AI Language Tutor App for Spoken Role-Play Conversations
Practise a language by role-playing everyday scenes out loud with an AI partner.
In plain English
Converly is an app for practising a new language by acting out everyday scenes. You and the AI each play a part, like a customer and a waiter, and you talk out loud. The AI answers like a native speaker and corrects your mistakes. You can even invent your own scenes, and learners pay a subscription.
~$2,383 MRR; $2,345 revenue in the last 28 days (whatsthe.app via RevenueCat, snapshot Oct 1, 2026)
Operator: Rémi Cassan
Revenue independently checked: documents reviewed by a publication, or a public dashboard.
Not disclosed.
The tool stack
Mobile subscriptions
App Store ↗iOS distribution
OpenAI API ↗LLM / vision
Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.
Step-by-step setup
- Pick learners who want speaking practice, not grammar drills.
- Build scenes where the learner and AI each play a role, out loud.
- Correct mistakes after each turn and let users write their own scenes.
- Subscription after a trial; grow through App Store search in many countries.
What's automated vs. the human 15%
The machine does
- Core AI generation/analysis
- Billing and onboarding
You still do
- Product quality and support
- Distribution and marketing
- Compliance and edge cases
Overview
iPhone app for spoken role-play conversations with AI tutors in 25 languages; OpenAI generates replies, corrections and speech, Apple speech recognition transcribes the learner; one-founder app.
Operator: Rémi Cassan. Website: https://apps.apple.com/app/id6745767154
Estimated split: about 85% of the work automated, 15% human.
Realistic income
whatsthe.app, an app marketplace that reads sales straight from RevenueCat, showed (snapshot Oct 1, 2026) about $2,383 MRR from 171 active subscriptions and $2,345 of revenue in the last 28 days. This is one operator’s result, often after months or years of work, and doesn’t predict yours. Check the live listing — numbers change.
Risks
- Very crowded: Praktika, Speak, Pingo and many others sell AI speaking practice.
- Voice AI costs rise with every minute of talk.
- One snapshot only; revenue was flat.
- Startup cost and time to first dollar are not disclosed.
*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.
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