# ABG Expert vs AB Blood

The clearest difference is price: ABG Expert at Free against AB Blood's $2.99. ABG Expert also leads on iOS requirement (13.0 vs 16.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

ABG Expert is free to download; AB Blood costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ABG Expert ships an update every 5 months, AB Blood every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ABG Expert | AB Blood |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.8 (9 ratings)](https://appshunter.io/ios/app/abg-expert/id885575488/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 2 MB | 5 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Brian Dale Vander Werf MD Inc](https://appshunter.io/developer/1521935908) | [Alexander Berkovich](https://appshunter.io/developer/1460157188) |

## What reviewers say

### ABG Expert

[App page](https://appshunter.io/ios/app/abg-expert/id885575488)

This medical tool provides accurate and flexible acid-base analysis for healthcare professionals. It offers detailed explanations, customizable ranges, and advanced features like anion gap correction and A-a gradient adjustments for various patient conditions and locations.

**Highlights:** Validated accuracy with real-world testing, Plausibility checks for physiologically impossible data, Automatic anion gap correction with albumin, Detailed explanations with equations, Separate or combined analysis of ABG, anion gap, A-a gradient, Customizable normal ranges for anion gap and delta gap, Age and barometric pressure adjustments for A-a gradient, Support for SI and non-SI units, Color-coded results and differential diagnoses, Adjustments for chronic respiratory conditions

**Features:** macOS Compatibility

**In-app purchases:** none


### AB Blood

[App page](https://appshunter.io/ios/app/ab-blood/id6444129189)

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

**In-app purchases:** none


## Frequently asked questions

### Is ABG Expert free?

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

### Is AB Blood free?

AB Blood costs $2.99, with no in-app purchases.

### Do ABG Expert or AB Blood have ads?

Neither ABG Expert nor AB Blood shows ads.

### Which is updated more often, ABG Expert or AB Blood?

ABG Expert ships an update every 5 months, and AB Blood every 3 months. Most recently, ABG Expert was updated on November 1, 2026 and AB Blood on November 3, 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.*