# ARPAIPAI vs OshiDiary

The clearest difference is in-app purchases: ARPAIPAI at none against OshiDiary's 2. ARPAIPAI also leads on device support (3 vs 1) and iOS requirement (14.0 vs 18.0). On price, update cadence and ads there is nothing between them.

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

ARPAIPAI ships an update every 8 days, OshiDiary every 2 weeks. The most recent releases landed on September 8, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | ARPAIPAI | OshiDiary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Size | 176 MB | 33 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Ninth Games Co., Ltd.](https://appshunter.io/developer/1505066056) | [YU FANG](https://appshunter.io/developer/1458710477) |

## What reviewers say

### ARPAIPAI

[App page](https://appshunter.io/ios/app/arpaipai/id6471681014)

**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 ARPAIPAI free?

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

### Is OshiDiary free?

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

### Do ARPAIPAI or OshiDiary have ads?

Neither ARPAIPAI nor OshiDiary shows ads.

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

ARPAIPAI ships an update every 8 days, and OshiDiary every 2 weeks. Most recently, ARPAIPAI was updated on September 8, 2026 and OshiDiary on September 7, 2026.

---

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