# Developer Calc Hex Dec Oct Bin vs CHW Watch

The clearest difference is ads: CHW Watch at none against Developer Calc Hex Dec Oct Bin's shown. CHW Watch also leads on update cadence (every 2 weeks vs every 5 months). Developer Calc Hex Dec Oct Bin's advantage is iOS requirement (9.0 vs 13.0). On price, in-app purchases and device support 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, CHW Watch every 2 weeks. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Developer Calc Hex Dec Oct Bin | CHW Watch |
| --- | --- | --- |
| 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 | **No** |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 4 MB | 26 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QQ TSUBASA](https://appshunter.io/developer/568750169) | [Shih You tzu](https://appshunter.io/developer/1792443758) |

## 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


### CHW Watch

[App page](https://appshunter.io/ios/app/chw-watch/id6740995334)

**Features:** macOS Compatibility

**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 CHW Watch free?

CHW Watch is free to download, with no in-app purchases.

### Do Developer Calc Hex Dec Oct Bin or CHW Watch have ads?

Developer Calc Hex Dec Oct Bin shows ads; CHW Watch does not.

### Which is updated more often, Developer Calc Hex Dec Oct Bin or CHW Watch?

Developer Calc Hex Dec Oct Bin ships an update every 5 months, and CHW Watch every 2 weeks. Most recently, Developer Calc Hex Dec Oct Bin was updated on September 22, 2026 and CHW Watch on September 20, 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.*