A friendly fox chatting on the phone

Turn your everyday ChatGPT conversations into language progress.

FluentSide saves the corrections from the chats you already have, reveals the mistakes you keep making and recommends what to learn next, all in a private dashboard.

Requires a ChatGPT account that can use custom connectors. Coaching happens when ChatGPT calls FluentSide, which isn't guaranteed for every message.

Accepts 34 learning languages

  • Arabic
  • Bulgarian
  • Czech
  • Danish
  • German
  • Greek
  • English
  • Spanish
  • Persian
  • Finnish
  • French
  • Hebrew
  • Hindi
  • Hungarian
  • Indonesian
  • Italian
  • Japanese
  • Korean
  • Malay
  • Dutch
  • Norwegian
  • Polish
  • Portuguese
  • Romanian
  • Russian
  • Swedish
  • Swahili
  • Thai
  • Filipino
  • Turkish
  • Ukrainian
  • Urdu
  • Vietnamese
  • Chinese

Explanations come in the language you choose. Correction quality can vary by language.

More than a red pen

ChatGPT corrects your sentence, explains the rule in your language and sends it to FluentSide. FluentSide keeps the record and shows you what to work on next.

Corrections in ChatGPT

Get corrected without leaving the chat

ChatGPT answers normally, then adds the corrected sentence and a one-line explanation.

Grammar vs. style

Know what's wrong and what's optional

Grammar and spelling mistakes are kept apart from style suggestions, dialect and informal writing.

Daily plan

Get a short lesson plan every day

Up to three reviewed web lessons and three videos, picked from a curated catalog for your recurring mistakes.

Recurring mistakes

See the mistakes you keep making

Every correction is grouped by category, so the patterns behind your mistakes become visible.

Your level

Illustration: a fox climbing a staircase of levels

Keep the level you chose

Your level stays self-reported. FluentSide never guesses a level from a count of mistakes.

Languages

Learn one language, get explanations in another

Choose the language you're improving, or let it be detected, and the language explanations should use.

History

Search and filter your history

Filter saved corrections by language, date and category, and delete any entry whenever you want.

Streaks and goals

Build a habit that counts

Set a weekly goal. A day counts when you save a correction or complete a lesson. Streaks measure activity, not proficiency.

Getting started is simple

  1. Illustration: a fox holding two speech bubbles
    01

    Set your languages

    Choose the language you're improving (or let it be detected) and the language explanations should use.

  2. Illustration: a fox connecting a laptop to a chat
    02

    Connect ChatGPT

    Add FluentSide as a connector. When you write with mistakes, ChatGPT answers normally, then adds a short correction.

  3. Illustration: a fox reading a checklist
    03

    Learn from your own mistakes

    Your dashboard groups recurring mistakes and suggests a few reviewed lessons each day.

Honest numbers, private by design

Learning languages accepted
34
Interface languages
18
To remove expired sentences
<24 hours
Full conversations stored
0

Honest reports

A dashboard that doesn't exaggerate

FluentSide only sees the sentences ChatGPT sends it. So it shows what that evidence supports: which mistakes recur, how active you've been, and which lessons you completed. Your level stays the one you chose until an assessment suggests otherwise.

ChatGPT

A French learner after two weeks (illustration)

Example data

Top recurring mistake

Articles7 times in 30 days

Je suis allé au réunion hier.

Je suis allé à la réunion hier.

“Réunion” is feminine, so “à + la” stays “à la” (not “au”).

Recommended lesson

Articles in French

Lingolia · lingolia.com

ArticlesArticles appeared in 7 sentences in your last 30 days of corrections.

Recent activity

12 corrected sentences this week

Completed lessons

  • Prepositions in FrenchCompleted
  • Indicative Tenses in FrenchCompleted

Next useful action

Read “Articles in French”, then mark it complete. Tomorrow's suggestions adapt to what still recurs.

Who is FluentSide for?

For professionals

Write emails, reports and messages in another language at work, and learn from the corrections along the way.

For students

Turn homework and writing practice in ChatGPT into a record of what to review next.

For multilingual writers

Mix languages freely. Deliberate multilingual writing, slang and dialect are never counted as mistakes.

Your questions, answered

Everything you need to know before you connect ChatGPT.

No. FluentSide only receives the sentences ChatGPT corrected, with the correction and a short explanation. Full conversations, ChatGPT’s answers and correct sentences are never stored.

Start with the writing you already do.

Connect ChatGPT, keep writing as usual, and let FluentSide turn your corrections into progress you can see.