# Blood pH vs EMS Pathfinder

The clearest difference is price: EMS Pathfinder at Free against Blood pH's $1.99. EMS Pathfinder also leads on iOS requirement (16.4 vs 26). Blood pH's advantage is ratings volume (28 vs 6). On rating, review sentiment, update cadence and ads there is nothing between them.

EMS Pathfinder is free to download; Blood pH costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Blood pH against 5.0 for EMS Pathfinder. Both are backed by a comparable volume of ratings — 28 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Blood pH ships an update every 2 months, EMS Pathfinder every 3 months. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Blood pH | EMS Pathfinder |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (28 ratings)](https://appshunter.io/ios/app/blood-ph/id969869431/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/ems-pathfinder/id6752676004/reviews)** |
| Number of ratings | **28** | 6 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 7 MB | 147 MB |
| Requires iOS | 26 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Remarkable Edge, Lda](https://appshunter.io/developer/532882990) | [FullCode LLC](https://appshunter.io/developer/1840533567) |

## What reviewers say

### Blood pH

[App page](https://appshunter.io/ios/app/blood-ph/id969869431)

This medical app helps healthcare professionals quickly diagnose acid-base disorders in patients. It visualizes patient data on an interactive graph and offers tools to calculate Anion Gap and A-a Difference for better characterization of disturbances. Users can store and track patient evolutions graphically and share reports as PDFs.

**Highlights:** Interactive color graph for acid-base disorders, Graphical tracking of patient evolution, Anion Gap and A-a Difference calculators, Store and compare previous disturbances, Share graphs as PDF reports, Support for mmHg or KPa pressure units

**Features:** Vision Pro support

**In-app purchases:** none


### EMS Pathfinder

[App page](https://appshunter.io/ios/app/ems-pathfinder/id6752676004)

Access free, offline EMS protocols, drug references, and clinical tools tailored for mobile use. Features include interactive flowcharts, AI-powered search, and customizable tools for field professionals. Updates are free and automatic when online.

**Highlights:** Offline access to EMS protocols, Mobile-optimized protocol layouts, Interactive flowcharts, AI-enhanced search, Medication and dosing calculator, Pediatric length-based reference, CPR and incident timers

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

**In-app purchases:** none


## Frequently asked questions

### Is Blood pH free?

Blood pH costs $1.99, with no in-app purchases.

### Is EMS Pathfinder free?

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

### Which has better reviews, Blood pH or EMS Pathfinder?

EMS Pathfinder is rated higher. Blood pH averages 5.0 out of 5 from 28 ratings, while EMS Pathfinder averages 5.0 from 6 ratings.

### Do Blood pH or EMS Pathfinder have ads?

Neither Blood pH nor EMS Pathfinder shows ads.

### Which is updated more often, Blood pH or EMS Pathfinder?

Blood pH ships an update every 2 months, and EMS Pathfinder every 3 months. Most recently, Blood pH was updated on November 6, 2026 and EMS Pathfinder 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.*