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.
Firefox is lickety-split fast and has a clean design that is a joy to use. Mozilla makes a big point about how it doesn't collect your data, and we are pleased to see that the app comes with a full complement of security settings—including an option to protect your information from advertisers and a private browsing mode. Like the desktop version, Firefox for mobile has a robust selection of plug-ins, excellent tab management, and a dynamic start page for bookmarks and the latest headlines. You can even sync settings, history, and tabs with the desktop variant Android App
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