# Code Blue PRO vs QBL Calculator

The clearest difference is in-app purchases: QBL Calculator at none against Code Blue PRO's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Code Blue PRO sells 2 in-app purchases, starting at $3.99 per month. QBL Calculator asks for nothing beyond the download.

## The numbers

| Metric | Code Blue PRO | QBL Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Daily | — |
| Size | 7 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [OLIVER JAMES MORRIS](https://appshunter.io/developer/1886614962) | [Kinan Sawar](https://appshunter.io/developer/1880585294) |

## What reviewers say

### Code Blue PRO

[App page](https://appshunter.io/ios/app/code-blue-pro/id6761287489)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Code Blue PRO | $3.99 | per month |
| Code Blue PRO (Annual) | $39.99 | per year |


### QBL Calculator

[App page](https://appshunter.io/ios/app/qbl-calculator/id6783582039)

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

**In-app purchases:** none


## Frequently asked questions

### Is Code Blue PRO free?

Code Blue PRO is free to download, with in-app purchases available.

### Is QBL Calculator free?

QBL Calculator is free to download, with no in-app purchases.

### Do Code Blue PRO or QBL Calculator have ads?

Neither Code Blue PRO nor QBL Calculator shows ads.

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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.*