Blood pH vs EMS Pathfinder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blood pH
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.
- 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
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With Blood pH, you can quickly determine the acid-base disorders of your patient, follow their evolution graphically, and see whether it’s adequately compensating for them. If it is not, Blood pH will also report the disturbance that’s preventing this. All this information is inserted visually, in a beautiful interactive graph, in order to let you better understand what’s happening. When appropriate, Blood pH also lets you calculate the Anion Gap or the A-a Difference, to obtain a better characterization of the source of the disturbance. Features: - Interactive color graph where you can plot, with a touch of the screen, your patient’s disturbance and see the relationship between pH, PaCO2, HCO3 and Standard Base Excess. - Choose between the physiological model (HCO3) or Standard Base Excess for plotting and calculate the disturbance. - Store previous disturbances and plot them on the screen to follow their evolution - Grayscale version of the graph, with increased contrast between elements - Share the color or grayscale graph as a PDF - Context sensitive Anion Gap and A-A Difference calculators to better characterize the disturbance - Insert pressures as mmHg or KPa - The A-a Difference calculator can use your current atmospheric pressure to improve its accuracy - Universal App with iPad and iPhone support
EMS Pathfinder
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.
- 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
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Free statewide and regional EMS protocols, with a drug reference and clinical tools, in one app that works without signal. No subscription, and protocol updates are free. Every protocol is rebuilt for your phone screen, so there's no pinching and zooming around a printed page or PDF. Pick your state, region or agency once and everything downloads to your device, ready for the basement, the back road or the dead zone. Updates arrive on their own the next time you're online. PROTOCOLS BUILT FOR YOUR PHONE • Native mobile layouts, color-coded by provider level • Enter your patient's details once and every dose in the protocol is worked out for them • Tap any medication, tool or linked protocol to jump straight to it • Step through interactive flowcharts one decision at a time • AI-enhanced search that understands what you mean, even offline • Favorites for the protocols, meds and tools you reach for most MEDICATIONS AND DOSING • Searchable drug reference with indications, contraindications, mechanism and dosing • Cross-linked both ways: open a drug from any protocol, or see every protocol that uses it • Dose, volume, infusion and gravity drip calculators built from your protocols • Weight in lb or kg, or ideal body weight from height • Clinically rounded results, with maximum-dose and patient-age checks CLINICAL TOOLS • Pediatric length-based reference: weights, doses and defibrillation energies by zone • Burn calculator with TBSA and Parkland fluid rates • Stroke scales (Cincinnati/FAST, BE-FAST, RACE, LAMS, VAN, FAST-ED), plus GCS, APGAR, Sgarbossa and COWS • Tidal volume, shock index, pediatric ET tube size, oxygen tank duration and common home meds • Hospital Finder with capability filters (in select states) • CPR and incident timers with event logs, with incident times in a Live Activity on your Lock Screen • Home Screen widget that opens your favorite tools in one tap BUILT FOR THE FIELD • Fully offline once downloaded, with no hunting for signal • Keep several states or agencies on your phone at once • Adjustable text size and dark mode • No ads, and no account needed for public protocols FREE PUBLIC PROTOCOLS Statewide and regional sets from across the US, plus the NASEMSO National Model EMS Clinical Guidelines, and we add new sets regularly. Open the app to see every set; no account needed. Don't see yours? Request it in the app or at emspathfinderapp.com. FOR EMS AGENCIES Give every crew member your own protocols, medications, dosing, tools, contacts, documents and forms, updated live from a web editor. You control who sees what: members get in with an account, single sign-on or an access code. Agencies can also add barcode medication administration (BCMA) scanning. Learn more at emspathfinderapp.com. A NOTE ON SAFETY EMS Pathfinder is a reference and educational tool. It does not replace medical direction, your agency's guidelines or your clinical judgment. Always check the concentration on the packaging and confirm doses against local protocol before you give them. Each public protocol set shows its source and when we last updated it. Confirm with your state or regional EMS authority and your medical director. Questions or feedback? Tap Support in the app or visit emspathfinderapp.com.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Blood pH | EMS Pathfinder |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (28 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 28 — better | 6 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 26 | 16.4 — better |
| Further details — not scored | ||
| Size | 7 MB | 147 MB |
| Age rating | 12+ | 17+ |
| Developer | Remarkable Edge, Lda | FullCode LLC |
Customer experience
Blood pH
EMS Pathfinder
In-app purchases
Blood pH
No in-app purchases
EMS Pathfinder
No in-app purchases
Questions
Is Blood pH free?
Is EMS Pathfinder free?
Which has better reviews, Blood pH or EMS Pathfinder?
Do Blood pH or EMS Pathfinder have ads?
Which is updated more often, Blood pH or EMS Pathfinder?
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