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Good utilities are the ones there when you need them and gone when you don't. This calculator app is perfect for making quick calculations while writing as it uses a small pop-up display that works in any app.
Just fire it up and it sits on top of your other apps, ready to knock off quick calculations. Close it and it is gone.
Need a simple scientific calculator? Just swipe on the floating keypad and voila!
The Chrome browser isn't just for writers but it is the best mobile browser on any platform.
The ability to instantly open any web site currently open on other devices is a particularly useful feature for writers.