# 皇室典範~皇室の知識を身につけよう~ vs 日本国憲法

The clearest difference is in-app purchases: 皇室典範~皇室の知識を身につけよう~ at none against 日本国憲法's 1. 皇室典範~皇室の知識を身につけよう~ also leads on iOS requirement (6.0 vs 17.0). 日本国憲法's advantage is update cadence (fortnightly vs every 10 months). On price, ads and device support there is nothing between them.

Both are free to download. 日本国憲法 sells 1 one-off in-app purchase. 皇室典範~皇室の知識を身につけよう~ asks for nothing beyond the download.

皇室典範~皇室の知識を身につけよう~ ships an update every 10 months, 日本国憲法 fortnightly. The most recent releases landed on October 6, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 皇室典範~皇室の知識を身につけよう~ | 日本国憲法 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takaaki Sasaki](https://appshunter.io/developer/525616408) | [Michiaki FUJIKAKE](https://appshunter.io/developer/1787375652) |

## What reviewers say

### 皇室典範~皇室の知識を身につけよう~

[App page](https://appshunter.io/ios/app/id577708540)

**Features:** macOS Compatibility

**In-app purchases:** none


### 日本国憲法

[App page](https://appshunter.io/ios/app/id6739873331)

This app provides easy access to the Japanese Constitution, both old and new. Designed for simplicity and readability on mobile devices, it offers a clean interface without ads. Users can suggest improvements to help shape its future development.

**Highlights:** Access to old and new Japanese Constitutions, Simple, single-screen display of articles, Optimized readability for mobile screens, Ad-free experience, User feedback for future development

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 作者に缶コーヒー代を送る | $0.99 | one-time |


## Frequently asked questions

### Is 皇室典範~皇室の知識を身につけよう~ free?

皇室典範~皇室の知識を身につけよう~ is free to download, with no in-app purchases.

### Is 日本国憲法 free?

日本国憲法 is free to download, with in-app purchases available.

### Do 皇室典範~皇室の知識を身につけよう~ or 日本国憲法 have ads?

Neither 皇室典範~皇室の知識を身につけよう~ nor 日本国憲法 shows ads.

### Which is updated more often, 皇室典範~皇室の知識を身につけよう~ or 日本国憲法?

皇室典範~皇室の知識を身につけよう~ ships an update every 10 months, and 日本国憲法 fortnightly. Most recently, 皇室典範~皇室の知識を身につけよう~ was updated on October 6, 2026 and 日本国憲法 on October 21, 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.*