# ABG Expert vs ACLS Exam Expert

The clearest difference is in-app purchases: ABG Expert at none against ACLS Exam Expert's 3. ABG Expert also leads on iOS requirement (13.0 vs 15). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ACLS Exam Expert sells 3 in-app purchases, starting at $4.99 per month. ABG Expert asks for nothing beyond the download.

ABG Expert ships an update every 5 months, ACLS Exam Expert every 7 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | ABG Expert | ACLS Exam Expert |
| --- | --- | --- |
| Price | Free | Free |
| 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** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Free | — |
| Size | 2 MB | 119 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Brian Dale Vander Werf MD Inc](https://appshunter.io/developer/1521935908) | [Guangzhou Guang Tian Info Co., Ltd.](https://appshunter.io/developer/1181824150) |

## 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


### ACLS Exam Expert

[App page](https://appshunter.io/ios/app/acls-exam-expert/id1531452358)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MONTHLY | $4.99 | per month |
| 3 MONTHS | $9.99 | per 3 months |
| YEARLY | $19.99 | per year |


## Frequently asked questions

### Is ABG Expert free?

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

### Is ACLS Exam Expert free?

ACLS Exam Expert is free to download, with in-app purchases available.

### Do ABG Expert or ACLS Exam Expert have ads?

Neither ABG Expert nor ACLS Exam Expert shows ads.

### Which is updated more often, ABG Expert or ACLS Exam Expert?

ABG Expert ships an update every 5 months, and ACLS Exam Expert every 7 months. Most recently, ABG Expert was updated on November 1, 2026 and ACLS Exam Expert on November 7, 2026.

---

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