Comparison

Stardust 英会話 vs mugenStudyToeic

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

Head to head

About

Stardust 英会話

Learn natural, everyday English phrases that are commonly used by native speakers but not typically taught in schools. Overcome the frustration of not understanding simple words due to idiomatic expressions and gain confidence in your conversational skills.

Highlights

Learn native English phrases
Master idiomatic expressions
Improve daily conversation
Gain speaking confidence
Understand natural speech

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「簡単な単語だけなのに意味が理解できない」という経験ありませんか？それは、直訳できない「決まり文句やお決まりのセリフ」だからです。ネイティブはそんな決まり文句を口癖のように使っています。このアプリでは、そんな学校や教科書では学べないネイティブが本当に使う英会話フレーズを学ぶことができます。突然の質問に「Yes」や「No」しか出ない自分を卒業して、自然でカッコイイ日常英会話を手に入れよう！

About

mugenStudyToeic

Features

Read full description

TOEIC 対策向けの語彙学習アプリ「MUGEN STUDY」。NGSL（TOEIC語彙の約92%をカバー）をベースに、AI生成の短い例文とともに四択クイズで学習します。

Screenshots

Stardust 英会話4 screens

mugenStudyToeic3 screens

Verdict

The call

The clearest difference is in-app purchases: mugenStudyToeic at none against Stardust 英会話's 1. Stardust 英会話's advantage is iOS requirement (16.1 vs 26.0). On price, update cadence, ads 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. Stardust 英会話 sells 1 one-off in-app purchase. mugenStudyToeic asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 6 level

Stardust 英会話 versus mugenStudyToeic: the parameters behind the verdict, then further details
Parameter	Stardust 英会話	mugenStudyToeic
Price	Free	Free
Positive reviews	100.0% of reviews	—
Update frequency	Weekly	Weekly
Ads	No	No
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	—
Devices	iPhone, iPad — better	iPhone
Requires iOS	16.1 — better	26.0
Further details — not scored
Size	49 MB	30 MB
Age rating	4+	17+
Developer	Shuto Goto	RYOTA SAITO

In-app purchases

1 purchases

Stardust 英会話

One-time1

全ての機能を使用可能$6.99

None

mugenStudyToeic

No in-app purchases

Questions

Is Stardust 英会話 free?

Stardust 英会話 is free to download, with in-app purchases available.

Is mugenStudyToeic free?

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

Do Stardust 英会話 or mugenStudyToeic have ads?

Neither Stardust 英会話 nor mugenStudyToeic shows ads.

Which is updated more often, Stardust 英会話 or mugenStudyToeic?

Stardust 英会話 ships an update weekly, and mugenStudyToeic weekly. Most recently, Stardust 英会話 was updated on October 15, 2026 and mugenStudyToeic on October 3, 2026.