Hi Joseph,
Our beta ReachView 3 app may suit your needs. It supports point collection and stakeout in different coordinate systems, including UTM. Currently, the app doesn’t have all functions and settings, so it’s integrated with ReachView 2. You can set the Correction input in ReachView 2 and work in ReachView 3 with grid coordinates after that. Please note that the app requires the latest dev firmware on your Reach.
Alternatively, you can try Carlson SurvCE, MicroSurvey FieldGenius, or use the Android mock location feature to get Reach coordinates in another 3-rd party app over Bluetooth.