One of my favorite features is My Bikes, which lets you document your bike’s parts, specs, and other information—when you’re at the bike shop, you’ve got everything you need to find the right part. (You can also keep a log of all maintenance you perform.) And Price Search checks over a dozen online vendors for the best price on a part or accessory. It’s a handy app for those of us who cycle for recreation and would like to be a little more self-sufficient.