The Calculator for Developer

Developer Calc includes the following features:
■ Binary, octal, decimal, and hexadecimal in one screen
■ Color Hex code, RGB in one screen
■ The maximum value : 0x0FFF FFFF FFFF FFFF
■ The minimum value : 0xF000 0000 0000 0000
■ The large 19-digit display of decimal
■ Conversion reset ON/OFF

The following features are not included: (Just For Simple)
■ Scientific: trigonometric, hyperbolic, and logarithmic functions
■ Conversion: length, area, volume, speed, weight, temperature; unit arithmetic

What’s New

Version 2.2.0

New UI.
Change clear button to del button.
Paste function.

Ratings and Reviews

4.2 out of 5
5 Ratings

5 Ratings

TheOtherSoftwareGuy ,

Very useful

Simultaneous presentation of base 2, 10, and 16 makes conversion between bases a simple effort. My only recommendation is adding a delete button to remove a mis typed digit, otherwise you need to retype the entire sequence.

ljlava ,

No complaints, but a few suggestions

This app does exactly what I had expected it to do, and works very quickly and smoothly. However, there are a couple of suggestions I'd like to make.

First of all, it would be helpful if I could switch between each type of number without having the current input deleted, so I could do things like add decimal values to hex etc. It would also be nice if I could change the max limit of numbers, to for example only 8 bytes or 4.

Tee.Kris ,

works perfectly for my use

i need to calculate hex value sums for my works but did not have my calcultor with me. this works great as a alternative solution. thanks.


2.3 MB

Requires iOS 8.0 or later. Compatible with iPhone 5S, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, iPad Pro (12.9-inch), iPad Pro (12.9-inch) Wi-Fi + Cellular, iPad Pro (9.7‑inch), iPad Pro (9.7-inch) Wi‑Fi + Cellular, iPad (5th generation), iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation), iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch), iPad Pro (10.5-inch) Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch) (3rd generation), iPad Pro (12.9-inch) (3rd generation) Wi-Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi-Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular, iPad (7th generation), iPad (7th generation) Wi-Fi + Cellular, iPod touch (6th generation), and iPod touch (7th generation).


English, Japanese, Simplified Chinese, Traditional Chinese

Age Rating
Rated 4+


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like