Comparison

Robo Flags. vs 英語勉強

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

Head to head

About

Robo Flags.

Features

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Learn national flags in the world. There are a different countries in the world. Symbol that represents each country, it is the national flag. You can see the national flags in Olympic games. National flags are colorful and simple. But there, thought of people living in the country is in. Be interested? Let's start right away.

About

英語勉強

Features

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幼稚園児・保育園児・小学1年生~小学3年生向けの英語入門学習アプリです。【勉強モード】まずは音声とイラストでわかりやすく1~100のアルファベットを勉強します。【チャレンジモード】勉強モードで学習した知識を元に数々の問題を解き、各ドリルで満点を取ることで、金メダルを獲得しましょう。テストは1~100までの数字に対する読み方を4択問題式で解く問題が出題されます。可愛い雰囲気とイラストで楽しく勉強できます。

Screenshots

Robo Flags.4 screens

英語勉強4 screens

Verdict

The call

The clearest difference is price: Robo Flags. at Free against 英語勉強's $0.99. Robo Flags. also leads on update cadence (every 4 months vs every 38 months). 英語勉強's advantage is ads (none vs shown) and iOS requirement (9.0 vs 15.0). On in-app purchases 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

Robo Flags. is free to download; 英語勉強 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Robo Flags. ships an update every 4 months, 英語勉強 every 38 months. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 2 level

Robo Flags. versus 英語勉強: the parameters behind the verdict, then further details
Parameter	Robo Flags.	英語勉強
Price	Free — better	$0.99
Update frequency	Every 4 months — better	Every 38 months
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0	9.0 — better
Further details — not scored
Size	59 MB	13 MB
Age rating	4+	4+
Developer	MASAHIRO MIZUTANI	Junpei Shimotsu

In-app purchases

None

Robo Flags.

No in-app purchases

None

英語勉強

No in-app purchases

Questions

Is Robo Flags. free?

Robo Flags. is free to download, with no in-app purchases.

Is 英語勉強 free?

英語勉強 costs $0.99, with no in-app purchases.

Do Robo Flags. or 英語勉強 have ads?

Robo Flags. shows ads; 英語勉強 does not.

Which is updated more often, Robo Flags. or 英語勉強?

Robo Flags. ships an update every 4 months, and 英語勉強 every 38 months. Most recently, Robo Flags. was updated on October 2, 2026 and 英語勉強 on October 15, 2026.