What are some alternatives?
When comparing React Native Starter and IBM MobileFirst, you can also consider the following products
SimPholders - A small utility for fast access to your iPhone simulator apps.
React Native Desktop - Build OS X desktop apps using React Native
Evothings - Evothings is a mobile application enabler for the Internet of Things (IoT) industry
NativeBase - Experience the awesomeness of React Native without the pain
Android Survey Developer - Android Survey Developer lets you create industry strength mobile surveys for Android, by developing on your Windows desktop
LITHO - Litho is an input device for the real world.