Android Apps for CNC Machinists. Which one(s) do you use?

Hi guys!

So, about "Android Apps for CNC Machinists"... Which one(s) do you use and recommend?

So far I only have installed MechTab that's pretty cool. What else do you use in your smartphones for reference and help?

Let me know what's worthy.

Thanks in advance!

Greetings,

Daniel