excellent , simple , nice interface. A well made app

Perfect!

Great Work

Love it!. Searched for a simple math calculator FF extension that would accept keypad entries as well as mouse click, and also save the result for some time . This one does it all very well. A few suggestions/new features..(1) option to copy the result , (perhaps with a dedicated copy button?) (2) is it possible to keep the calculator open across tabs/sites just in case the use wants to keep a running total/calculations using data from various tabs/sites?. Obviously there is a lot of scope for expanding the extension or new ones for - eg, option for date calculations (diff between two dates, no of days/hours to a given date - past or future, etc); or currency convertions/calculations; or interest calculations (discount/tip/mortgage/simple/compound/EMI etc). Thanks a lot anyway

At last, one calculator add on that works!!!
Is it possible for you to add a history of calculations and that can be viewed even after a restart of Firefox?!? Also with that if possible to take advantage of past calculations and re-use them...

Thank you, and please continue to work!
Спасибо , и пожалуйста продолжайте работу