# Viz.ai vs SIR Guidelines

The clearest difference is rating: SIR Guidelines at 5.0 against Viz.ai's 4.2. SIR Guidelines also leads on iOS requirement (15.1 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

SIR Guidelines holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 36 and 23 respectively.

Viz.ai ships an update fortnightly, SIR Guidelines every 3 weeks. The most recent releases landed on September 16, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Viz.ai | SIR Guidelines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (36 ratings)](https://appshunter.io/ios/app/vizai/id1222399372/reviews) | **[5.0 (23 ratings)](https://appshunter.io/ios/app/sir-guidelines/id1552455529/reviews)** |
| Number of ratings | **36** | 23 |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 56 MB | 28 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Viz.ai, Inc.](https://appshunter.io/developer/1222399371) | [Society of Interventional Radiology](https://appshunter.io/developer/508819578) |

## What reviewers say

### Viz.ai

[App page](https://appshunter.io/ios/app/vizai/id1222399372)

This AI-powered telehealth platform assists clinicians in detecting critical diseases like stroke through advanced imaging analysis. It automates workflows and provides mobile imaging with HIPAA-compliant messaging to synchronize care across specialties.

**Highlights:** AI-powered disease detection, Automated CT perfusion imaging, Mobile imaging capabilities, HIPAA-compliant messaging, Synchronized clinical workflows, Remote installation

**Features:** macOS Compatibility

**In-app purchases:** none


### SIR Guidelines

[App page](https://appshunter.io/ios/app/sir-guidelines/id1552455529)

Access evidence-based recommendations and tools for healthcare professionals. Features an interactive calculator for scenario-specific anticoagulation and antibiotic advice, simplifying clinical decision-making at the point of care.

**Highlights:** Access published guidelines and statements, Interactive periprocedural recommendation calculator, Scenario-specific anticoagulation and antibiotic recommendations, Tailored recommendations based on patient and procedural risk, Clinical Practice Guidelines for IVC Filters, Continual updates with new guidelines and tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Viz.ai free?

Viz.ai is free to download, with no in-app purchases.

### Is SIR Guidelines free?

SIR Guidelines is free to download, with no in-app purchases.

### Which has better reviews, Viz.ai or SIR Guidelines?

SIR Guidelines is rated higher. Viz.ai averages 4.2 out of 5 from 36 ratings, while SIR Guidelines averages 5.0 from 23 ratings.

### Do Viz.ai or SIR Guidelines have ads?

Neither Viz.ai nor SIR Guidelines shows ads.

### Which is updated more often, Viz.ai or SIR Guidelines?

Viz.ai ships an update fortnightly, and SIR Guidelines every 3 weeks. Most recently, Viz.ai was updated on September 16, 2026 and SIR Guidelines on September 10, 2026.

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