LanguageCoach

An iPhone app that finds your language mistakes in recorded conversations

LanguageCoach records the conversations you hold in the language you are learning. Speech is transcribed on your device, then each sentence comes back with what was wrong, what the correct version is, and why. You do not set aside time to practise; you record the meeting or the chat you were having anyway.

Download on the App Store

iPhone, iOS 17 or later. The free tier records 5 minutes a day.

LanguageCoach report: sentence-by-sentence mistakes and corrections

How it works

  1. Recording screen with waveform and timer

    1. You record while you speak

    A meeting, a phone call or an everyday conversation. You start the recording and carry on talking. It keeps running in the background.

  2. Transcript shown before it is sent for analysis

    2. Speech is transcribed on your device

    The audio does not leave your phone while it is turned into text. You see the resulting text before anything is sent for analysis.

  3. Report screen with corrections grouped by error type

    3. Mistakes are listed sentence by sentence

    Each one shows what you said, the corrected version and a short explanation. You can hear the corrected sentence read aloud in the target language. Mistakes are grouped by type: grammar, word choice, pronunciation.

Only your own speech is analysed

The first time you use it you read one sentence aloud so the app learns your voice. If someone else speaks during a recording, their speech is filtered out and only your sentences reach the report. So when you record a two-way conversation, the other person's mistakes do not end up in your results.

Your audio never leaves the device

Transcription happens entirely on your phone. The raw recording is never uploaded and never stored anywhere. Only the resulting text reaches the server, and you can delete that from the app at any time. Deleting your account removes everything held on the server.

Voice enrollment screen

Who uses it

In speaking classes and exams

Students: see every mistake when the class ends

You start a recording as you walk into a speaking club or a conversation class. When it ends, every mistake you made in that hour is listed sentence by sentence. A teacher cannot stop and correct each one during the lesson; the ones nobody corrected show up here too. Only your own speech is analysed, so the other students' sentences do not end up in your report.

Teachers: pull out a student's mistakes in a speaking exam

Before the exam you enroll the student's voice, then record the conversation. The report contains only the student's sentences — your questions are filtered out. You are not taking notes while you examine; the list of mistakes, their corrections and short explanations arrive afterwards. The app does not assign a grade; the judgement stays with you.

Report from a recorded lesson, with corrections
Progress screen with error breakdown and weekly note

You see which mistakes you repeat

Every analysis is kept in your history. You get a breakdown by error type, a speaking score and a weekly progress note, so you see the recurring mistakes rather than isolated ones.

Languages

Free and Premium

Screens from the app

Frequently asked questions

Is my audio sent to a server?

No. Speech is turned into text on the device and only that text is sent. The raw recording never leaves your phone.

Do I need an internet connection?

Recording and transcription work offline. Analysing the text needs a connection.

Which devices does it run on?

iPhones running iOS 17 or later. There is no iPad or Mac version yet.

Is the other person's speech analysed too?

No. Once you have enrolled your voice, other speakers in the recording are filtered out and the report contains only your sentences.

Can I try it without an account?

Yes, you get one trial without signing in. Signing in with Apple is needed to keep your analyses and to get a daily allowance.

How do I cancel the subscription?

In the subscriptions section of your App Store account settings. Cancel at least 24 hours before the period ends and it will not renew.

Does it understand any language I speak?

It works with the target language you choose. English, German, Turkish and Spanish are supported today.

Download on the App Store

iPhone, iOS 17 or later. The free tier records 5 minutes a day.