Hex,Dec,Oct,Bin(Dev Calc)

This is really nice! I like the idea of a calculator with multiple layouts. Really well implemented spite the lack of customization. If I could change one thing I would make the binary display more like a calculator instead of a long string of zeros and only show the significant bits. Otherwise best calculator I've found for programming purposes!

Good. It shows the number in all 4 formats at the same time and lets you write in any of them. Negative points: the number gets cleared when changing input mode and the "share" option doesn't use the native sharing system of the phone, which makes it very limited.

Great for colour mixing. Just remember that you need an amount of BLACK equal to 255 minus the amount of the colour for each colour. If you have 100 parts RED you need to add 155 parts BLACK. Similarly, for 200 parts GREEN you need 55 parts BLACK. Same idea for BLUE. Remember to swipe LEFT or RIGHT to switch between CALCULATOR and COLOUR MIXING functions.