While the basic version handles math, the Pro version (often found in desktop versions or as an in-app purchase) adds several productivity tools:

: Use comments to label lines (e.g., "Rent," "Groceries") and apply colors like red for negative values or green for notes to make history easier to scan. 💻 Compatibility

: Save your full tapes as files, export them to HTML/PDF , or print them with custom headers, footers, and margins.

If you realize you entered a wrong number halfway through a long calculation, you can tap that specific line on the tape and change it. The app every subsequent result and the final total instantly. 🌟 Exclusive Pro Features

The most unique feature of is its interactive virtual tape , which functions like a "spreadsheet with a calculator interface". Unlike standard calculators, it records every step of your calculation on a scrollable tape that remains fully editable. 🔄 Real-Time "What-If" Adjustments

: Create your own buttons for repetitive tasks, such as adding a specific VAT/tax rate or performing complex formulas with one tap.