Simply the BEST Calculator app
Best calculator app ever. I have tried an exhaustive number of calculator apps and each always has something missing. This one has the double/triple zeros, equals repeat, thousands separator, decimals adjustment, clean interface, customisable themes, and it is available for both iPhone and IPad! The free version is already very good but I decided to buy the full version so that there are no ads. Worth every dollar. Continue to keep the updates coming for this app. Keep up the good work!