# ABG Expert vs SOFA ⊗

The clearest difference is rating: SOFA ⊗ at 5.0 against ABG Expert's 4.8. SOFA ⊗ also leads on iOS requirement (9.0 vs 13.0). ABG Expert's advantage is ratings volume (9 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SOFA ⊗ holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ABG Expert has 9 ratings behind it against 1, so its average is the more settled of the two.

ABG Expert ships an update every 5 months, SOFA ⊗ every 4 months. The most recent releases landed on June 9, 2026 and June 25, 2026 respectively.

## The numbers

| Metric | ABG Expert | SOFA ⊗ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (9 ratings)](https://appshunter.io/ios/app/abg-expert/id885575488/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sofa/id1317080900/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 2 MB | 9 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Brian Dale Vander Werf MD Inc](https://appshunter.io/developer/1521935908) | [Md. Mamun-Ur-Rashid](https://appshunter.io/developer/700724354) |

## 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


### SOFA ⊗

[App page](https://appshunter.io/ios/app/sofa/id1317080900)

This medical app calculates the Sequential Organ Failure Assessment (SOFA) score. It assesses organ system performance and assigns a score to determine the risk of mortality for ICU patients. A higher SOFA score indicates a greater likelihood of mortality.

**Highlights:** SOFA score calculation, Organ system assessment, Mortality risk determination, ICU patient data analysis

**In-app purchases:** none


## Frequently asked questions

### Is ABG Expert free?

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

### Is SOFA ⊗ free?

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

### Which has better reviews, ABG Expert or SOFA ⊗?

SOFA ⊗ is rated higher. ABG Expert averages 4.8 out of 5 from 9 ratings, while SOFA ⊗ averages 5.0 from 1 ratings.

### Do ABG Expert or SOFA ⊗ have ads?

Neither ABG Expert nor SOFA ⊗ shows ads.

### Which is updated more often, ABG Expert or SOFA ⊗?

ABG Expert ships an update every 5 months, and SOFA ⊗ every 4 months. Most recently, ABG Expert was updated on June 9, 2026 and SOFA ⊗ on June 25, 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.*