Calibre is the giant of ebook management, and this app is the perfect (ahem) companion for it. With just a few clicks, you can add any book from your computer to your eReader over USB or Wi-Fi. You can also store your ebooks on the cloud for easy access from wherever you are. What's so surprising is how well it works, and how easy it is to use. If you've got a lot of ebooks and are ready to cast off the shackles of Amazon, this is the app for you.
Mint is a fantastic online service to keep track of your finances, and it really shines on Android. Once you've entered all your information, you can easily check up on your finances on the fly. Mint keeps you on track for your goals and a new bill paying feature make sure that you never miss a payment. Be sure to try out the app's excellent widgets, too. Droid Apps
Initially, we weren’t going to put any launchers on this list. Nova Launcher seems to be extend beyond what normal launchers are. It’s been around for years, it’s been consistently updated, and thus it’s never not been a great option for a launcher replacement. It comes with a host of features, including the ability to backup and restore your home screen set ups, icon theming for all of your Android apps, tons of customization elements for the home screen and app drawer, and more. You can even make it look like the Pixel Launcher if you want to. If you go premium, you can tack on gesture controls, unread count badges for apps, and icon swipe actions. Those looking for something simpler may want to try Lawnchair Launcher, Hyperion Launcher, and Rootless Launcher as well. Droid App