The very specific focus of F-Droid is to offer free and open source software (FOSS) Android apps. It’s basic, but apps on the store are categorized, and the list is searchable. You’ll find a big selection of free apps here, all of which promise no tracking, no ads, and no dependencies. It’s worth checking out for free apps, especially if you support the open source movement.
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
You have to try them out to appreciate how fun they can be. The one we recommend right now is Action Launcher. This is a free and excellent introduction to launchers because it provides clear and intuitive interface changes without adding so many options that it becomes off-putting. The latest edition brings many of the best features of the Google Pixel launcher and Android Pie to any compatible (Android 5+) smartphone. Droid App
Bouncer was our pick for the best new Android app from 2018. It’s a security app with a unique premise. The app lets you grant temporary permissions to applications. So, for instance, you can let Facebook access your location long enough to check into a place, and Bouncer disables the permission once you leave Facebook. This is a great way to use all of the features of a social media app without digging into your settings to disable those permissions or giving those apps permanent access to your information. The app runs for $0.99 and should work on most (if not all) apps. It’s rumored that this could be an Android Q feature. If that’s true, then even Google really likes this app.
Facebook Messenger Kids might seem like it’s built for kids, but it’s really built for parents. With the app, parents have control over their kids’ contact list, and messages can’t be deleted — meaning that parents can check in to take a look whenever they want. Of course, there are some pretty sweet features for kids, like kid-appropriate stickers, GIFs, emojis, and so on.
Tracking your period isn't just about knowing the cycle, but also the other factors surrounding it. Eve by Glow lets you track physical and emotional states, which can lead to some important insights when you take the time to interpret your own data. Eve also boasts a vibrant community and a wealth of information about sexual health built right in. Droid App