Viz.ai vs NIH Stroke Scale Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Viz.ai
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.
- AI-powered disease detection
- Automated CT perfusion imaging
- Mobile imaging capabilities
- HIPAA-compliant messaging
- Synchronized clinical workflows
- Remote installation
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A Telehealth Platform from the World’s Leading AI Healthcare Company. Viz.ai, which uses artificial intelligence to detect diseases like large vessel occlusions and intracerebral hemorrhages, advanced imaging to automate CT perfusion. Viz.ai also provides mobile imaging and HIPAA-compliant messaging to help synchronize workflow across multiple specialties for diseases like stroke. Fast and easy to install remotely, our plug-and-play solution is designed to help clinical teams during these challenging times. Viz LVO, Viz CTP and Viz ICH are regulated as a medical device and intended for use by trained clinicians. Indications for use are available here: https://www.viz.ai/indications-for-use/
NIH Stroke Scale Calculator
This tool helps healthcare professionals quickly assess a patient's neurologic condition for stroke-like symptoms. Its user-friendly interface streamlines the diagnosis process, saving critical time during emergencies.
- Quick neurologic assessment
- Stroke symptom evaluation
- Intuitive user interface
- Faster diagnosis
- Severity determination
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The NIH Stroke Scale Calculator is a lightweight tool for quickly assessing the neurologic condition of a patient with stroke-like symptoms to determine the presence and severity of any neurologic deficit resulting from an ischemic stroke. The intuitive, responsive UI results in a much faster diagnosis than the standard pen and paper approach to the NIH Stroke Scale thus saving precious time during a potentially life-threatening or debilitating stroke encounter.
Screenshots
Verdict
The clearest difference is rating: NIH Stroke Scale Calculator at 5.0 against Viz.ai's 4.2. NIH Stroke Scale Calculator also leads on iOS requirement (15.4 vs 17.0). Viz.ai's advantage is update cadence (fortnightly vs every 4 months) and ratings volume (36 vs 4). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NIH Stroke Scale Calculator holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Viz.ai has 36 ratings behind it against 4, so its average is the more settled of the two.
Viz.ai ships an update fortnightly, NIH Stroke Scale Calculator every 4 months. The most recent releases landed on September 16, 2026 and September 20, 2026 respectively.
| Parameter | Viz.ai | NIH Stroke Scale Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (36 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 14.3% of reviews | — |
| Number of ratings | 36 — better | 4 |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.4 — better |
| Further details — not scored | ||
| Size | 56 MB | 2 MB |
| Age rating | 12+ | 17+ |
| Developer | Viz.ai, Inc. | US Department of Veterans Affairs (VA) |
Customer experience
Viz.ai
NIH Stroke Scale Calculator
In-app purchases
Viz.ai
No in-app purchases
NIH Stroke Scale Calculator
No in-app purchases
Questions
Is Viz.ai free?
Is NIH Stroke Scale Calculator free?
Which has better reviews, Viz.ai or NIH Stroke Scale Calculator?
Do Viz.ai or NIH Stroke Scale Calculator have ads?
Which is updated more often, Viz.ai or NIH Stroke Scale Calculator?
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