• Parentheses without an extra key: tap an operator in the expression to group the two adjacent numbers. Tap again to remove the parentheses.
• Unfinished calculations stay saved when you close the app. Pick up where you left off.
• Paste numbers and expressions from other apps by tapping the empty input field.

In Premium:
• Percentage hints show the base amount and the calculated percentage amount.
• Give saved numbers names like "Rent" instead of "Memory".
• Swipe left to delete history entries you no longer need.
• Confirmation before clearing your history helps prevent accidental deletion.
• On-screen pop-ups show what you've copied or pasted.