## What reviewers say

### Chum

[App page](https://appshunter.io/ios/app/chum/id6748934376)

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

**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 Chum free?

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

### Is OshiDiary free?

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

### Do Chum or OshiDiary have ads?

Neither Chum nor OshiDiary shows ads.

### Which is updated more often, Chum or OshiDiary?

Chum ships an update monthly, and OshiDiary every 2 weeks. Most recently, Chum was updated on September 9, 2026 and OshiDiary on September 7, 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.*