Adaptive drills that focus on what you struggle with. Read real Chinese with instant glosses. Every word you look up becomes practice.
Free to start. No credit card required.
What does this character mean?
44 drill types across reading, listening, speaking, and writing. The system tracks what you get wrong and adjusts. No wasted repetition.
Read real Chinese passages at your level. Tap any word for instant pinyin and translation. Every lookup feeds back into your drill queue.
Listen to passages at adjustable speed. Reveal the transcript when you're ready. Build comprehension, not just vocabulary.
Content structured around HSK 1-9. Track your projected exam readiness. Know exactly where you stand and what to work on next.
Read a graded passage. Watch a show. Listen to a podcast. Encounter real language.
Every word you tap to check gets logged. The system sees exactly what you struggled with.
Your next session prioritizes the words you actually needed. Not a textbook list — your list.
Without review, a new word fades within days. Spaced repetition brings it back at the exact moment you'd forget.
Each pulse is a review session. The curve gets shallower every time.
Every drill, every score, every recommendation is deterministic. The same right answer every time. Responses are instant.
Aelu's scheduling algorithm is based on FSRS (Free Spaced Repetition Scheduler) with Bayesian confidence dampening — the same family of algorithms used in peer-reviewed spaced repetition research. Every drill, every interval, every difficulty rating is computed deterministically. No variable quality.
30-day money-back guarantee
If you're not satisfied within the first 30 days, email us and we'll refund your payment in full. No hoops, no retention offers, no forms to fill out.
Free to start. No credit card required.