Apps That
Went Free on
2016-02-20

An inter-dimensional rift has been opened in order to bring odd creatures to Earth and provide out of work soldiers with something to do. Defend your post by placing powerful towers in strategic positions, and command squads of heroes to clean up what’s left. After each battle, you’ll be able to level up your heroes and unlock devastating new weapons. The game also includes some snazzy graphics, which allow you to cover the battlefield in giblets.

Sleep Pillow features a collection 70 naturally recorded sounds that can be mixed and matched to create more than 300,000 combinations. You can also add sounds to your list of favorites for quick access later on. The app includes a sleep timer with fade, high quality images, and background audio support.

The Math Keyboard allows you to quickly write equations and share them however you wish. After adding The Math Keyboard, just tap the globe button to bring it up. The keyboard's seven different character categories can be accessed via the row at the top. Some categories have multiple pages, which can be accessed with a right to left swipe. The Math Keyboard works great in all native and third-party apps.

It displays all of the events on your calendar in weekly clumps. Just swipe to turn the page and view upcoming or preceding weeks. Create new events by tapping and holding on a day, and edit events by tapping on their titles. You can also tap on a day's title to enter the daily calendar view. The app includes the ability to jump ahead months and years with two and three finger swipes, and jump back to the current week with a long press on the top of the page.