# The narnar app vs DeviceAID

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.

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

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.

## The numbers

| Metric | The narnar app | DeviceAID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/the-narnar-app/id1338238999/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 14 months |
| Monetization | Free | — |
| Size | 13 MB | 60 MB |
| Requires iOS | **14.3** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 12+ | 12+ |
| Developer | [narnar, LLC](https://appshunter.io/developer/1058713005) | [Cardiology Apps LLC](https://appshunter.io/developer/1639925847) |

## What reviewers say

### The narnar app

[App page](https://appshunter.io/ios/app/the-narnar-app/id1338238999)

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:** macOS Compatibility

**In-app purchases:** none


### DeviceAID

[App page](https://appshunter.io/ios/app/deviceaid/id6449780080)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*