Past: We actually built a "React Native" style framework back in 2008, for iPhone, Android, Blackberry, PalmPre, and Windows Phone -- called YAPL. Native controls are powered by an embedded JavaScript engine, and YAPL currently powers our main app for iOS and Android. Present: When we saw React Native we recognized it as obviously better, and are rewriting our entire app atop it. But even more: we're going for total coverage, including web. Future: We are absolutely committed to not just React Native, but building the best chat/financial collaboration tool for engineers -- especially for remote contract developers. Expensify isn't a company, or a product, it's a movement -- join us!