Who buys this
Adult learners who can read a language but freeze the moment they have to speak it.
Where to start in Lovable
Paste this into Lovable as the opening prompt. It sets up one screen and one job, which is easier to grow from.
Build a speaking practice app. A learner picks a scenario such as ordering coffee or a job interview, then talks to the app by voice. Speech goes to text, the app replies in the target language with audio, and after each turn it scores pronunciation, grammar and fluency with one concrete correction. Track a streak, keep a list of the learner's recurring mistakes, and open the next session with them.
What you will need to wire up
- Lovable AI Gateway (speech-to-text, text-to-speech)
- Lovable Cloud (Postgres)
- Storage для записей
- Stripe
Build order
- One scenario, end to end. Build the coffee order completely: record, transcribe, reply, score, correct. A single polished loop teaches you more than ten half-built topics.
- Answer fast or lose the conversation. Anything past roughly two seconds stops feeling like speech. Stream the audio reply and show the correction after it, not before.
- Correct once per turn. Listing every error kills the will to speak. Pick the mistake that most blocks understanding and let the rest go until it repeats.
- Make progress visible. Store every session score and show the pronunciation curve over weeks. Speaking practice has no visible finish line, so the chart is the retention feature.
Where this usually breaks
- Transcription is weakest exactly where learners are weakest, on accented speech, so the app corrects words the learner never said. Show the transcript and let them tap to say it was heard wrong.
- Microphone permissions and background noise break the first session, and first sessions decide retention. Add a ten second mic check before any scenario starts.
How it makes money
- Monthly subscription with a free daily session. The daily free turn builds the habit that the subscription then charges for.
- Scenario packs for exams and work. Interview and exam packs sell at a higher price because the deadline is real.
Build this on Lovable
The prompt above is ready to paste. Open Lovable, drop it in and get a first working version in minutes. Free plan, no card, 5 credits a day.
Try Lovable+10 free creditsAffiliate link. The commission is ours, the price for you is the same.