Native iPhone/iPad, Android app development (Objective C/Swift, Java) - React Native development 1. iOS / Android development 2. Cross-Platform Development (React Native,etc.) 3. REST API, Web Service, XML, JSON, Amazon S3/EC2 Services 4. Cloud Services: Amazon Web Services, Google Cloud Platform, Parse 5. inApps Purchase, Push Notification 5. Google Map, Google API, 6. GPS, Location Based Services, Push Notification 7. iAds, Google Ads, AdWhirls, 8. Analytics: Flurry, Google Analytics