Simple Basic Calculator Ad Free (plus GST Buttons)

This is a Simple calculator for basic business operation and daily life use.

Following are the highlight:

1. Calculate small-big all numbers, no limit.

2. Fraction up to 9 decimal places.

3. Four additional Percentage buttons for GST/TAX/VAT etc. calculation, you can edit the percentage value.

4. Extra Buttons: Square, nth power/exponent, square root, nth root, inverse, factorial, percentage, plus-minus for signed negative.

5. Choose decimal and grouping: US-UK like, Indian like, Europe-like

6. Memory buttons for dual calculation.

7. History for rechecking

8. Split-window / multi-window support