Need an app for iPhone & Android

Looking to create a simple mobile app that uses the device’s GPS (to calculate distance) & stop watch.

Required Platforms: iPhone & Android

An onscreen stop watch is started manually by the user and it automatically stops when a certain distance has been covered.

Also required is the ability to login to the App using an existing Facebook account and share data from the App via Facebook posts.

I hope this makes sense. Much more detail will be provided to the winning bidder.

Please make me a fixed price offer.