I'm not sure how effective this will be, you really need communities of speakers using it in daily conversation to keep languages alive, not some individuals le

I'm not sure how effective this will be, you really need communities of speakers using it in daily conversation to keep languages alive, not some individuals learning it off some app. Speaking a language well is hard and full with nuance, much of which you can't really learn by "the elephant does not eat bread"-type stuff DuoLingo gives you. None of my Irish friends really speak Irish for example, in spite of being taught at school from an early age. Not that Irish is "dead" by any means – there are still parts of Ireland where Irish is used in daily conversation – but it's a good example how you need more than just education to keep a language alive.