Comparison

Stardust 英会話 vs Lockeigo

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
Read full description

「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

Lockeigo

Enhance your English vocabulary by learning new expressions directly from your iPhone's lock screen. Create custom flashcards, organize them into folders, and receive personalized review reminders. Unlock advanced features and customization options with a subscription.

Highlights
  • Create custom English flashcards
  • Organize vocabulary into folders
  • Display cards in Live Activities and widgets
  • Personalized review reminders
  • Customizable themes and fonts
  • Search words, meanings, and examples
Features
Read full description

Lockeigo is an iPhone vocabulary app that helps you recall useful English expressions from your Lock Screen. KEY FEATURES • Create cards with English, a translation, and an optional example • Search words, meanings, and examples • Organize folders and export or import JSON • Show one to four cards in Live Activities and widgets • Sort reviews with Again and Got It • Choose themes, fonts, text sizes, and presentation styles • Set optional review reminders Lockeigo Plus unlocks unlimited cards, nested folders, more themes and fonts, custom colors, longer review sessions, detailed insights, and custom reminders. Monthly and annual plans unlock the same Plus features. Price, duration, and any eligible trial are shown before purchase. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends and can be managed in Apple Account settings. No account or cloud sync is required. Cards and learning history stay on your device. Only when you explicitly start Lock Screen display, the lesson data, display settings, ActivityKit token, and App Attest information required for the Live Activity are processed through Microsoft Azure Japan East and APNs. Free users may see ads in eligible app areas, never on the Lock Screen, in Live Activities, Dynamic Island, widgets, notifications, review cards, or Plus screens. Support: https://lockeigo-public.pages.dev/support.html Privacy: https://lockeigo-public.pages.dev/privacy.html Terms: https://lockeigo-public.pages.dev/terms.html Seller: https://lockeigo-public.pages.dev/commercial-transactions.html Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Stardust 英会話4 screens
Lockeigo4 screens

Verdict

The call

The clearest difference is in-app purchases: Lockeigo at none against Stardust 英会話's 1. Lockeigo also leads on update cadence (every 2 days vs weekly). Stardust 英会話's advantage is ads (none vs shown). On price, review sentiment, monetization model 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. Lockeigo asks for nothing beyond the download.

UpkeepUpdate frequency

Stardust 英会話 ships an update weekly, Lockeigo every 2 days. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 5 level
Stardust 英会話 versus Lockeigo: the parameters behind the verdict, then further details
ParameterStardust 英会話Lockeigo
PriceFreeFree
Positive reviews100.0% of reviews100.0% of reviews
Update frequencyWeeklyEvery 2 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.1 — better17.0
Further details — not scored
Size49 MB22 MB
Age rating4+4+
DeveloperShuto Gotoyohei ueda

Customer experience

Stardust 英会話

Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Lockeigo

Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Stardust 英会話

One-time1
  • 全ての機能を使用可能$6.99
None

Lockeigo

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 Lockeigo free?
Lockeigo is free to download, with no in-app purchases.
Do Stardust 英会話 or Lockeigo have ads?
Lockeigo shows ads; Stardust 英会話 does not.
Which is updated more often, Stardust 英会話 or Lockeigo?
Stardust 英会話 ships an update weekly, and Lockeigo every 2 days. Most recently, Stardust 英会話 was updated on October 15, 2026 and Lockeigo on October 24, 2026.

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