Salient Eye ( Android)
As far as free theft-deterrent and motion-notification systems go, Salient Eye has the lock on simplicity.
Kwilt ( iOS)
Despite some promising features, Kwilt currently has too many irksome kinks to take down the Photos app as your default mobile image editor.
FreeTone ( android)
If you're looking for a spare number to deal with people from Craigslist or similar services, FreeTone does the job, but with the syncing problems and so many ads, there are better apps out there.
Pricing not available
Kingdom Rush Origins ( iPad)
Fast and exciting strategic gameplay makes Kingdom Rush Origins a must-have pick for tower-defense fans.
TwoDots ( Android)
TwoDots is one of the best games you can play this year, just watch out for those in-app purchases.
Vainglory ( iOS)
With stunning graphics, balanced gameplay and multiple ways to play within each game, Vainglory is a must download for battle arena fans.
Horizon ( iOS)
Though it lacks stabilization features, Horizon's simple interface and problem-solving purpose make it is easy to recommend.
Presence ( iOS)
The free Presence app is a great way to experiment with home security -- just don't let its prominently-featured online store trick you into spending hundreds on accessories.
Angry Birds Transformers ( iOS)
Angry Birds Transformers is a welcome departure from the slingshot approach found in previous Rovio games, and it's still very entertaining -- as long as you don't mind freemium timers.
Pixelmator ( iOS)
Advanced photo editing features and tons of artistic tools for creating and editing images make Pixelmator a must-have for photo enthusiasts and well worth the price.