Comparison

AOBA放大 vs 歴代天皇おぼえまSHOW！

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

AOBA放大

Features

Read full description

放送大学次世代教育研究開発センターが実験的に提供している、一般の方向けのアプリです。公開授業科目やYouTubeチャンネルなど、よく利用する項目にアクセスできます。このアプリは2026年度に提供を停止する予定です。

About

歴代天皇おぼえまSHOW！

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

Read full description

歴代の天皇陛下を覚えるアプリです。基本的に受験生向けですが雑学知識を身に着けたい方もご利用頂ければと思います。様々なモードを搭載しておりますので、自分に合った覚え方で活用してみてください。間違えがあればすぐに修正致しますのでお手数ではございますがご連絡ください。引用元：炉辺談話より「https://genryu.org/tanaka/rohen/rohen523.pdf」

Screenshots

AOBA放大3 screens

歴代天皇おぼえまSHOW！4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 4 level

AOBA放大 versus 歴代天皇おぼえまSHOW！: the parameters behind the verdict, then further details
Parameter	AOBA放大	歴代天皇おぼえまSHOW！
Price	Free	Free
Positive reviews	—	100.0% of reviews
Update frequency	Every 3 months	Daily — better
Ads	No — better	Yes
In-app purchases	No — better	Yes
Monetization	—	Free with in-app purchases
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	11.0 — better	14.5
Further details — not scored
Size	35 MB	14 MB
Age rating	4+	4+
Developer	THE OPEN UNIVERSITY OF JAPAN	Akira Fujisawa

In-app purchases

None

AOBA放大

No in-app purchases

1 purchases

歴代天皇おぼえまSHOW！

One-time1

広告非表示$2.99

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.