# Developer Calc Hex Dec Oct Bin vs くるり札

The clearest difference is iOS requirement: Developer Calc Hex Dec Oct Bin at 9.0 against くるり札's 26.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Developer Calc Hex Dec Oct Bin ships an update every 5 months, くるり札 every 7 months. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Developer Calc Hex Dec Oct Bin | くるり札 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (15 ratings)](https://appshunter.io/ios/app/developer-calc-hex-dec-oct-bin/id568750126/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 76.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Ad-supported | — |
| Size | 4 MB | 4 MB |
| Requires iOS | **9.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QQ TSUBASA](https://appshunter.io/developer/568750169) | [Jun Kishihara](https://appshunter.io/developer/1822756745) |

## What reviewers say

### Developer Calc Hex Dec Oct Bin

[App page](https://appshunter.io/ios/app/developer-calc-hex-dec-oct-bin/id568750126)

This app converts numbers between binary, octal, decimal, and hexadecimal bases on a single screen. It also displays color hex codes and RGB values simultaneously. It's designed for developers needing quick base conversions and color code referencing.

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

**Features:** macOS Compatibility

**In-app purchases:** none


### くるり札

[App page](https://appshunter.io/ios/app/id6759787649)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Developer Calc Hex Dec Oct Bin free?

Developer Calc Hex Dec Oct Bin is free to download, with no in-app purchases.

### Is くるり札 free?

くるり札 is free to download, with no in-app purchases.

### Do Developer Calc Hex Dec Oct Bin or くるり札 have ads?

Both Developer Calc Hex Dec Oct Bin and くるり札 show ads.

### Which is updated more often, Developer Calc Hex Dec Oct Bin or くるり札?

Developer Calc Hex Dec Oct Bin ships an update every 5 months, and くるり札 every 7 months. Most recently, Developer Calc Hex Dec Oct Bin was updated on October 14, 2026 and くるり札 on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*