The current version in the app store and play store today supports editing and collecting on a point feature service. The next release will have support for lines and polygons. The features are synced back with your ArcGIS Server feature service or Hosted feature service. We are working on an disconnected solution which will be in a future release but the next update will have tablet support, lines and polygon support and a few other enhancements.
The Collector app has been updated (v. 10.2) on iOS and Android (coming soon).
Whats new? Updated user experience Dedicated tablet and iPad experience Support for collecting lines and polygons GPS streaming Improved collection workflows Improvements to map tapping behavior Various bug fixes and improvements Support for enterprise logins Support for additional languages Android issues addressed: NIM090003, NIM090935, NIM091973, NIM092424, NIM092833 iOS issues addressed: NIM094438, NIM094401