Stimuler is an English fluency app that focuses on speaking practice through an AI‑driven tutor. Users record short speeches and receive instant feedback on pronunciation, fluency, grammar, and vocabulary, along with a score comparable to IELTS bands. The app also offers live video mock IELTS speaking tests and a large set of practice topics, providing personalized tips after each session. Its distinctive approach combines rapid AI feedback with structured practice roadmaps to help learners improve conversational skills on the go.