Runtastic is a smartphone staple, with a simple interface that doesn’t sacrifice advanced features. The no-frills app uses your smartphone’s sensors to track metrics, such as your distance and relative pace, as well as calories burned and your heart rate. A few extra features, such as 3D mapping and a workout diary, only complement the app’s wearable integration. Droid Apps
There are a lot of apps out there that pay lip service to security and privacy, but Signal was built from the ground up with the goal of letting people easily communicate without having to worry about being overheard. The Signal app is a complete phone and SMS client replacement (though it works just fine as a standalone app, too) for sending and receiving encrypted calls and messages. A recent update has greatly improved the app's look and feel, proving that security and usability don't have to be at odds. New Droid Apps
Streaming services are all the rage, but if you still keep music locally, BlackPlayer is worth your attention. We particularly like the Discover option, which shuffles through 10-second previews of seldom-played tracks in your library continuously, until you decide on what to listen to next. There's also a built-in tag editor and a ton of customization options for button styles, fonts, themes, and now playing notifications. New Droid Apps

If an event isn't being organized on Facebook, it's probably being done through Eventbrite. This service makes it easy to manage invites, RSVPs, and even ticket purchasing. Attendees get handy reminders about the events they planned to attend, organizers can see guest lists. We particularly like that Eventbrite can generate QR codes, making event check-in a breeze. Droid App
CloudCal offers one of the most unique ways of showing you how busy you are on any given day. The Android exclusive uses a system it calls Magic Circles, which turns the days of the month into clock faces and shows different colored circles, or segments of a circle. We also like that you can attach photos, audio files, and Dropbox files to specific events.
The big risk is malware. In our Android app security basics article, we recommended sticking to Google Play and avoiding third-party app stores. The security policy on different Android app stores will vary; some will perform similar safety checks to Google, while others won’t. If you are going to take the risk, then consider installing one of the top Android security apps first.
Once you start using Evernote, this note-taking app becomes a powerful tool for organizing just about everything. Notes can be anything—text, images, audio, or a mix—and are organized into notebooks. One of its killer features is optical character recognition, which makes the text in images searchable. Cloud-storage makes it the perfect tool for organizing the little pieces of a project into a finished draft.

File browsing is something everyone inevitably has (or wants) to do, so you might as well do it with a capable, fantastic file browser. Solid Explorer is pretty much as good as it gets in the file explorer apps realm. It features Material Design, archiving support, support for the most popular cloud services, and even some more power user stuff like FTP, SFPT, WebDav, and SMB/CIFS support. It looks great, it’s incredibly stable, and it just works well. There is a 14-day free trial with a $2.99 price tag at the end of it. This is, by far, the best file manager on Android for most people. Droid App
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