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.
Google Opinion Rewards is easily one of the best free Android apps in the Google Play Store. To use this app, you simply download and install it, then open it one time. After that, the app will periodically notify you to ask you some questions. You’ll get credit for use in the Google Play Store every time you answer a survey. That credit can go toward buying yourself apps or games in Google Play. It’s a great way to expand your collection without spending real money. At worst, everyone should have this app installed. Android App
At its core, Any.do is a list manager. You can quickly create a shopping list and have it synced among your devices and even share the list with others. The app also doubles as a task manager, keeping you on top of what needs to be done. This very capable app sports many features, but we particularly like one called the Any.do Moment, which encourages you to take a second and review your plans for the day. Lists are one thing, but building good productivity habits is quite another. New Droid Apps
Network Analyzer makes it easy to view information about all of the Wi-Fi networks nearby. With a few taps, you can see the strength of networks in the area on a dynamic graph and view detailed information about your connection, such as your IPv4 Address, MAC Address, and Default Gateway IP. You can even run a network query from within the app; it lets you Ping an IP/Domain Name or even check the DNS Server settings. It's the perfect companion to our article on how to find your IP address.
Otter is an innovative automatic recording and transcription service that works in real time. Simply hit the record button during a conversation or meeting and Otter will produce a usable transcript a few minutes later. Otter's app is fluid, well-designed, and quick in operation, which makes it ideal for students and professionals who rely on their mobile devices for their work. The app also integrates other top-notch features such as cross-conversation speaker identification, excellent search tools, and in-app editing of transcripts. Droid App