Frequently asked questions

Type it, then swipe the keypad left or right, or tap calc, dec, hex or bin in the mode bar. The entry and the whole ribbon are converted at once. On a hardware keyboard, ⌘1 to ⌘4 do the same. See the features.

Yes. On iPad, and on iPhone in landscape, the ribbon and the keypad sit side by side. On iPhone Duo, DevCalc follows every posture: closed, open or partly folded, and your calculation carries over each time you fold it.

In hex and bin, only the digits of the active base are offered, and bin accepts nothing but 0 and 1. It is deliberate: an impossible entry cannot be typed.

DevCalc follows the convention of a simple calculator: the percentage applies to the first operand. In the same way, 200 × 10 % = gives 20, and 50 % on its own gives 0.5.

Tap it, whether it is a result or an operand: it comes back into the calculation, marked with an arrow on the ribbon. If an operation is pending, it is completed with that value.

Long-press a result to copy it. To share the whole ribbon as text, to Mail, Messages or Files, use DevCalc menu → Share.

An automatic AC clears the calculation after a period of inactivity, one hour by default. The delay is adjustable from 5 minutes to 24 hours, or can be switched off entirely, in Settings.

The dec tab always works in 64 bits. The selector appears in hex and bin, where the width of the word is what you are actually reasoning about.

Yes, on iPad as on iPhone. Digits 0 to 9 and A to F, the operations, Return or = for equals, Delete, Esc for AC, ~ for NOT, and ⌘1 to ⌘4 to change mode. The full list is in the features.

No. DevCalc has no network code at all: your calculations stay on your device. Only what you choose to send through the support form is received, as explained in the privacy policy.