Comparison

EMS Pro vs 4n6 Tools Lite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EMS Pro

This medical app provides emergency medical service providers with clinical decision support, calculators, and communication tools. It offers quick access to pre-hospital protocols, drug information, and hospital routing, replacing traditional printed reference materials.

Highlights
  • Pre-hospital protocols (ALS, BLS, CCT, AEMT)
  • Clinical calculators
  • Burn triage tools
  • Drug reference information
  • GPS routing to hospitals
  • Pennsylvania hospital directory
Features
Read full description

Lehigh Valley Health Network (LVHN) is proud to offer the EMS PRO app. The app was developed by LVHN's Division of EMS to provide clinical decision support, calculators, and communication tools for EMS providers in the field. EMS PRO is a useful tool while providing patient assessment, treatment, and transport and replaces the traditional printed reference materials that EMTs and Paramedics carry. EMS PRO enables providers to have quick and easy access to: -Pre-hospital ALS, BLS, CCT and AEMT protocols and calculators -Burn triage tools -Drug reference information -GPS integration with your phone for easy routing to Lehigh Valley Health Network hospitals -Listing of Pennsylvania hospitals and addresses

About

4n6 Tools Lite

Features
Read full description

4n6 Tools Lite is the basic edition of 4n6 Tools Pro, professional calculators for forensic medicine built from everyday autopsy and external-examination practice. Seven tools work fully in Lite. You can open all the others as a preview and see what the full version offers. FULLY WORKING IN LITE • Henssge rectal-temperature nomogram: time since death with a 95 % interval, the date and time of death and a timeline • Post-mortem interval from vitreous potassium: four published methods • Traub index (glucose + lactate): ante-mortem glycaemia • BMI and nutritional status • Body surface area (BSA) and expected heart weight • Age from aortic circumferences • Unit converter (mg/dL ↔ mmol/L and more) for common analytes or a custom molar mass PREVIEW OF THE PRO TOOLS Tools marked Pro can be opened and browsed in Lite: the form, the method and the references. Lite does not calculate their results. Calculation, comparison and export are offered by the separate app 4n6 Tools Pro. THE FULL PRO VERSION 4n6 Tools Pro unlocks all 27 tools: post-mortem changes, forensic entomology, post-mortem toxicology (interpretation of ethanol and 67 substances against published reference levels), burns, blood groups and stains, skeletal sex and age, DVI, forensic odontology, photogrammetry, colorimeter, desmin immunohistochemistry and microscopy, plus a shared case report and case backup. A one-time purchase, no subscription. FEATURES • Light and dark mode • Results with an interval scale • Twelve languages: Slovak, English, Czech, German, Italian, French, Ukrainian, Polish, Hungarian, Chinese (Simplified), Spanish and Portuguese (Brazil) • Works offline, entirely on-device: sends nothing and collects nothing • Methods and references with every tool • Adjustable text size, including Dynamic Type FOR WHOM Physicians and specialists in forensic medicine and pathology, examining physicians, expert witnesses and, for teaching, medical students. IMPORTANT All results are orientational and based on published methods. The app is not a medical device and does not replace the professional judgement of the examining physician or expert.

Screenshots

EMS Pro3 screens
4n6 Tools Lite4 screens

Verdict

The call

The clearest difference is update cadence: 4n6 Tools Lite at every 8 days against EMS Pro's every 3 months. EMS Pro's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

EMS Pro ships an update every 3 months, 4n6 Tools Lite every 8 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
EMS Pro versus 4n6 Tools Lite: the parameters behind the verdict, then further details
ParameterEMS Pro4n6 Tools Lite
PriceFreeFree
Rating4.6 (5 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 3 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size73 MB7 MB
Age rating17+12+
DeveloperLehigh Valley Health NetworkJan Sikuta

In-app purchases

None

EMS Pro

No in-app purchases

None

4n6 Tools Lite

No in-app purchases

Questions

Is EMS Pro free?
EMS Pro is free to download, with no in-app purchases.
Is 4n6 Tools Lite free?
4n6 Tools Lite is free to download, with no in-app purchases.
Do EMS Pro or 4n6 Tools Lite have ads?
Neither EMS Pro nor 4n6 Tools Lite shows ads.
Which is updated more often, EMS Pro or 4n6 Tools Lite?
EMS Pro ships an update every 3 months, and 4n6 Tools Lite every 8 days. Most recently, EMS Pro was updated on November 3, 2026 and 4n6 Tools Lite on November 5, 2026.

Other comparisons