Currently I'm using run keeper because it integrates well with what I have and announces my pace over my headset. I'm wanting to go away from bringing my phone on my run with me so the Apple Watch actually seems like a good idea now that it has a built in GPS. I can also pair it with my headset to play music stored on the phone, and it reads my heartrate, great! The only downside is that I have not found an app that will announce what my current pace is on the watch only. I can see it if I look at it, but that annoys me in the middle of a run. Has anyone run across an app that does that yet?