# AI添削・校正 vs Calenk

The clearest difference is ads: Calenk at none against AI添削・校正's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

AI添削・校正 ships an update every 5 days, Calenk weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AI添削・校正 | Calenk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Weekly |
| Size | 14 MB | 51 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideshi Otsuru](https://appshunter.io/developer/446092368) | [Toshiki Higaki](https://appshunter.io/developer/6782993971) |

## What reviewers say

### AI添削・校正

[App page](https://appshunter.io/ios/app/ai/id6749517394)

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

**In-app purchases:** none


### Calenk

[App page](https://appshunter.io/ios/app/calenk/id6782993969)

**In-app purchases:** none


## Frequently asked questions

### Is AI添削・校正 free?

AI添削・校正 is free to download, with no in-app purchases.

### Is Calenk free?

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

### Do AI添削・校正 or Calenk have ads?

AI添削・校正 shows ads; Calenk does not.

### Which is updated more often, AI添削・校正 or Calenk?

AI添削・校正 ships an update every 5 days, and Calenk weekly. Most recently, AI添削・校正 was updated on October 30, 2026 and Calenk on October 31, 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.*