For developers, it could be a good source of extra income. That said, some developers have reported huge download numbers off the back of the free app of the day promotion, but no resulting increase in sales once the promotion is over. You are also likely to do better with tablet optimized apps than smartphone apps in general, as Kindle users are the primary customers. Android App
Want to keep your internet activities on the down-low, or simply don’t like the idea that the government could be spying on your every move? One of the best Android VPN apps is a great way to prevent that. ExpressVPN offers both a virtual private network, and some advanced features — such as the ability to connect to servers in more than 100 locations around the world. Droid Apps
At first, Snapchat was a little dangerous, popular with the hip and the young, and utterly baffling to everyone else. With Snapchat, you quickly snap and exchange photos with one or several friends. The app also supports video snaps, as well as voice and video calling. The catch is that whatever you send will vanish after a few seconds. It's just a fun and ephemeral way to share the world around you. New updates make the service much easier to use, let you save old snaps, and build ongoing public stories. The more things change, the more they just turn into Facebook.
Although a weather app's primary function is to give an accurate forecast, the presentation of that data is also important. Overdrop manages to accomplish both feats. The app includes helpful timeline-based graphs of temperature, wind, and rain predictions. Furthermore, you can change the units of measurement that the app displays as well as the weather provider. Your choices are Dark Sky or Weather Bit. Droid App
In a world rife with messenger apps, WhatsApp is among the most successful, boasting an enormous and dedicated user base. Add to that an integrated web version that lets users take their chats to the desktop. Recently, this app was bolstered by encrypted messaging provided by the minds behind Signal. It might just be the largest secure messaging service out there. Android App
Faxing isn't dead quite yet, but fax machines can safely be left behind thanks to online fax services. Fax.Plus's app is well designed and easy to use. It notably offers a digital signature tool and a contact manager. We like how mobile fax apps allow users to snap a picture of an attachment, attach a fax cover sheet, and send a fax off to a recipient in a few quick actions. Fax.Plus makes this process seamless. Android App

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. Android App


Overall, we really like Messages. If and when RCS becomes a real standard, it has a solid chance of actually being our top pick for messaging. Unfortunately, it remains a slight hope, one we’ve wanted for a full year now. As usual, carriers continue to slow down progress in this path, making it impossible for RCS to actually become a true feature. Until then, the customization options in Textra put it over the top, but we maintain hope that someday, Messages will be a must-have app on Android. Droid App
Mood Messenger is one of the youngest apps on our list. It doesn’t have a million and a half features, but that’s one of the nice things about it. Mood Messenger keeps things simple while still offering the key features you’ll want. Mood Messenger users can also send messages to each other without using SMS. The app is completely free with no in-app purchases. Droid App
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