Ten Apps That Add Functionality to Kindle Fire HD
It’s a good idea to add a calculator to Kindle Fire HD, if only to figure out tips and your sales commissions, right? This is a calculator with tons of bells and whistles, from the ability to use mathematical expressions and time calculations to logarithmic and trigonometric functions.
Even if you’re not a power math user, the very nice interface in this app makes casual calculations simple to do. Also, the help system for this app is actually helpful.