You might know Fitbit from its popular fitness trackers, but the app that powers those devices works well on its own, too. Using your just your smartphone (assuming you meet the minimum hardware requirements), this fitness app can count steps and log activities to help you achieve daily goals. There are also social features, so you can compete against your friends. It's a must-have (really, you must have it) for Fitbit users, but also a smart choice for anyone looking to be more active.
If you are seeking an alternative app store because you find the Play Store overwhelming and difficult to search, then we have another solution to suggest. You could try an app that’s designed to improve the app discovery process and aid you in finding the content you want, but that still ultimately plugs into the Play Store to download and install apps and games. Droid App