Most of us use the stock calculator provided on our phone and it is sufficient for basic use. However,
for a few extra functions and consistency across phones, you might like to download and install Google Calculator.
It is fairly simple to use and provides simple and advanced mathematical functions in an easy to use app. Basic calculations are displayed right on your screen. You can get a few scientific and mathematical functions by swiping from the right side – trigonometric, logarithmic and exponential functions are built in. It calculates in real time, so you do not need to press the = button!
This calculator is also available on Android Wear, so that you can carry it with you on your watch or wristband.
Of course, it is 100% free and ad-free too – go for it!
https://goo.gl/yRldwl
On-lyneTech 