Close-to-perfect tracking.
I used this application to track myself on a run. It worked quite well--was very accurate and matched other assessments I use to track my distance and speed. Since its been out for only a day, its difficult to assess its long-time usefulness. There are plenty of features missing, but we can expect the app to grow as new features are added.
This was obviously written by an experienced developer. Its quite well put together. (In fact, I believe this is the written by the same "Justin Davis" who wrote British Airways App and the copious use of British English in the documentation, such as "whilst", seems to further point to that likelihood.) The Google Maps feature is great--it showed an accurate map of where Ive run, sans a few zig-zags I made across the road. Also nice is that your map info is not uploaded to a "cloud" which I know Run Keeper, another App set to come out soon, will do. Uploading to a server isnt necessarily a bad thing, but this additional complexity adds developer time (and therefore cost) to the application.
I have only a couple of complaints: Using iPod functionality is a little bit difficult (i.e., skipping to the next track). But the nice thing is that if you accidently close the app, you can continue tracking yourself by quickly switching back and starting again. Also, adding a new trail is just a little unintuitive at first. Itd be nice if the MyTrails and New Trails tabs could be combined somehow (perhaps by using the "+" in the upper right hand corner as other apps do).
Jahead about
iTrail