Learn the signs by heart

A sign, five names: tap the one it is. The signs come in commonest first, so the first few dozen are most of what is written on any wall. A new sign joins once you know 8 in 10 of the ones you have, and every sign comes back later, further apart each time you get it right. Your progress stays in this browser and works offline.

Want to write them too? Scribe school has you draw the alphabet from memory.