Train to get healthy — and Zen Labs donates 5 percent of the purchase price to the Breast Cancer Research Foundation. Zen Labs has other fitness apps to help you get into a regimen for 5K and 10K runs, too.
More: Top 5 Smartwatches to Watch
Best Verizon Smartphones
How to Disable the Galaxy S5′s Annoying Touch Sounds
Best T-Mobile Smartphones
Next iPad Air Could Be Even Thinner With Integrated Display
iPhone 6 Render Points to Edge-to-Edge Display