6. The cost of outsourcing mobile app development: agencies vs. freelance developers Type of Mobile DeveloperAverage Hourly Rate6 MonthsNative Apps iOS or Android App Developer$35-150+$33,600 – 144,000Cross Platform Apps Xamarin/PhoneGap Developer$16-55+$15,360 – 52,800React Native Developer$20-150+$19,200 – 144,000How Much Does it Cost to Build a Mobile App? | Upwork www.upwork.com › resources › cost-build-mobile-app