T9 Keypad Calculator

Bought a keypad phone to get away from your touchscreen? Now you can do everyday calculations using the physical keypad and D-pad on your keypad phone.

Designed specifically for dumbphones, feature phones and other keypad devices like the CAT S22 Flip, Qin F25 Pro, Alt Mive Style Folder, Mode 1 Retro 2 etc.

--Calculator--
Perform everyday calculations with addition, subtraction, multiplication and division, decimals, percentages, positive and negative numbers, backspace and clear.

You also get the ability to share a calculation as a screenshot.

Use the physical number keys and D-pad on supported dumbphones or use the on-screen keypad when needed.

--Pocket tools--

Shop & Tax
Work out prices, tax and totals while shopping.

Tip & Bill Split
Calculate a tip and split the bill between people.

Unit Conversion
Convert length, mass, volume and temperature.

Percentage
Quickly calculate percentages, increases and decreases.

Loan & Mortgage
Estimate loan and mortgage payments and costs.

Trip Fuel Cost
Estimate the fuel cost of a journey.

Savings Growth
See how your savings can grow over time.

All tools are accessible via the keypad by long pressing keys 1 to 9.

The interface is tuned for popular keypad phones including CAT S22 Flip, Qin F21, Qin F22, Qin F25, Mode 1 Retro 2, Samsung Folder 2 and other supported devices.

--Settings--

Pro unlocks the Settings section permanently with a one-time purchase.

Choose from Light, Dark, High Contrast and Outdoor Amber themes. You can also customize number formatting, haptics, click sounds, screen timeout and keypad behavior. Also includes a multi-press solution if your device's keys are sending multiple key press events on a single physical press.

The calculator and all pocket tools remain free.

--Privacy--

You decide whether analytics and crash reporting are enabled. They are off until you allow them.
https://starklyte.com/privacypolicy.html