Guessing what sounds off
AI English speaking coach
Build your rhythm. Master your speech. In weeks. Not years of guesswork.
See how your rhythm differs from your dream voice. Know exactly what to fix—in seconds, not hours.
Coming soon · iOS + Android

Reference voice · 5 sec
I practice with intention, because that's how I can improve much faster than before. Emphasize practice, intention, because, improve and faster. Keep I, how, much and than light. Pause after intention.
- Focus
- Neutral
- Light
- Pause
Emphasize the marked words. Pause at /.
Reference preview · Compare your recording in the app.
Shadow with feedback
Know what to change. Before you repeat.
Compare your stress and pauses with the reference. Work on the differences instead of replaying the whole clip.
Hear the stress and pauses.
Hannah’s reference · what the notes show
Focus
practice · intention
Make your point land.
Light
how · much · than
Break the word-by-word feel.
Pause
intention / because
Give each thought space.
Hear each detail in the original recording.
Then compare your own voice in the app.
Follow the notes.
Compare your recording.
Work on that phrase.
The research behind focused practice
Shadowing can help. The goal here is to make your practice more focused.
Practice with a focus
Hamada & Suzuki explain how shadowing can target stress, rhythm and intonation, and recommend recording and reviewing your performance.
Hamada & Suzuki, 2022Make the pattern visible
In a four-week English intonation study, learners using visual displays improved more than the audio-only training and no-training groups.
Zhi, Li & Zhao, 2024These studies examine teaching methods, not 30Speech. They do not establish that rhythm notes are essential or measure time saved with this app.
Your words. Your chosen voice.
Rehearse for real life.
A presentation. A story. Something you want to say. Turn your script into audio and rhythm notes.
Coming soon · iOS + Android
Custom Rhythm is available on paid plans.
- 01
Paste
- 02
Choose voice
- 03
See rhythm
Your transcriptSample
Maybe being easy to talk to is less about carrying the whole conversation and more about helping it breathe. The best conversations feel like something both people are discovering together, not two performances taking turns. Emphasize Maybe, being, carrying, conversation, helping, breathe, best, conversations, both, two, turns. Keep to, is, the, and, it, The, like, are light. Pause after conversation and helping and breathe and together.
- ✦ Focus
- Neutral
- Light
- / Pause
Tap a note above to see what it does.
Follow the emphasis, light words and pauses.
Master what you say, too
Your ideas. Beyond basic.
Express your own idea with sharper words and details that bring it to life.
One Take · Example
What’s it like working from home?
Your starting point
“Working from home is good. I feel relaxed there.”
Your idea, upgraded
“I feel comfortable working from home. I can work in casual clothes instead of dressing up for the office.”
Keep the phrase. Practice it. Make it yours.
Practice what you need to say.
Memorizing someone else’s answer
One Take + Discussion
Get sharper wording for your own answer.
Practicing words you won’t use
Custom Rhythm
Turn your script into audio + rhythm notes.
Custom scripts and topics are available on paid plans.
Make practice personal.
Work & Career
Daily Life
Relationships
Travel
Money
Technology
Food & Culture
Health & Life
Big Ideas
Your rhythm starts with a voice you love
Find your kind of flow.
Six voices. One script. Hear what feels like you.
See what they’re saying
“Hey, how was your day? Did anything make you smile? Maybe you had a good lunch, talked to a friend, or heard a song you really liked. Tell me about it.”

Polished & poised

Bright & expressive

Gentle & warm

Confident & engaging

Deep & grounded

Clear & composed
Good to know.
What the rhythm engine hears
It models emphasis, lightness and phrasing in the reference and your recording. The comparison shows where their rhythm differs, giving you a word or phrase to focus on next.
Shadowing with a clear target
Shadowing can help you improve. 30Speech gives it a clearer target: rhythm notes show what to follow, and feedback on your recording shows where you differ. Work on a specific phrase before repeating the whole clip.
The 30Speech approach
Other apps also offer conversation and pronunciation feedback. 30Speech’s focus is a visible comparison with the reference voice you choose: see emphasis, lightness and phrasing in both recordings, then work on the difference. Bring your own script for personal rehearsal, or develop your own answers in One Take and Discussion.
Your own topics and scripts
Yes—bring your own speaking topics or Rhythm scripts. Custom practice is part of paid plans.
Language you can keep and reuse
Save words or phrases with their sentence. Return to them for recall practice.
Coming soon on iOS and Android
30Speech is coming soon for iOS and Android. Download links will appear here at launch.
Coming soon · iOS + Android
Stop repeating the same mistakes.
Follow rhythm notes. Compare your recording. Give your next take something specific to fix.
See the pattern. Try a better way. Use it again.
Give practice a direction.
Practice sessions →