# LearnSousyo2 byNSDev vs 和暦checker

The clearest difference is in-app purchases: LearnSousyo2 byNSDev at none against 和暦checker's 1. LearnSousyo2 byNSDev also leads on ads (none vs shown) and iOS requirement (12.0 vs 17.0). 和暦checker's advantage is update cadence (every 4 days vs every 5 months). On price and device support there is nothing between them.

Both are free to download. 和暦checker sells 1 one-off in-app purchase. LearnSousyo2 byNSDev asks for nothing beyond the download.

LearnSousyo2 byNSDev ships an update every 5 months, 和暦checker every 4 days. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | LearnSousyo2 byNSDev | 和暦checker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 4 days** |
| Size | 42 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [Kosuke Mawatari](https://appshunter.io/developer/1489564137) |

## What reviewers say

### LearnSousyo2 byNSDev

[App page](https://appshunter.io/ios/app/learnsousyo2-bynsdev/id1255125108)

**Features:** macOS Compatibility

**In-app purchases:** none


### 和暦checker

[App page](https://appshunter.io/ios/app/checker/id6821827275)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を消す | $2.99 | one-time |


## Frequently asked questions

### Is LearnSousyo2 byNSDev free?

LearnSousyo2 byNSDev is free to download, with no in-app purchases.

### Is 和暦checker free?

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

### Do LearnSousyo2 byNSDev or 和暦checker have ads?

和暦checker shows ads; LearnSousyo2 byNSDev does not.

### Which is updated more often, LearnSousyo2 byNSDev or 和暦checker?

LearnSousyo2 byNSDev ships an update every 5 months, and 和暦checker every 4 days. Most recently, LearnSousyo2 byNSDev was updated on November 11, 2026 and 和暦checker on November 6, 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.*