Talkit (https://www.talkit.ai/fr/) is an iOS and Android app for learning English.

Based on oral, conversational and voice recognition, the dialogues with the 3D characters on realistic situations adapt according to the answers provided.

Leaderboard, live chat, and chats with pre-configured avatars.

Credits earned through successes and needed to launch the various activities.
Limited free version with new credits every 24 hours in addition to those obtained.