gMission is an opensourced general spatial crowdsourcing platform for researchers. For more information and related publication please refer to our website: http://www.gmissionhkust.com/ and github team page: https://github.com/gmissiongMission is developed by a group of researchers from HKUST.Interested researchers can join our public beta also. Just send your email address to zchenah#ust.hk and install the "TestFlight" app from appstore. Then you will get an invitation email which includes an TestFlight redeem code. Input the code to get our beta version.