# Clarus OnCall vs STS Risk Calc

The clearest difference is rating: STS Risk Calc at 5.0 against Clarus OnCall's 3.4. STS Risk Calc also leads on monetization model (free vs subscription) and iOS requirement (13.0 vs 15.6). Clarus OnCall's advantage is ratings volume (50 vs 1). On price, ads, 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.

STS Risk Calc holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Clarus OnCall has 50 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Clarus OnCall | STS Risk Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (50 ratings)](https://appshunter.io/ios/app/clarus-oncall/id889409061/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sts-risk-calc/id6737915787/reviews)** |
| Number of ratings | **50** | 1 |
| Positive reviews | 39.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Subscription | **Free** |
| Size | 26 MB | 41 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Clarus Care, LLC](https://appshunter.io/developer/783770770) | [The Society of Thoracic Surgeons](https://appshunter.io/developer/580753468) |

## What reviewers say

### Clarus OnCall

[App page](https://appshunter.io/ios/app/clarus-oncall/id889409061)

This app streamlines after-hours patient call management for healthcare providers using AI. It offers flexible notification and response options, transcribes calls into summarized messages, and enhances provider privacy and workflow efficiency without the need for a traditional call center.

**Highlights:** AI-powered call management, After-hours patient call handling, Flexible notification options, Multiple response methods, Automated call transcription, Secure message delivery, Masked caller-ID callback

**Features:** macOS Compatibility

**In-app purchases:** none


### STS Risk Calc

[App page](https://appshunter.io/ios/app/sts-risk-calc/id6737915787)

This tool assists cardiothoracic surgery teams in evaluating patient surgical risk. It utilizes current data from a national database to provide accurate risk assessments.

**Highlights:** Surgical risk assessment, Utilizes STS National Database data, For cardiothoracic surgery teams, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Clarus OnCall free?

Clarus OnCall is free to download, with no in-app purchases.

### Is STS Risk Calc free?

STS Risk Calc is free to download, with no in-app purchases.

### Which has better reviews, Clarus OnCall or STS Risk Calc?

STS Risk Calc is rated higher. Clarus OnCall averages 3.4 out of 5 from 50 ratings, while STS Risk Calc averages 5.0 from 1 ratings.

### Do Clarus OnCall or STS Risk Calc have ads?

Neither Clarus OnCall nor STS Risk Calc shows ads.

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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.*