Language Diary: LangJournal

Language Diary: LangJournal

AI Writing & Corrections

27 ratings
28 reviews
Free
In-App Purchases

Details

Released
April 25, 2023
Updated
November 6, 2026

Features

Language Diary: LangJournal screenshot #1 for iPhone
Language Diary: LangJournal screenshot #2 for iPhone
Language Diary: LangJournal screenshot #3 for iPhone
Language Diary: LangJournal screenshot #4 for iPhone
Language Diary: LangJournal screenshot #5 for iPhone
Language Diary: LangJournal screenshot #6 for iPhone
Language Diary: LangJournal screenshot #7 for iPhone
Language Diary: LangJournal screenshot #8 for iPhone
Language Diary: LangJournal screenshot #9 for iPhone
Language Diary: LangJournal screenshot #10 for iPhone
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About

Practice a new language by writing a daily diary. AI provides corrections, explanations, and follow-up questions to improve your grammar and natural expression. Engage in AI chats and review exercises to reinforce learning and track progress.

✓AI diary corrections and explanations
✓Ask AI questions about writing
✓Review exercises based on mistakes
✓Weekly progress reports
✓CEFR level analysis for English
✓Chat with AI characters
✓Support for 13 languages
✓Share diaries with teams
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+3

What's New in Language Diary

7.12.2

November 6, 2026

- Preview your journal post before sharing and manage its public link from the same screen. - On iOS, journal and other writing fields can open the keyboard in the language you'll write in. - Premium is now the only plan offered to new subscribers. Existing CEFR+ subscribers can continue using their plan.

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Subscriptions & In-App Purchases

Premium Monthly Subscription

Premium Monthly Subscription

$4.991 Month
7 Days trial
Price Updates
November 7, 2026→$4.99
April 15, 2026→$7.99
July 5, 2024→$2.99
How to cancel Language Diary subscription ⁉️

User reviews

Great for developing natural writing!

I have been using this app most days and have found that my natural understanding of German grammar is improving. I learn new vocabulary from each response and really appreciate the explanations for each correction. Having the option to see my sentences rewritten in a more natural way is a bonus. Great app!
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添削が微妙です。

実際に使える英語なのに、まるで答えが一個しかないみたいな固定返答が多くて上から目線でイライラします。英語は"こういう言い回し表現もある"というのが個人で違うのが普通なんですよ?通じれば問題ないわけです。それを自然じゃない!間違ってる!という決めつけ添削はいただけないので、サブスク契約するのはやめました。実際にアメリカ人とLINEでやりとりしているタイプからするとこういうアプリはストレスが溜まる。

Response from developer

レビューありがとうございます。 添削が断定的で、押しつけがましく感じられるものになってしまい申し訳ありません。 ご指摘の通り、英語には通じる表現や言い回しの幅があります。 今後は、正解を押しつけるのではなく、表現の一例として伝えられるよう改善してまいります。

Ad close button not working

I really like the app, but the ad close button is not working.
I cannot dismiss ads on both iPhone and iPad, and it forces me to restart the app.
とても良いアプリだと思っていますが、広告の閉じるボタンが機能しません。
iPhoneとiPadの両方で発生しており、広告を閉じることができずアプリを再起動する必要があります。

Response from developer

Sorry for the inconvenience. Could you please try again and check whether the issue happens again? If it does, please contact us through the in-app Inquiry form and tell us your device model (for example, iPhone X or iPhone 15).

オススメされていれました。

知人からオススメされてほぼ毎日使っています。日記やチャットだけでなく、和文英訳も出来て嬉しいです。AIがすぐに添削してくれるため文法の間違いや単語のミスにすぐ気づくことが出来ます。
辞書があり、分からない単語があるとすぐに調べることができるのもありがたいです。
ですが今朝からなぜか添削ができなくなってしまい、確認するとチームのトーク履歴や、学習履歴が消えてしまいました。何もできません。悲しいです。

Response from developer

ご不便をおかけして申し訳ありません。 履歴が見えない・添削できない場合、ログイン状態の問題で発生することがあります。 お手数ですが、一度ログアウトして再ログインをお試しください。 改善しない場合は、確認しますのでご連絡ください。

習慣化に最適!

韓国語学習を始めて2年半、何度も日記にチャレンジしたけど習慣化出来なかった。
なのに、このアプリで習慣化成功!👏
アプリ内でチャッピーに添削してもらえる機能が本当にいい👍
初学の頃にこのアプリを見つけたかった。

Response from developer

レビューをお寄せいただき、ありがとうございます。コメント非常に励みになります。今後も学習を続けやすい体験を提供できるよう、改善を重ねてまいります。引き続きよろしくお願いいたします。

Developer apps

FAQ

How does LangJournal help me learn a language?

LangJournal helps you learn by keeping a diary in your target language. AI provides instant corrections, detailed explanations for those corrections, and offers follow-up questions to deepen your understanding and encourage natural expression.

What languages does LangJournal support?

LangJournal supports learning in 13 languages, including English, Korean, Japanese, Chinese, Spanish, German, French, Italian, Portuguese, Dutch, Polish, Swedish, and Tagalog.

Can I ask LangJournal questions about my writing?

Yes, you can ask AI direct questions about your diary entries. This allows you to clarify grammar, understand nuances, explore alternative phrasing, and learn more natural ways to express yourself.

Does LangJournal offer ways to review my mistakes?

Yes, LangJournal includes review exercises based on your diary corrections. This feature helps you practice reducing repeated mistakes and reinforces what you've learned, aiding in long-term retention.

What are the subscription options for LangJournal?

LangJournal offers Premium and Pro subscription plans, available monthly and yearly. These plans include a 7-day free trial. There is also a CEFR+ Monthly Subscription available.

How does LangJournal track my progress?

LangJournal provides weekly reports that summarize your diary entries, AI chats, and vocabulary usage. It also tracks your practice days, helping you build a consistent learning habit and monitor your development.

Is LangJournal suitable for beginners?

Yes, LangJournal is recommended for learners who want to develop natural expressions. You can start with short sentences and gradually build your grammar, vocabulary, and range of expressions as you become more comfortable.

What is the CEFR Analysis feature in LangJournal?

The CEFR Analysis feature, currently for English learners, assesses your diary entries against CEFR levels. It provides an indication of your English proficiency, with breakdowns in vocabulary, grammar, and verb forms.