Google Maps virtually owns the navigation apps scene and it remains of the best Android apps ever. It gets frequent, almost weekly updates that seem to only add to its incredibly generous list of existing features. Aside from the very basics, Google Maps gives you access to places of interest, traffic data, directions to things like rest stops or gas stations, and they even let you have offline maps now (albiet temporarily). If you add to that the Waze experience, which includes tons of its own features, and you won’t need another navigation app. Ever. Google also owns and operates Waze. It’s unique and fun in ways that Google Maps isn’t and we also highly recommend it.
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. Android App
Privacy stalwarts rejoice! Tor now has an official (and modern-looking) Android app. The Tor project operates under the principle that "internet users should have private access to an uncensored web." Make sure to read the overview of how Tor works before you start using it, as it addresses specific types of privacy threats (and does so very well). The Tor browser may perform more slowly than other browsers, given its complicated inner workings, but that drawback should be negligible for the users who appreciate and rely on its protections.
Tasker is a glorious application if you have the patience to learn how to use the app. What it does is allow users to create custom made commands and then use them in various places. There are many apps out there that have Tasker support and you can even use Tasker to create very complex commands for NFC tags. It’s difficult to truly explain what this app can do because it can do so many things. Between the apps supported, plugins you an add, and the sheer volume of stuff that you can do, there aren’t many apps out there as useful as this one. IFTTT is another excellent automation app. In some cases, it may even be better than Tasker thanks to its simplicity and wide range of uses.
Grammarly Keyboard corrects your grammar and spelling errors as you type. This keyboard is useful for everything from writing emails to composing social media posts to editing long-form documents. In use, Grammarly makes it easy to accept changes or access a card-based interface with more in-depth explanations of an error. It also offers a good number of visual customizations, such as a choice between a light or dark theme options and the keyboard height, as well as editing options, such as auto-correction and capitalization preferences.
Evernote is a legendary note-taking app. It’s easy to use and comes with some really cool features including voice commands. You can also take a note and view it on your lock screen or smartwatch. Evernotes are also available across multiple devices, including on desktop. You can also find notes based on your location if you are near to where you took the note in the first place. There is a Plus version available for $2.99 a month and a Premium version for $5.99, but the free version is great as well.
Dropbox pioneered the personal cloud service, where all your stuff would be available no matter what device you were using. On Android, it holds its own—even against the highly integrated Google Drive. Dropbox can also act as a seamless backup for your images, automatically uploading every photo to the cloud. It even includes some light image editing tools. If you're the type of person with lots of files already stored in Dropbox, this app is a must-have. Droid App