Comparison

The narnar app vs DeviceAID

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

Head to head
About

The narnar app

This application aids researchers in processing and quantifying perfusion studies for contrast-enhanced ultrasound. It supports various organs and research protocols, offering real-time analysis of microvascular blood flow.

Highlights
  • Perfusion study processing
  • Quantification of microvascular blood flow
  • Supports various organs and research protocols
  • Automatic and manual image alignment
  • Real-time time-videointensity curve analysis
  • Parametric imaging of blood flow
Features
Read full description

The ​narnar app for contrast-enhanced ultrasound (CEUS) allows researchers to process and quantify perfusion studies of various organs (e.g., heart, kidney, liver, skeletal muscle), acquired across a range of research protocols, including cardiac realtime, cardiac triggered and generic realtime studies. ​Key features include: • Automatic and manual image alignment • Color-coding of digitally-subtracted images • Averaged and maximum intensity projection (MIP) imaging • Quantification and modeling of microvascular blood flow from time-videointensity curves, calculated in real-time. • Parametric imaging of blood flow and velocity

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

DeviceAID4 screens

Verdict

The call

The clearest difference is ads: The narnar app at none against DeviceAID's shown. The narnar app also leads on update cadence (every 3 months vs every 14 months) and iOS requirement (14.3 vs 18.0). On price, 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

The narnar app ships an update every 3 months, DeviceAID every 14 months. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
The narnar app versus DeviceAID: the parameters behind the verdict, then further details
ParameterThe narnar appDeviceAID
PriceFreeFree
Rating4.8 (8 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 3 months — betterEvery 14 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPhone, iPad — better
Requires iOS14.3 — better18.0
Further details — not scored
Size13 MB60 MB
Age rating12+12+
Developernarnar, LLCCardiology Apps LLC

In-app purchases

None

The narnar app

No in-app purchases

None

DeviceAID

No in-app purchases

Questions

Is The narnar app free?
The narnar app is free to download, with no in-app purchases.
Is DeviceAID free?
DeviceAID is free to download, with no in-app purchases.
Do The narnar app or DeviceAID have ads?
DeviceAID shows ads; The narnar app does not.
Which is updated more often, The narnar app or DeviceAID?
The narnar app ships an update every 3 months, and DeviceAID every 14 months. Most recently, The narnar app was updated on October 16, 2026 and DeviceAID on October 6, 2026.

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