GPS task tracker. mobile app with api. 
1. create worker account
2. login worker account
2.5 post custom logo url with phone number of worker
3. post task to worker via api
4. worker see logo and tasks
5. worker starts task logs gps coordinates and time every X(customizable via api) seconds
6. worker ends task 
7. get task status from api call - in progress - not started- ended. also returns log of gps cooridinates
8. should work in iphone and android.