# Developer Calc Hex Dec Oct Bin vs Omnia Reader

The clearest difference is in-app purchases: Developer Calc Hex Dec Oct Bin at none against Omnia Reader's 1. Developer Calc Hex Dec Oct Bin also leads on iOS requirement (9.0 vs 26.0). Omnia Reader's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Omnia Reader sells 1 one-off in-app purchase. Developer Calc Hex Dec Oct Bin asks for nothing beyond the download.

Developer Calc Hex Dec Oct Bin ships an update every 5 months, Omnia Reader every 2 weeks. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Developer Calc Hex Dec Oct Bin | Omnia Reader |
| --- | --- | --- |
| 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** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 4 MB | 8 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QQ TSUBASA](https://appshunter.io/developer/568750169) | [LiChuan Lin](https://appshunter.io/developer/1895785594) |

## 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


### Omnia Reader

[App page](https://appshunter.io/ios/app/omnia-reader/id6784663352)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $9.99 | one-time |


## 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 Omnia Reader free?

Omnia Reader is free to download, with in-app purchases available.

### Do Developer Calc Hex Dec Oct Bin or Omnia Reader have ads?

Developer Calc Hex Dec Oct Bin shows ads; Omnia Reader does not.

### Which is updated more often, Developer Calc Hex Dec Oct Bin or Omnia Reader?

Developer Calc Hex Dec Oct Bin ships an update every 5 months, and Omnia Reader every 2 weeks. Most recently, Developer Calc Hex Dec Oct Bin was updated on September 22, 2026 and Omnia Reader on September 9, 2026.

---

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