With Calcobot, special arithmetic operations are no longer a bother. Modular arithmetic is just one of many professional calculation functions. With multiplicative inverse elements you can easily compute multiple inverses in a multiplicative group of your choice. Try out the awesome ggd function to calculate greatest common divisors.
Added support for a memory register M makes calculating more fast and enjoyable. Recall the current memory register value with Mr, add or subtract a value with M+ or M- or clear the memory with Mc.

Now in version 1.3 with iPhone X Support.