If you use Android, you have a Google Account, and that means you have access to the excellent Google Drive cloud storage service. With Drive, you can easily access synced files across all your devices no matter where you are. With the additional Docs, Sheets, Slides, and Photos apps from Google, Drive is the center of a productivity hub on your Android. New Droid Apps
Pinterest is a social network of stuff, a place to "pin" things that interest you on themed boards. The Android app offers a great way to gather images from around the web for making lists or just collections of stuff that catch your eye. You could use it to help redecorate your living room or even to help you choose a tattoo artist. It easily integrates with your browser for fast pinning, and you can view the pins of others for added inspiration. Droid App
Combined with Google Drive, this is an excellent choice for collaboration, especially given how feature-rich the mobile and web apps are. Once you create a document, you can add people to it, so that they can collaborate. Once they accept the invitation, you can create a multitude of documents — similar to what you can do with Microsoft Office — and have your team collaborate in real time. Android App
This calorie counter and exercise tracker aims to help you lose weight the old-fashioned way—expending more calories than you take in. With its smart design and an extensive library of foods, it makes quickly logging the calories you take in and what you burn while exercising a snap. A barcode scanner makes it even easier to log that post-workout snack. This fitness app also plays nice with other such apps, so your data won't be tied up in just one place. MyFitnessPal won't give you a whole workout regimen, but it can make you more aware of your habits. PCMag has a full review of MyFitnessPal for the iPhone.