It has a nice, kind of Yahoo-weather like feel to the app. For a commercial success, I think the app does not even embody 1% of the necessary work:
* Without some sort of web+mobile experience, you are way behind everyone else that is established in the space (runkeeper, runtastic, strava, mapmyrun).
* The competitors are well-funded and start-uppy - so, even as you perhaps start to add necessary features like route-making, elevation-correction, etc - they will still be innovating and making new stuff.
* You integrated with Pebble, but the other hardware in the space probably makes more sense (like heart rate watches), so that's more work. Or nutritional stuff like MyFitnessPal.
For the marketing, I'd say:
* The app ends up being a demo because of the restriction on number of runs, while the competitors offer something fully functional, including Vima's paid features, for free. Is this going to work?
* The name is probably bad - take it from the guy who likes greek mythology for names. If it's a running app, you might as well say so. Runtastic, Runkeeper, MapMyRun - there's a theme here.
* I don't see any way I can join the community, so Vima can email me later and follow up to see why I'm not using the app after I downloaded it.
I've thought about making a fitness app, and I have some infrastructure such that I can get to market with a more feature-complete product than Vima, in just a few weeks. It's a big brawl to walk into though.