# Viz.ai vs Clock Buster

The clearest difference is rating: Clock Buster at 5.0 against Viz.ai's 4.2. Clock Buster also leads on iOS requirement (15.1 vs 17.0). Viz.ai's advantage is ratings volume (36 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Clock Buster 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 6, so its average is the more settled of the two.

Viz.ai ships an update fortnightly, Clock Buster every 9 days. Both last shipped on October 3, 2026.

## The numbers

| Metric | Viz.ai | Clock Buster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (36 ratings)](https://appshunter.io/ios/app/vizai/id1222399372/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/clock-buster/id6797585802/reviews)** |
| Number of ratings | **36** | 6 |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Free | Free |
| Size | 56 MB | 45 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Viz.ai, Inc.](https://appshunter.io/developer/1222399371) | [Jessica Azevedo Horty](https://appshunter.io/developer/6797586311) |

## 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


### Clock Buster

[App page](https://appshunter.io/ios/app/clock-buster/id6797585802)

This real-time timer streamlines stroke care workflows in emergency settings. It helps medical professionals track critical intervals, calculate stroke scale metrics, and determine medication dosages. Secure live sharing keeps multidisciplinary teams synchronized for faster treatment.

**Highlights:** Real-time stroke code timing, Optimize acute ischemic stroke workflows, Minimize door-to-needle times, Track critical clinical intervals, Calculate real-time NIHSS stroke scale, Compute TNK dosing, Secure live sharing for teams

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Viz.ai free?

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

### Is Clock Buster free?

Clock Buster is free to download, with no in-app purchases.

### Which has better reviews, Viz.ai or Clock Buster?

Clock Buster is rated higher. Viz.ai averages 4.2 out of 5 from 36 ratings, while Clock Buster averages 5.0 from 6 ratings.

### Do Viz.ai or Clock Buster have ads?

Neither Viz.ai nor Clock Buster shows ads.

### Which is updated more often, Viz.ai or Clock Buster?

Viz.ai ships an update fortnightly, and Clock Buster every 9 days. Most recently, Viz.ai was updated on October 3, 2026 and Clock Buster on October 3, 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.*