# AOBA放大 vs 歴代天皇おぼえまSHOW！

The clearest difference is in-app purchases: AOBA放大 at none against 歴代天皇おぼえまSHOW！'s 1. AOBA放大 also leads on ads (none vs shown) and iOS requirement (11.0 vs 14.5). 歴代天皇おぼえまSHOW！'s advantage is update cadence (daily vs every 3 months). On price and device support there is nothing between them.

Both are free to download. 歴代天皇おぼえまSHOW！ sells 1 one-off in-app purchase. AOBA放大 asks for nothing beyond the download.

AOBA放大 ships an update every 3 months, 歴代天皇おぼえまSHOW！ daily. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | AOBA放大 | 歴代天皇おぼえまSHOW！ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 14 MB |
| Requires iOS | **11.0** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [THE OPEN UNIVERSITY OF JAPAN](https://appshunter.io/developer/1634369822) | [Akira Fujisawa](https://appshunter.io/developer/1533514621) |

## What reviewers say

### AOBA放大

[App page](https://appshunter.io/ios/app/aoba/id1634369820)

**Features:** macOS Compatibility

**In-app purchases:** none


### 歴代天皇おぼえまSHOW！

[App page](https://appshunter.io/ios/app/show/id1668527121)

This app helps users memorize the names of past emperors. It's primarily designed for students preparing for exams but is also useful for anyone wanting to acquire general knowledge. Various modes are available to suit different learning styles.

**Highlights:** Memorize past emperors, Targeted for exam preparation, Acquire general knowledge, Multiple learning modes, Error correction reporting

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |


## Frequently asked questions

### Is AOBA放大 free?

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

### Is 歴代天皇おぼえまSHOW！ free?

歴代天皇おぼえまSHOW！ is free to download, with in-app purchases available.

### Do AOBA放大 or 歴代天皇おぼえまSHOW！ have ads?

歴代天皇おぼえまSHOW！ shows ads; AOBA放大 does not.

### Which is updated more often, AOBA放大 or 歴代天皇おぼえまSHOW！?

AOBA放大 ships an update every 3 months, and 歴代天皇おぼえまSHOW！ daily. Most recently, AOBA放大 was updated on October 4, 2026 and 歴代天皇おぼえまSHOW！ on October 14, 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.*