https://github.com/reactotron/reactotron

• view your application state
• show API requests & responses
• perform quick performance benchmarks
• subscribe to parts of your application state
• display messages similar to console.log
• track global errors with source-mapped stack traces
• dispatch actions like a government-run mind control experiment

https://github.com/reactotron/reactotron/blob/master/docs/quick-start-react-native.md

에 설명되어 있는데로 테스트해 보면, 각 state도 볼수있고, 좋은 것 같습니다.

디버거 관련 이전 글 http://sir.kr/so_app/1190  

Reactotron 데모입니다. 

https://github.com/reactotron/reactotron/tree/master/packages/demo-react-native