Comparison

SubtleSTEMI vs STEMIcathAID

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

Head to head
About

SubtleSTEMI

This medical app calculates the formula from a specific research paper to help differentiate early repolarization from subtle anterior ST-segment elevation myocardial infarction. It provides a tool for medical professionals to aid in diagnosis.

Highlights
  • ECG formula implementation
  • Differentiates early repolarization
  • Identifies subtle anterior ST-segment elevation myocardial infarction
  • Diagnostic aid for medical professionals
Features
Read full description

Calculator implementing the formula from the paper, "Electrocardiographic differentiation of early repolarization from subtle anterior st-segment elevation myocardial infarction," by Smith, et al.

About

STEMIcathAID

This medical app streamlines STEMI treatment by optimizing patient recognition, response, and record-keeping. It enhances communication and coordination among healthcare providers, reducing critical time to reperfusion for high-risk patients. Features include EKG upload, cardiogenic shock assessment, and live GPS tracking.

Highlights
  • EKG upload via smartphone
  • Cardiogenic shock assessment
  • STEMI patient transfer pathway
  • Live GPS tracking of EMS
  • HIPAA compliant encrypted collaboration
  • Notification system for cath lab preparation
Features
Read full description

STEMIcathAID is a patient recognition, response, and record-keeping system designed to improve outcomes through adherence the American Heart Association’s Mission:Lifeline STEMI guidelines. Early restoration of blood flow to occluded coronary vessels has been shown to significantly improve outcomes for high-risk STEMI patients. STEMIcathAID aims to improve these clinical outcomes by optimizing their treatment following many of the recommendations of the AHA by reducing the time to STEMI recognition, lead acquisition, STEMI identification, notification of the catheterization lab, and reperfusion. There are multiple personnel and steps involved in caring for these high-risk patients. STEMIcathAID takes an algorithmic approach which will enhance the coordination and communication tasks essential to rapid assessment and easy transfer of STEMI patients from the field or outside facility. It will also provide protocols for the EMS or outside hospital provider to identify patients in cardiogenic shock even before their arrival in the catheterization lab. The application will integrate live GPS tracking of the patients alongside the time the alarm was raised prompting the sense of urgency in transferring the patient. Incorporating images, videos, illustrations, and live GPS tracking of the EMS, the design will be subdivided into three main sections: 1. EKG Upload by outside facility or EMS 2. Assessment of Cardiogenic Shock 3. STEMI patient transfer pathway When a medical provider, in the field, other hospital, or outpatient office, suspects STEMI, the provider uploads the EKG by taking a picture of it with their phone. Once the EKG is uploaded, the on-call attending at the PCI-capable facility receives a notification from the application. If the attending believes the patient is experiencing a real STEMI, the pathway is activated. Upon activation, the approximately 10-12 people involved in taking care of the patient are notified so they can begin preparations. Adhering to HIPAA compliance, all users log into the encrypted application and begin to collaborate such aspects as patient vitals, shock information, and emergency vehicle current location and estimated arrival time to the cath lab. Through the optimized communication and collaboration of multiple key players in the STEMI pathway, these time-critical, vulnerable patients can begin treatment promptly.

Screenshots

SubtleSTEMI3 screens
STEMIcathAID4 screens

Verdict

The call

The clearest difference is rating: SubtleSTEMI at 4.2 against STEMIcathAID's 3.3. SubtleSTEMI also leads on iOS requirement (10.0 vs 15.1). STEMIcathAID's advantage is update cadence (every 3 months vs every 8 months). On price, ratings volume, ads and in-app purchases 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.

ReceptionRating · Positive reviews · Number of ratings

SubtleSTEMI holds the better App Store score, 4.2 against 3.3. Both are backed by a comparable volume of ratings — 9 and 8 respectively.

UpkeepUpdate frequency

SubtleSTEMI ships an update every 8 months, STEMIcathAID every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
SubtleSTEMI versus STEMIcathAID: the parameters behind the verdict, then further details
ParameterSubtleSTEMISTEMIcathAID
PriceFreeFree
Rating4.2 (9 ratings) — better3.3 (8 ratings)
Positive reviews100.0% of reviews—
Number of ratings9 — better8
Update frequencyEvery 8 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.1
Further details — not scored
Size15 MB71 MB
Age rating17+4+
DeveloperMark NewcombIcahn School of Medicine at Mount Sinai

Customer experience

SubtleSTEMI

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

STEMIcathAID

All ratings8 ratings
Positive50.0%
Neutral12.5%
Negative37.5%

In-app purchases

None

SubtleSTEMI

No in-app purchases

None

STEMIcathAID

No in-app purchases

Questions

Is SubtleSTEMI free?
SubtleSTEMI is free to download, with no in-app purchases.
Is STEMIcathAID free?
STEMIcathAID is free to download, with no in-app purchases.
Which has better reviews, SubtleSTEMI or STEMIcathAID?
SubtleSTEMI is rated higher. SubtleSTEMI averages 4.2 out of 5 from 9 ratings, while STEMIcathAID averages 3.3 from 8 ratings.
Do SubtleSTEMI or STEMIcathAID have ads?
Neither SubtleSTEMI nor STEMIcathAID shows ads.
Which is updated more often, SubtleSTEMI or STEMIcathAID?
SubtleSTEMI ships an update every 8 months, and STEMIcathAID every 3 months. Most recently, SubtleSTEMI was updated on November 1, 2026 and STEMIcathAID on November 3, 2026.

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