Easy Scorecard is Android. They do not have an iPhone version yet. It's probably the best Android app and has some features the PDGA app does not have yet like tracking individual throw stats and calculating some stats for multiple rounds stored on the device. It's all B&W for some reason where the PDGA interface is full color. I think the PDGA scoring process is a little easier to see and faster. The full 3500+ listings in the PDGA Course directory is accessible with only 800 or so courses in Easy Scorecard. However, if you submit the GPS coordinates for the tees and pins on a course, it will allow you to calculate your distance to the pin when playing. That feature is planned for the PDGA app.
A proposal to allow smart phones and rangefinders to determine distance during rounds is under review by the Board for use starting in 2012. No action taken yet. Live scores can already be entered on the website if the TD sets it up and shows the scorekeeper in each group with a Smart Phone how to log in and do it.
Rater of the tossed arc.