Practice range
Other tools
LekThai
Listen & type the digits
LekThai is built on the two most strongly evidenced ideas in learning science: retrieval practice and spaced repetition.
Every prompt makes you recall the answer before you see it — say it aloud, or type it — instead of just reading along. Decades of research show the effort of pulling an answer from memory is what builds the memory; passive review barely moves the needle. The largest reviews of learning techniques rank this “testing effect” at the very top.
It also remembers how you do. Numbers you miss come back sooner and more often; numbers you’ve mastered fade into occasional check-ins. This is the spacing effect — the same practice time produces far better long-term recall when it’s spread out and aimed at your weak spots. It’s the same principle behind tools like Anki.
Because Thai numbers follow a regular pattern, you’re not memorizing thousands of separate facts — you’re drilling a small system until it’s automatic. A few focused minutes a day beats one long cram, and the recall sticks.