Did some experiments today regarding mobile app tech, tried Ionic Framework and React Native. Latter one felt better and easier to get started, but Ionic has some great UI components out of the box, which should increase speed by much.

Although I'm still so afraid to take cross-platform solution.. My intuition tells me to go with native approach, but I'm not sure I will be able to be "full-full-stack" with backend + web app + android native + ios native on me, that sounds like too much.