Tempo Smart Calendar ( iOS)
While it's currently iPhone-only, Tempo Smart Calendar is a worthwhile calendar app that integrates well with other services.
myMail ( iOS)
MyMail has all of the standard features you'd expect in a modern e-mail app, but nothing that stands out as a must-have feature.
Oyster ( Android)
Oyster is perfect for trying out books you might never purchase, but you'll still need to buy new releases and other popular titles elsewhere.
Bookviser Reader ( Windows Phone)
Despite its sluggishness, the Bookviser Reader for Windows Phone is a great way to get free classic literature on your Windows Phone.
Huebrix ( Windows Phone)
In Huebrix for Windows Phone, 2 bucks gets you over 400 clever puzzles in a minimalistic, well-polished game.
Modern Combat 5: Blackout ( Android)
Even with its issues, Modern Combat 5: Blackout is still the best first-person shooter on smartphones and tablets.
Overcast: Podcast Player ( iOS)
With solid basic features in the free version, you should definitely give Overcast a test drive, but check out the competition before paying the higher price.
Manything ( iOS)
Manything can't match the video quality and options of some traditional Wi-Fi cameras, but there's no easier way for iOS users to experiment with DIY home security.
Sunrise Calendar ( Android)
An intuitive interface makes Sunrise Calendar one of the best free calendar apps that's available on multiple platforms.
Beats Music ( Android)
Beats Music's extensive playlists and spot-on recommendations mean you'll never have to hunt for music.