Short lessons, a streak worth keeping, and a review schedule that knows when you are about to forget a word.
Learning with Sona is quick and it counts. Short, bite-sized lessons earn you points and unlock new levels, and the words you get wrong come back until they stick.
Sona tracks which words are fading and brings them back just before you would forget them — a published forgetting-curve model, not a fixed timetable.
A daily goal, a streak worth protecting, and a reminder when the day is nearly over. The habit is the product; the lessons are just what you do inside it.
Every sentence is drafted by machine and then read by a native speaker before a learner sees it. Nothing reaches a lesson unreviewed, and the app says plainly which is which.
No install, no app store account, no card. Sona runs in the browser your phone already has, and the audio is small enough to keep for the ride home.
Card, wallet, or carrier billing where the operator supports it. A few coins a day, and one message stops it. No annual lock-in, no dark patterns on the way out.