# Developer Calc Hex Dec Oct Bin — Show all Base number

> Developer calculator for binary, octal, decimal, hexadecimal, and color codes. (iPhone/iPad app by QQ TSUBASA.)

- Source: https://appshunter.io/ios/app/developer-calc-hex-dec-oct-bin/id568750126 (this page in markdown: same URL + `.md`)
- Developer: [QQ TSUBASA](https://appshunter.io/developer/568750169)
- Category: Utilities, Education
- Price: Free
- Rating: 4.10/5 from 15 App Store ratings · 93 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 4 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2012-10-17
- Data updated: 2026-09-05
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/developer-calc-hex-dec-oct-bin/id568750126/reviews.md

## What is Developer Calc Hex Dec Oct Bin?

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

## Key features

- Binary, octal, decimal, hexadecimal conversion
- Color hex code and RGB display
- Large 19-digit decimal display
- Conversion reset toggle
- Maximum and minimum value display

## Recent user reviews (10 of 93)

All indexed reviews: https://appshunter.io/ios/app/developer-calc-hex-dec-oct-bin/id568750126/reviews.md

### 5/5 — 4つの進数があるからいい

*2024-09-03*

算数と数学が好きな人は結構楽しいと思う
ちなみに僕も算数と数学が好きだから楽しい  
自学で何しようか迷ってたからインストールしてみたらよかったからこれからも使っていこうかな？

小学生からのレビュー

### 1/5 — No landscape

*2024-04-03*

Apps that will not switch to landscape on an ipad are worthless!

### 5/5 — 能汉化就好了

*2024-02-21*

非常喜欢的一个计算器，能把16，10，8，2进制这个标题汉化一下就比较直观了，还有16进制这一栏能用0×显示方式就能一眼就知道这个是16进制了，这样就可以删除其他计算器了

### 3/5 — Need more functionality

*2023-11-14*

Changing between modes deletes the input. I need to use and dec interchangeably eg. H1A + dec254.

### 5/5 — DevCalc

*2023-02-21, version 2.2.7*

Very handy. My only criticism is when you have a binary number such as “1011.011”. There isn’t a decimal point on the calculator. Other than that it’s great, thanks.

### 3/5 — Good app but not for hex colours

*2022-05-20*

Designers use 6 digit hex. This handles it well, but copy for pasting into other apps is no good. It puts spaces between the hex pairs. So if you want to copy the colour FF560A it copies as “FF 56 0A” which cannot be pasted into any other app. Pity, because this would be the best out there otherwise

### 5/5 — 考级必备

*2021-11-13*

考五级必备

### 1/5 — Не устанавливайте!!!!!!

*2021-02-23, version 2.2.3*

НЕ устанавливайте !!!!!!!
Ужас начался 5 айфон. Какое то вредоносное ПО! Установилась реклама социальных сетей китайских в Настройках( рядом с фейсбуком и Твитером)  без ведома  моего ) затем на телефон не могу больше ничего установить из эпстора!!!!!!!Перезагрузка не помогла. В эппл поддержке не помогли.

### 3/5 — 希望加入小数点功能

*2020-09-27*

这个功能还是比较实用的，开发者辛苦了，希望加入小数点功能，让这个计数器更加完美

### 5/5 — 简便

*2020-07-10*

好用、洁面干净

## Frequently asked questions about Developer Calc Hex Dec Oct Bin

### What does Developer Calc do?

Developer Calc allows you to convert numbers between binary, octal, decimal, and hexadecimal bases all on one screen. It also displays color hex codes and RGB values simultaneously, making it a convenient tool for developers.

### What are the key features of this app?

Key features include real-time conversion between binary, octal, decimal, and hexadecimal, display of color hex codes and RGB values, a large 19-digit decimal display, and an option to toggle conversion reset.

### Is this app free to use?

Yes, the app is free to use. It is supported by advertisements, which are displayed within the application.

### What kind of devices is Developer Calc compatible with?

While specific compatibility details are not provided, this is a mobile application designed for use on smartphones and tablets running mobile operating systems.

### What are common use cases for this app?

Common use cases include converting IP addresses to different bases, working with memory addresses, generating color codes for web development or design, and performing quick arithmetic in different number systems.

## Version history (last 5 releases)

### 2.2.11 — 2025-08-26

Fixed a little bug.

### 2.2.10 — 2025-08-26

Fixed a little bug.

### 2.2.9 — 2025-06-09

Updated some UI.

### 2.2.8 — 2024-01-23

Updated some UI.

### 2.2.7 — 2022-10-31

Fixed some UI.

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All apps by QQ TSUBASA: https://appshunter.io/developer/568750169

## Related topics

[dec opcodes](https://appshunter.io/ios/topics/dec-opcodes)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-05.*