Comparison

ぼくらの瞬間英作文 vs Language Diary

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

Head to head
About

ぼくらの瞬間英作文

Improve your spoken English with daily sentence-building exercises and AI-powered feedback. Learn grammar and practice constructing natural-sounding English phrases in just five minutes a day.

Highlights
  • 2000+ sentence-building exercises
  • AI English feedback and suggestions
  • Step-by-step learning method
  • Comprehensive grammar for conversation
  • Daily updated practice sentences
  • Focus on speaking fluency
Features
Read full description

\ 祝!50,000ダウンロード達成 / 「英語がなかなか口から出てこない..」そんな悩みを解決するアプリです。 「文法を学ぶ」→「その文法で英語を話す」 2ステップで、言えることがどんどん増えていきます! ◆ 特徴 ・無料で学べる、基礎文法500問。 ・有料プランでは、応用英文やビジネスシーンで使える英文など、合計3,200問以上が学べます。 ・あなたの苦手な文法を分析し、おすすめのトレーニングを提案します。 ・AIがあなたの英文を添削して、自然な英語表現をフィードバックします。 ・300名以上を指導してきた英語コーチが開発。自分のコーチングで使うために作り、今も現場で毎日使われています。 ■「使える文法」を増やす! 瞬間英作文は、短い英文を瞬間的に作るトレーニングです。 文法を「知っている」状態では、なかなか英語を話すことはできません。 学んだ文法を使って、英文を組み立てるトレーニングを積むことで、英語がスラスラ口から出てくるようになります。 ■ 無料ですべての文法が学べる! 基礎問題 500問については、無料プランでも学習可能です。 使っていただいて、「もっと英語を使いこなせるようにしたい」「ビジネスシーンでも使える英文を学びたい」と感じていただいたら、有料プランを検討いただけると幸いです。 ■苦手な文法を分析。専用のトレーニングメニュー 学習を進めることで、あなたの苦手な文法を分析し、最適なトレーニング内容を提案します。 すでに使える文法はほどほどに。苦手な文法を中心的に学習することで、効率的にスピーキング力を伸ばすことができます。 ■ AIがあなたの英文を添削・フィードバック AIがあなたの英文を瞬時に添削し、フィードバックを返します。 文法ミスの指摘だけでなく、「より自然な言い回し」までをアドバイスします。 ■「話すための英文法」を総まとめ! 「ぼくらの瞬間英作文」には、英会話に必要な文法が全てまとめられています。 1チャプターあたり約3分 ~ 5分で読めて、場所を選ばずに学習できます。 もう、ぶ厚い文法書を読む必要はありません! 英語のやり直し・学び直し、独学での英会話学習、TOEIC対策の基礎固めに。 まずは無料の基礎文法500問からお試しください。

About

Language Diary

This app helps you improve language skills by writing a diary with AI-powered corrections for grammar, vocabulary, and syntax. It also offers peer collaboration, AI chat practice, and CEFR level evaluations to enhance your learning journey.

Highlights
  • AI-powered diary corrections
  • Chat and conversation with AI
  • Peer collaboration in teams
  • CEFR level evaluation
  • Voice recording for pronunciation
  • Attach images/videos to entries
  • Passcode lock for privacy
Features
Read full description

LangJournal helps you learn a language by keeping a diary, with AI corrections, explanations, follow-up questions, and review exercises. Write about your day in the language you're learning. AI checks grammar and unnatural expressions and helps you make your writing clearer and more natural. Each correction comes with an explanation, so you can understand why a change is needed and develop your writing skills. When you're unsure about an expression, you can ask AI directly. Ask questions about your diary, such as "Does this sound natural?", "What's the difference between 'the' and 'a'?", or "How can I say this more casually?" Keeping a diary is a way to practice writing and build a daily habit of using the language. Start with one short sentence and gradually build your grammar, vocabulary, and range of expressions. [Key Features] ■ Write a Diary With AI Corrections AI checks your diary as soon as you submit it. Get help with grammar, vocabulary, and unnatural expressions to make your writing more natural. ■ Understand Why a Correction Is Needed See why each corrected part needs to change. Review your writing with explanations, rather than just looking at the corrected answer. ■ Ask AI About Your Diary Ask AI any questions you still have after a correction. Explore nuances, grammar, alternative wording, and more natural ways to express yourself. ■ Review Your Mistakes Review by writing sentences in exercises based on corrections from your diary. Practice reducing repeated mistakes and reinforcing what you've learned. ■ Look Back With Weekly Reports Review your diary entries, AI chats, words used, and words used for the first time each week. See how many days you've practiced and how much you've done to help build a learning habit. ■ Check Your English Level With CEFR Analysis Analyze your diary against CEFR levels to get an indication of your English proficiency. See an overall assessment and breakdowns covering vocabulary, grammar, and verb forms. This feature is currently available for English learners. ■ Learn by Chatting With AI Characters Talk with AI characters such as Zena, Zeb, Leon, and Mari by text or voice. Build on topics from your diary or discuss a topic you enjoy to get more practice using the language. ■ Learn in 13 Languages Study English, Korean, Japanese, Chinese, Spanish, German, French, Italian, Portuguese, Dutch, Polish, Swedish, or Tagalog. ■ Share Diaries With a Team Join a team to share diary entries and exchange comments with others learning the same language. Learning together can help you keep going when it's hard to stay consistent on your own. This feature is currently available for learners of English, German, and Korean. ■ Get Daily Support From Zena Zena supports you with comments based on your learning activity. Start with a short diary entry and find encouragement to keep learning each day. [Recommended For] ■ Learners who want to develop natural expressions by keeping a diary ■ People who want to practice writing with AI corrections ■ Learners who want to understand their mistakes and avoid repeating them ■ People who want to learn at their own pace while asking AI questions ■ Learners who want more opportunities to use the language every day ■ People who find it hard to stay consistent alone and want to enjoy learning languages

Screenshots

ぼくらの瞬間英作文4 screens
Language Diary4 screens

Verdict

The call

The clearest difference is rating: ぼくらの瞬間英作文 at 5.0 against Language Diary's 4.4. Language Diary's advantage is review sentiment (89% vs 74%) and ratings volume (27 vs 2). On price, update cadence, ads and in-app purchases 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. ぼくらの瞬間英作文 sells 11 in-app purchases, starting at $2.99 per month and Language Diary sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ぼくらの瞬間英作文 holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Language Diary has 27 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 74% of ぼくらの瞬間英作文's written reviews are positive against 89% of Language Diary's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ぼくらの瞬間英作文 ships an update every 5 days, Language Diary every 3 days. The most recent releases landed on October 18, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
ぼくらの瞬間英作文 versus Language Diary: the parameters behind the verdict, then further details
Parameterぼくらの瞬間英作文Language Diary
PriceFreeFree
Rating5.0 (2 ratings) — better4.4 (27 ratings)
Positive reviews73.9% of reviews88.9% of reviews — better
Number of ratings227 — better
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.616.4 — better
Further details — not scored
Size75 MB100 MB
Age rating4+4+
DeveloperTomonori TakeuchiDaiki Sato

Customer experience

ぼくらの瞬間英作文

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews46 reviews
Positive73.9%
Neutral15.2%
Negative10.9%

Language Diary

All ratings27 ratings
Positive85.2%
Neutral7.4%
Negative7.4%
Written reviews27 reviews
Positive88.9%
Neutral3.7%
Negative7.4%

In-app purchases

11 purchases

ぼくらの瞬間英作文

Subscriptions4
  • AI添削プラス_プレミアムユーザー専用7 Days trial$2.991 Month
  • 1ヶ月プラン$5.991 Month
  • AI添削プラス_年間_プレミアムユーザー専用7 Days trial$19.991 Year
Show 1 more
  • 1年プラン$49.991 Year
One-time7
  • おとなの英作文(追加コンテンツ)$11.99
  • ぼくらの瞬間英作文 プレミアムプラン2 variants$19.99
  • ぼくらの瞬間英作文 プレミアムプラン$20.99
Show 4 more
  • ぼくらの瞬間英作文「プレミアム + 追加コンテンツ」$29.99
  • プレミアムプラス_買い切り_プレミアムユーザー用$29.99
  • ぼくらの瞬間英作文 プレミアムプラン$31.99
  • プレミアムプラス_買い切りプラン$79.99
6 purchases

Language Diary

Subscriptions6
  • Premium Monthly Subscription7 Days trial$4.991 Month
  • Pro Monthly Subscription7 Days trial$5.991 Month
  • CEFR+ Monthly Subscription$8.991 Month
Show 3 more
  • Premium Yearly Subscription7 Days trial$49.991 Year
  • Pro Yearly Subscription7 Days trial$59.991 Year
  • CEFR+ Yearly Subscription$89.991 Year

Questions

Is ぼくらの瞬間英作文 free?
ぼくらの瞬間英作文 is free to download, with in-app purchases available.
Is Language Diary free?
Language Diary is free to download, with in-app purchases available.
Which has better reviews, ぼくらの瞬間英作文 or Language Diary?
ぼくらの瞬間英作文 is rated higher. ぼくらの瞬間英作文 averages 5.0 out of 5 from 2 ratings, while Language Diary averages 4.4 from 27 ratings.
Do ぼくらの瞬間英作文 or Language Diary have ads?
Neither ぼくらの瞬間英作文 nor Language Diary shows ads.
Which is updated more often, ぼくらの瞬間英作文 or Language Diary?
ぼくらの瞬間英作文 ships an update every 5 days, and Language Diary every 3 days. Most recently, ぼくらの瞬間英作文 was updated on October 18, 2026 and Language Diary on October 22, 2026.

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