# Dev Calc -Developer Calculator

> Developer calculator for number conversions and color code generation. (iPhone/iPad app by Toshiya Hondo.)

- Source: https://appshunter.io/ios/app/dev-calc-developer-calculator/id1576503219 (this page in markdown: same URL + `.md`)
- Developer: [Toshiya Hondo](https://appshunter.io/developer/1571875732)
- Category: Productivity, Developer Tools
- Price: Free with in-app purchases
- Rating: 2.00/5 from 2 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 51 MB
- Languages: American English, Arabic, Czech, French (France), German (Germany), Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China) and 4 more
- Released: 2021-07-18
- Data updated: 2026-06-04
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/dev-calc-developer-calculator/id1576503219/reviews.md

## What is Dev Calc?

You can convert numeric to Bin, Oct, Dec, Hex immediately with Signed, Unsigned.

** Introduction **
This is a calculator app to help System Developers and Programmers.
Convert numeric to binary, octal, decimal, hex immediately.
You can set conversion bit number and signed/unsigned, so you can adjust settings for binary, short, int, long.
Also you can get clolor code for system application from RGB and Color Picker.
And you can choose preset color simply.


** Overview **
 - Convert numeric to binary, octal, decimal, hex immediately.
 - You can edit each digits for detailed confirmation.
 - You can get color code from RGB, HSL, HSV and Color Picker.
 - Using preset color, you can get color code quickly.


** Characteristics **
>> Numeric conversion
 - You can input numeric in binary, octal, decimal, hex.
 - You can choose bits size from 8bits, 16bits, 32bits, 64bits.
 - You can choose signed numeric or unsigned numeric.
 - you can edit each digits directly.

>> Color code
 - You can see a color code in Hex, RGB, HSL and HSV.
 - Support alpha channel of color.
 - You can get a color code from RGB, HSL, HSV adjuster and Color Picker.
 - You can get a color code just by choosing a preset color.


** Terms of Use **
https://coconutsdevelop.com/en/terms/terms_of_use.html


** Developer website **
https://coconutsdevelop.com/

## Key features

- Numeric conversion (Bin, Oct, Dec, Hex)
- Signed/Unsigned options
- Adjustable bit sizes (8, 16, 32, 64)
- RGB, HSL, HSV color code generation
- Color picker
- Preset color options

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Remove Ads (Monthly) | $1.99 | per month |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/dev-calc-developer-calculator/id1576503219/reviews.md

### 2/5 — App is awesome - but needs an Ad-Free version

*2024-10-04*

I have tried many different hex calculator apps and so far have found this to be the best except for the fact that it is missing an Ad-Free version for some reason. I can’t think why the developer would not give me the option to remove them with a simple in-app purchase.

### 4/5 — 広告なしにして 有償でも良い

*2024-09-25, version 2.0.1*

仕事に使うので広告が出るのは目障りです。
有償でいいので広告を消せませんか。

### 5/5 — 機能に不満は無いですが

*2024-08-09, version 2.0.0*

欲を言わせて貰えば、ボタンの横幅を少し減らして縦（高さ）を少し広げて貰えると入力しやすいかなぁ、と。

### 2/5 — Needs Purchase Version

*2023-11-20*

Too many ads, but this app is exactly what I need for converting between hex and binary and performing changes to specific binary bits and then getting the edited string back in hexadecimal very quickly for RFID programming and modification

### 4/5 — 広告消してほしい

*2021-09-22, version 1.1.2*

すごく便利な電卓です。
2進数で途中のビットを立てたり降ろしたりするのが面倒だったのですが、簡単にできるので助かってます。
有料オプションで広告を消せるようにしてほしいです。

## Frequently asked questions about Dev Calc

### What number systems can Dev Calc convert between?

Dev Calc allows immediate conversion between binary, octal, decimal, and hexadecimal number systems. You can also edit individual digits for detailed confirmation of conversions.

### Can I adjust the bit size for number conversions in Dev Calc?

Yes, Dev Calc supports adjustable bit sizes for numeric conversions, including 8-bit, 16-bit, 32-bit, and 64-bit. You can also choose between signed and unsigned numeric formats.

### How does Dev Calc help with color codes?

Dev Calc can generate color codes in Hex, RGB, HSL, and HSV formats. It supports the alpha channel and includes a color picker, as well as preset color options for quick selection.

### What devices is Dev Calc available on?

Dev Calc is available on iPhone, iPad, and iPod devices. It is compatible with iOS devices.

### What is the age rating for Dev Calc?

Dev Calc has an age rating of 4+, making it suitable for a wide range of users. This rating indicates it is appropriate for children and adults.

### Does Dev Calc have ads?

Yes, Dev Calc contains advertisements. There is an option to remove ads via a monthly subscription for $1.99.

### How often is Dev Calc updated?

Dev Calc was last updated on December 14, 2025, indicating recent development and support. The latest version is 2.1.4.

### What is the user sentiment for Dev Calc based on ratings?

Dev Calc has a rating of 2.0 stars from 2 ratings, suggesting a mixed or negative user reception. This indicates potential areas for improvement based on user feedback.

## Version history (last 5 releases)

### 2.1.4 — 2025-12-14

* Improve the stability.

### 2.1.3 — 2025-04-06

* Support system light / dark theme.

### 2.1.2 — 2025-01-27

* Improved stability.

### 2.1.1 — 2025-01-02

* Improved stability.

### 2.1.0 — 2024-11-08

* Add remove ads feature.

## Apps similar to Dev Calc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ask Chat – AI Assistant Bot](https://appshunter.io/ios/app/ask-chat-ai-assistant-bot/id6448439580) | 3.0 (2) | Free | Productivity |
| [LiquidText](https://appshunter.io/ios/app/liquidtext/id922765270) | 4.6 (6,341) | Free | Productivity |
| [Calcularium](https://appshunter.io/ios/app/calcularium/id824113384) | 4.6 (2,157) | Free | Productivity |
| [シンプルな電卓-広告がなく履歴や日本語表記に対応](https://appshunter.io/ios/app/id912277870) | — | Free | Productivity |
| [Photo Calc - Simple Calculator](https://appshunter.io/ios/app/photo-calc-simple-calculator/id1130778812) | 3.5 (8) | Free | Productivity |
| [ShoppingCalculator byNSDev](https://appshunter.io/ios/app/shoppingcalculator-bynsdev/id1279295619) | — | Free | Productivity |

## More apps by Toshiya Hondo

- [Bookmark Folder](https://appshunter.io/ios/app/bookmark-folder/id1571875730)
- [Focus Range](https://appshunter.io/ios/app/focus-range/id1579309326)
- [Triangle Simulator](https://appshunter.io/ios/app/triangle-simulator/id1583116107)
- [Handy Leveler](https://appshunter.io/ios/app/handy-leveler/id1586901385)
- [Favo Map](https://appshunter.io/ios/app/favo-map/id1589007227)

All apps by Toshiya Hondo: https://appshunter.io/developer/1571875732

---

*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 2026-06-04.*