Have you used Bolts from Parse on android or iOS ?

Over the past 4 years I've been working on lots of network focused apps for android and iOS, and I understand the trend towards both functional programming (less OOP, more event driven code).

And for that bolts seems to be the answer when it comes to asynch code, and callbacks in general.

My question is, have you used it ?

if so, did it really reduce the size of the code compared to typical OOP mainly MVC model?

also, did you find it clearer and a cleaner way to write your code ?