Tap the hamburger menu, the icon with three horizontal lines, at the top of the calculator to open Settings.

Cuprio supports iOS display modes, preset skins, and your own photos.
Choose System, Light, or Dark under Theme.
Choose a preset under Background.

Vivid, bright, and energetic, based on orange and yellow.

Fresh and calm, based on green.

A playful lucky-cat design.

A relaxed cafe atmosphere.

A bright cherry-blossom design.

A calm Japanese-style design inspired by nature.
Open Background, tap Choose from Photos, select an image, adjust it, and tap Done.



Move toward Light to show more background, or Strong to make buttons easier to read.

Clear the current background.
Calculates in input order.
Example: 1 + 2 × 3 = 9
Multiplication and division are calculated first.
Example: 1 + 2 × 3 = 7
Calculates hours, minutes, and seconds. This mode is suitable for calculating durations such as working hours and travel time.
Example: 07:50 × 2 = 15:40
Handles time as decimal hours. Because time can be used as a number, this mode is suitable for calculations such as hourly pay.
Example: 07:30 × ¥1,200 per hour × 20 days = ¥180,000 per month
Choose 1%, 5%, 8%, 10%, 15%, 20%, or a custom rate. The default is 10%.

Choose the displayed decimal places.
Choose round half up, round up, or round down.
Turn on the option to show M1/M2 keys. Long-press to save and tap to recall.
Configure the keypad layout.
Configure vibration when keys are tapped.
Choose a language at the bottom of Settings.