# 膝日記 vs JOA2023

The clearest difference is device support: JOA2023 at 3 against 膝日記's —. 膝日記's advantage is iOS requirement (10.0 vs 12.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 膝日記 | JOA2023 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 2 days |
| Size | 69 MB | 35 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [順天堂大学](https://appshunter.io/developer/1080910962) | [The Japanese Orthopaedic Association](https://appshunter.io/developer/1462255873) |

## What reviewers say

### 膝日記

[App page](https://appshunter.io/ios/app/id1603760244)

**In-app purchases:** none


### JOA2023

[App page](https://appshunter.io/ios/app/joa2023/id6447340600)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 膝日記 free?

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

### Is JOA2023 free?

JOA2023 is free to download, with no in-app purchases.

---

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