Comparison

EP Calipers vs DeviceAID

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

Head to head
About

EP Calipers

This medical app allows users to measure intervals and angles on electrocardiogram (ECG) images. It's designed for healthcare professionals to accurately analyze ECGs from photos or PDFs, aiding in calculations like heart rate and QT intervals.

Highlights
  • Measure ECG intervals
  • Measure ECG angles
  • Calculate mean heart rate
  • Determine corrected QT interval
  • Analyze ECG photos and PDFs
  • Supports Brugada syndrome beta angle measurement
Features
Currently charting
Read full description

EP Calipers provides electronic calipers to measure intervals on images of electrocardiograms (ECGs) or electrophysiologic recordings. Doctors, nurses and medical technicians photograph and send ECGs to each other via email and messaging using smart phones and tablets. It is difficult and inaccurate to make measurements on these images with mechanical calipers. EP Calipers can be used to make accurate ECG measurements and do calculations such as determining mean heart rate and corrected QT interval. Angles such as the beta angle in Brugada syndrome can be measured as well. Analyze ECG images you photograph or store on your device, as well as PDF files, such as ECGs generated by the AliveCor Kardia™ device.

About

DeviceAID

Features
Read full description

DeviceAID is an educational application with many categories of devices used in both diagnostic Cath as well as interventional cardiology. With hundreds of devices to keep in your head, having a tool to get to the key few numbers can be invaluable. A basics section introduces devices, and the library section allows for the searching and filtering of devices based on some key characteristics. Current sections include Catheters, stents, balloons, atherectomy devices, access, closure, and more. Devices can be added to your personal favorites list for easy access later. For those who want to refine their knowledge of devices, quizzes with correct answer explanations are available.

Screenshots

EP Calipers4 screens
DeviceAID4 screens

Verdict

The call

The clearest difference is price: DeviceAID at Free against EP Calipers's $1.99. EP Calipers's advantage is ads (none vs shown) and update cadence (every 3 months vs every 14 months). On 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

DeviceAID is free to download; EP Calipers costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EP Calipers ships an update every 3 months, DeviceAID every 14 months. The most recent releases landed on September 13, 2026 and May 17, 2026 respectively.

Scorecard5 real differences · 6 level
EP Calipers versus DeviceAID: the parameters behind the verdict, then further details
ParameterEP CalipersDeviceAID
Price$1.99Free — better
Rating2.3 (6 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 3 months — betterEvery 14 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#159 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better18.0
Further details — not scored
Size9 MB60 MB
Age rating12+12+
DeveloperEP StudiosCardiology Apps LLC

In-app purchases

None

EP Calipers

No in-app purchases

None

DeviceAID

No in-app purchases

Questions

Is EP Calipers free?
EP Calipers costs $1.99, with no in-app purchases.
Is DeviceAID free?
DeviceAID is free to download, with no in-app purchases.
Do EP Calipers or DeviceAID have ads?
DeviceAID shows ads; EP Calipers does not.
Which is updated more often, EP Calipers or DeviceAID?
EP Calipers ships an update every 3 months, and DeviceAID every 14 months. Most recently, EP Calipers was updated on September 13, 2026 and DeviceAID on May 17, 2026.

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