# QABA vs iGuyton

The clearest difference is in-app purchases: QABA at none against iGuyton's 1. QABA also leads on iOS requirement (12.0 vs 15.0). iGuyton's advantage is update cadence (every 15 months vs every 34 months). On price, ads and device support there is nothing between them.

Both are free to download. iGuyton sells 1 in-app purchase, starting at $9.99 per year. QABA asks for nothing beyond the download.

QABA ships an update every 34 months, iGuyton every 15 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | QABA | iGuyton |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/qaba/id872471322/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 15 months** |
| Monetization | Free | — |
| Size | 5 MB | 55 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Calum Donald](https://appshunter.io/developer/872471325) | [Pietro Bertini](https://appshunter.io/developer/1769996267) |

## What reviewers say

### QABA

[App page](https://appshunter.io/ios/app/qaba/id872471322)

This medical app provides quantitative acid-base analysis by allowing users to input blood results. It calculates key variables like Strong Ion Difference and Net Unmeasured Ions, offering a color-coded results screen and a user guide. It's designed for medical professionals to aid in clinical decision-making.

**Highlights:** Quantitative Acid Base Analysis, Blood result input, Calculates SID, NUI, Atot, Color-coded results screen, Includes User Guide, Supports additional lab values

**Features:** macOS Compatibility

**In-app purchases:** none


### iGuyton

[App page](https://appshunter.io/ios/app/iguyton-venous-return/id6749528826)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iGuyton Premium | $9.99 | per year |


## Frequently asked questions

### Is QABA free?

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

### Is iGuyton free?

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

### Do QABA or iGuyton have ads?

Neither QABA nor iGuyton shows ads.

### Which is updated more often, QABA or iGuyton?

QABA ships an update every 34 months, and iGuyton every 15 months. Most recently, QABA was updated on November 1, 2026 and iGuyton on October 30, 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.*