DevCalc
The programmer's calculator, with a paper ribbon.
Decimal, hexadecimal and binary on iPhone, iPad and iPhone Duo. Swipe the keypad to convert a number between bases, and keep every step on a ribbon you can scroll back through.
calcdechexbin
On the App Store as Developer Calc. Free, no ads.
Every base, one swipeType a number in any base, then swipe the keypad or tap the mode bar: the entry and the whole ribbon are converted to decimal, hex or binary at once, without losing a bit.
32 or 64 bitsUnsigned words of 32 or 64 bits, NOT and sign inversion, and only the digits of the active base on the keypad.
A ribbon that remembersEvery operation is printed. Tap any value to bring it back into the calculation, long-press a result to copy it, or share the ribbon as text.
iPhone, iPad and iPhone DuoPortrait and landscape everywhere, a hardware keyboard on iPad, and a layout that follows every posture of iPhone Duo.
iPhone Duo
Made for iPhone Duo
Closed, it is the iPhone calculator you know. Open, the ribbon and the keypad share the large screen. Partly folded, the split sits right on the hinge. Your calculation follows every fold.
iPhone Duo in detail →