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Airffic Learn

Languages

Write a sentence; AI corrects it and explains why.

The app below is currently in Japanese. An English interface is on the roadmap; everything you enter stays on your device until you sign in.

書いてみる

英語・中級として見ます（「設定」で変えられます）。間違っていていい。直して、なぜ直したかを説明します。

直したもの

例こう出ます

入力：I have been to Osaka last week and it was very fun.

直した文：I went to Osaka last week, and it was a lot of fun. なぜ ・"last week" のように時が決まっているときは現在完了（have been）ではなく過去形（went） ・"very fun" は口語では通じますが、書き言葉では "a lot of fun" か "really fun" が自然 ・二つの文をつなぐ and の前にコンマ もう一段上げるなら：I took a trip to Osaka last week and had a great time.

出力の形を示す例です。実際の答えは、書いた内容で変わります。

What Airffic Learn is

What moves a language forward is not hours spent reading textbooks but the number of times you write something and have it corrected. In Airffic Learn you write a sentence, AI corrects it and explains why. English, Chinese, Korean, and others. Being wrong is fine; what teaches you is the reason for the correction, kept where you can see it.

You get three things back: the corrected sentence, the reason, and a more polished version. Corrections are kept in a history, so the mistakes you keep making become visible. For memorizing words and phrases there is Airffic Cards; for exam questions, Airffic Exam.

Corrections are made by Anthropic's Claude, and the explanations are currently written in Japanese, so the app is best suited to Japanese speakers learning another language today. Signed in, your sentences are saved to your account on the same foundation as your other Airffic records. There is no conversation practice and no pronunciation scoring. The app itself is currently in Japanese; an English interface is on the roadmap.

How to use it

  1. 1WriteSay what you mean, in the language you are learning. A sentence or a paragraph.
  2. 2Get it correctedPress "correct". The corrected sentence and the explanation appear.
  3. 3Review the historyCorrected sentences stay on the right. Look back at what you got wrong before.

Questions

Which languages are supported?
English, Chinese, Korean, French, Spanish, German and the other major languages the AI handles. Explanations are currently returned in Japanese.
Can I practice conversation?
No. It is limited to correcting written sentences. There is no pronunciation or listening assessment.
Are my sentences saved?
If you are signed in, they are saved to your account together with the correction and can be reviewed as history. Not signed in, nothing is saved.
Do I need to sign in?
Only for the AI correction. Writing works without signing in.

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