What you want is cross-platform:
- Web (IE, Safari, Firefox, Chrome, and older versions of those browsers)
- Web responsive (When you access it from small screens or access the web from your phone's browser)
- Android (old devices to recent ones)
- iOS (old devices to recent ones)
- And, eventually, get to a desktop app, ideally on windows, mac and linux.
Say you're the tech lead and you need to make a decision about the stack to support all these platforms, and you're a team of 2-3 devs, yourself included. What stack do you pick?