Fotonica ( iOS)
Fotonica is a never-ending running game that's worth it for the "Tron"-like visuals and ambient electronic audio.
Salient Eye ( Android)
As far as free theft-deterrent and motion-notification systems go, Salient Eye has the lock on simplicity.
QuickPics Photo Manager ( iOS)
With easy to use tagging features, QuickPics gives you a better way to search your photo library, but only if you're willing to put in the work.
Humin ( iOS)
With better ways to search your contact lists, and tons more information for each contact, Humin is an excellent replacement for your iOS dialer.
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.
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.
Lenka ( iOS)
If you're looking for a simple app for taking black-and-white shots using your iPhone's camera, Lenka is worth the price.
UpWord Notes ( iOS)
With gestures, theme customization, and plenty of other useful features, UpWord Notes is better than most competing title and a great replacement for Apple's Notes app.
VLC ( iOS)
As long as you have the videos to watch, VLC's gesture controls on mobile and smooth performance on any device make it an excellent app for video playback.
ProCamera 7 ( iOS)
ProCamera 7 could potentially be one of the leading photography apps in the App Store, but unfortunately the bugs and issues in the current build make me recommend that you wait.