TriTab Calc Flex: Calculator

Keep three calculations ready at once. Compare results, add or remove tax, split bills, review history, and unlock scientific tools when you need them.

Three calculations, one clear screen.

TriTab Calc Flex gives you three independent calculator tabs—A, B, and C—so you can switch between figures without losing your results or history. It is useful for comparing prices, shopping, estimates, travel, and splitting a bill.

Key features

• Three independent calculator tabs
• Results and history retained for each tab
• Copy results from history
• +Tax for tax-inclusive prices
• -Tax for calculating the pre-tax amount
• 8%, 10%, or a custom tax rate
• Square root, square, and percentage
• Swipe to undo and redo
• Compare the total and difference across all three tabs
• Split bills with optional rounding
• English, Japanese, Simplified Chinese, and Traditional Chinese

Add only what you need

The one-time Ad-Free & Display Pack removes the banner ad and unlocks high-contrast and dark themes plus larger text.

The one-time Scientific Calculator Pack unlocks trigonometric and inverse trigonometric functions, log, ln, exponentials, square root, square, reciprocal, pi, e, DEG/RAD switching, and Night mode.

There is no monthly or annual subscription. Every purchase is one time only, and purchases can be restored in this app using the same Apple ID.