Catena – Linked Calculator

Catena is a calculator that displays expressions and results together on screen. You can continue with new calculations while reviewing previous ones. ■ Drag and reuse calculation results Touch and hold a calculation result, then drag it into another expression to reuse it. When you edit the original expression, linked results update automatically. ■ Edit expressions in place You can edit previous expressions by tapping the part you want to change. Adjust numbers and recalculate without retyping the entire expression. ■ For everyday calculations Catena supports addition, subtraction, multiplication, and division, as well as decimals, negative numbers, and parentheses. It also supports Light and Dark Mode. ■ No account required, no ads No account is required. Catena has no ads and does not send your calculations to external servers.