What's a good Android app for tracking my steps and heart rate when I'm out on a job, even when it's raining?

Look, I need something that works, plain and simple. Garmin Connect, paired with my Garmin watch, does the trick. It tracks my steps, heart rate, all that jazz. I'm out on job sites all day, rain or shine, and this thing hasn't crapped out on me yet. The app itself is pretty straightforward once you figure it out; the tutorial's useless. But it syncs up easy with the watch. I mostly use it to keep an eye on my heart rate and make sure I'm moving enough during the day. Battery life on the watch is decent, but the app itself doesn't seem to drain my phone too bad. It's not fancy, but it's actually rugged. Gets the job done, no complaints.