For Web developers, making the jump to building full-fledged smartphone apps can be daunting. Facebook could ease the transition with a newly open-sourced framework its engineers developed to build ...

Building mobile apps today can feel stuck in the past. Back in 2016, as a mobile engineer, I couldn’t get enough of Swift and Kotlin. They were sharp, powerful tools. But the landscape’s shifted.

Flutter emerged a bit later (first teased in 2015, released around 2017) from Google’s labs. It came with its own engine, ...