# 暦日ビューア vs KotenOCR

The clearest difference is update cadence: KotenOCR at daily against 暦日ビューア's every 5 months. 暦日ビューア's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 暦日ビューア sells 2 one-off in-app purchases and KotenOCR sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

暦日ビューア ships an update every 5 months, KotenOCR daily. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 暦日ビューア | KotenOCR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/kotenocr/id6760045646/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Monetization | — | Free |
| Size | 17 MB | 248 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Yukiko Iwai](https://appshunter.io/developer/965630131) | [Satoru Nakamura](https://appshunter.io/developer/1841530905) |

## What reviewers say

### 暦日ビューア

[App page](https://appshunter.io/ios/app/id1445348476)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $3.99 | one-time |
| 全機能有効 | $3.99 | one-time |


### KotenOCR

[App page](https://appshunter.io/ios/app/kotenocr/id6760045646)

This application uses AI to convert classical Japanese cursive script (kuzushiji) into digital text. Simply take a photo of the script, and the app will process it on-device, supporting over 7,000 characters and optimized for historical documents.

**Highlights:** Photo-to-text conversion, AI-powered kuzushiji recognition, On-device processing (offline), Copy and share text, Supports 7,000+ characters, Optimized for historical documents

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $6.99 | one-time |


## Frequently asked questions

### Is 暦日ビューア free?

暦日ビューア is free to download, with in-app purchases available.

### Is KotenOCR free?

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

### Do 暦日ビューア or KotenOCR have ads?

Neither 暦日ビューア nor KotenOCR shows ads.

### Which is updated more often, 暦日ビューア or KotenOCR?

暦日ビューア ships an update every 5 months, and KotenOCR daily. Most recently, 暦日ビューア was updated on October 26, 2026 and KotenOCR 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.*