So I'm building a mobile app whose core feature is scanning QRcodes. I notice how effective the WhatsApp on iPhone scans QRcode even in low light conditions. I want that kind of efficiency in my app because it's the most important feature. Can ReactNative provide this or do I have to go with Swift?
Either way, if you're adventure enough, try SCADE beta release that will run on Android and iOS natively using Swift langauge. To check SCADE out, <a href="http://scade.io" rel="nofollow">http://scade.io</a> and they are working with PerfectlySoft who doing Server-side Swift Perfect.ly
You don't have to do this in Swift necessarily, you can go with ReactNative. Please look at this: <a href="https://github.com/moaazsidat/react-native-qrcode-scanner" rel="nofollow">https://github.com/moaazsidat/react-native-qrcode-scanner</a>