Sound like a native speaker.
Sonapo listens to you read aloud, finds the few sounds that make the biggest difference for you, and coaches them a few minutes a day.
The test runs in your browser. Your voice is never uploaded.
Your sound report
Read aloud. Hear the difference.
No grammar drills, no walls of red. Sonapo picks what you read next so every minute goes into the sounds that change how you're heard.
Say 8 short sentences
Just read them the way you normally would. Sonapo listens to every sound and finds your one or two focus sounds, like the th in think or the r at the end of car.
You start with what already sounds native. Most people are surprised how much that is.
when done
Practice a few lines a day
Fresh practice text about things you care about: football, cooking, travel, work and more. Hear every line first in a natural American or British voice, slowed down if you like.
- One clear, friendly note per line, only about your focus sound
- Your word and the native one, side by side
- Short lessons: word stress, linking, small words, melody
think
Hear your progress
Every unit ends with a short check. Say the same 8 sentences again and play your Day 1 recording next to today's. Your progress is something you can hear, not just a score.
Sounds you've mastered graduate, and come back in quick reviews so they stay.
Your progress
Clear, then natural, then native-like.
Your goal is to sound native. Research decides the order: first the sounds that most change how you're understood, then the finer details, then rhythm and melody.
Clear
The sounds people most often mishear. Fixing these means fewer “sorry, what?” moments.
Natural
The finer details that make a native ear relax: vowel quality and the famous th.
Native-like
Rhythm and flow: word stress, linking words together, and the melody of questions.
Built to keep you going.
Strengths first
You see what already sounds native before anything else. Then only the one or two sounds that matter most.
No walls of red
Sonapo never calls a sound “wrong” from one sentence. It looks for patterns across many words and tells you gently.
Hear it, then say it
A natural American or British voice reads every line first. Slow it down, then speak along.
A few minutes a day
Short lessons that fit a coffee break. A streak with a free rest day each week, because life happens.
Text about your interests
Practice lines are written on your phone about what you like, so you never run out and never get bored.
Real life counts
Did anyone ask you to repeat yourself this week? Sonapo asks too, because that's the progress that matters.
Your voice stays on your phone.
Sonapo's speech, voice and text models run on your device. There's nothing to sign up for and nothing for us to see.
Read the privacy policy. It's short, because there isn't much to say.
- Recordings never leave your deviceAnalyzed on your phone, never uploaded.
- No account, no sign-inOpen the app and start talking.
- No ads, no trackingNo analytics or advertising code in the app.
- Works offlineAfter a one-time model download over Wi-Fi.
Start free. Pay once if you want more.
No subscription, no account. Your first unit is free, so you can hear whether it works for you before paying anything.
Free
Yours to keep
- The 8-sentence sound test
- Your full sound report
- Your first unit, every lesson in it
- A before/after check when it's done
Sonapo Full
Priced for your country in Google Play
- All units for your sounds, then rhythm and flow
- Fresh practice text about your interests
- Re-checks whenever you want
- A before/after report for every sound
Good to know
American or British: which should I pick?
Whichever you want to sound like. Many learners pick the accent of the people they talk to most, or the one they hear in the shows they watch. You can take the free test in both.
Is there an iPhone app?
Not yet. Sonapo is on Android today, and an iPhone app is coming. The free sound test works on any phone or computer with a microphone and a modern browser.
Does my voice get uploaded anywhere?
No. Both the app and the web test analyze your voice on your own device. We never receive recordings, and there's no account to tie anything to.
Why is the first download so big?
The speech, voice and text models live on your phone instead of in the cloud. That's what keeps your voice private and lets Sonapo work offline. It's about 1.3 GB, downloaded once, so use Wi-Fi.
How accurate is it?
Very good at telling you a sound is fine, and careful about saying it isn't. That's why Sonapo never judges a single sentence, and only points out sounds once a clear pattern builds up over many words.
How long until I sound native?
It depends on the sound and on how often you practice. Start with the sounds that are hardest for you, a few minutes a day. We won't promise a perfect accent, but you'll hear the difference between Day 1 and today.
Who makes Sonapo?
Sonacast Oy, a small company in Finland. Questions or ideas: kai@sonacasts.com.
How many of your sounds already sound native?
Find out in 2 minutes. Free, in your browser, nothing to install.