The free DuoLingo service already has an army of aspirational bilingual supporters, but that’s no reason to rest on your laurels. Today the developers have updated the Android app with a few changes to the user interface. The basics of the app have only been tweaked slightly – a digital spit and polish, if you will – but extra screens added to the end of lessons and progression screens should help users get a feel for where they are in the program. The end of lessons screens show progress and improvement on a day-to-day basis, sot of like a fitness app or an RPG. Impressively, the developers have actually managed to shrink the app while expanding