# 正for介護 vs CAST

The clearest difference is device support: 正for介護 at 3 against CAST's 1. CAST's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads 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.

正for介護 ships an update every 14 months, CAST every 9 months. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 正for介護 | CAST |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 9 months** |
| Size | 30 MB | 3 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 12+ | 17+ |
| Developer | [GOOD CYCLE SYSTEM INC.](https://appshunter.io/developer/857522909) | [Masaya Fukushima](https://appshunter.io/developer/1601597939) |

## What reviewers say

### 正for介護

[App page](https://appshunter.io/ios/app/for/id1494414350)

**Features:** Vision Pro support

**In-app purchases:** none


### CAST

[App page](https://appshunter.io/ios/app/cast-q/id1604027334)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 正for介護 free?

正for介護 is free to download, with no in-app purchases.

### Is CAST free?

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

### Do 正for介護 or CAST have ads?

Neither 正for介護 nor CAST shows ads.

### Which is updated more often, 正for介護 or CAST?

正for介護 ships an update every 14 months, and CAST every 9 months. Most recently, 正for介護 was updated on October 13, 2026 and CAST on October 19, 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.*