KalliBeta

AI pronunciation and grammar coach for non-native English speakers

Speak freely. Kalli will help you get it right.

When your friends and coworkers won’t correct your English, Kalli will. Just talk, and she’ll listen for your grammar and pronunciation.

Free:
5 minutes of live practice a day. No credit card required.
Kalli Unlimited:
Regular price $19.99 Founding price $11.99 CAD/month, locked in for the first 100 sign-ups.
Example: how Kalli corrects you
You said:

Yesterday I have went to the market with my sister.

Kalli said:

Oh nice, you went to the market yesterday! What did you buy?

Kalli says it the right way in her reply, then keeps the conversation going.

  • 1. Try “went”Verb tense/aspect
    You said
    have went
    Try
    went
    Why
    Use the simple past for a completed time, such as “yesterday”.

What Kalli listens for

Pronunciation: the sounds and word stress that speakers of your first language often find hard. For example, “very” can sound like “berry”, or the last sound of “played” can drop away.

Grammar: verb tense, articles, prepositions, word order, plurals, pronouns, and subject–verb agreement.

Your patterns: Kalli remembers the mistakes you repeat, so you know what to practice next.

Your meetings: upload a recording of a meeting, call, or presentation, and Kalli marks what to try in your own speech.

Questions

Is Kalli free?
Yes. 5 minutes of live practice a day. No credit card required. Kalli Unlimited removes the daily limit.
Which native languages does Kalli know?
She has specific tips for Spanish, Mandarin Chinese, Vietnamese, Korean, Arabic, Hindi, Portuguese, and French speakers, and works for speakers of any other language too.
Do I need to install anything?
No. Kalli runs in your browser. You need a microphone.
Is Kalli an accent reduction app?
No. She doesn’t try to get rid of your accent. Your accent isn’t the problem. Not knowing what to fix is. Kalli helps you speak clearly by pointing out the sounds and words that make you harder to understand.
What happens to my recordings?
Kalli keeps only short audio clips of the moments she corrects, so you can hear them again. Clips and any audio you upload are deleted after 90 days unless you bookmark them.

Kalli is an early beta and could have a few bugs. If something feels off, use the Feedback button at the top of the app to tell us.