Prompt sent
Generation begins
Site adapters look only for stable interface signals such as busy states and stop-generation controls.
The habit loop
Practice that ends on time.
AIterval converts a naturally occurring pause into a compact listen, answer, and review loop. It never asks you to linger.
After your threshold
One sprint appears
Listen without text, select one answer, and see concise Japanese feedback with the exact evidence.
AI completes
The sentence continues
A readiness notice appears without replacing the exercise. Finish the question, return to AI now, or save it for later.
Next opportunity
Practice adapts locally
Due reviews, weak listening skills, recent variety, difficulty, and expected wait length shape the next recommendation.
Transparent recommendations
No external AI API. The score is deterministic, explainable, and tested.
Private by default
Only learning activity and preferences are stored locally.
Honest progress
Recovered time is calculated from real active sprint duration—not invented XP.