# AcuityMD vs STS Risk Calc

The clearest difference is update cadence: AcuityMD at every 2 months against STS Risk Calc's every 16 months. AcuityMD also leads on ratings volume (19 vs 1). On price, rating, 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.

On the App Store both sit at effectively the same score — 4.9 for AcuityMD against 5.0 for STS Risk Calc. That said, the two scores are not equally well evidenced: AcuityMD has 19 ratings behind it against 1, so its average is the more settled of the two.

AcuityMD ships an update every 2 months, STS Risk Calc every 16 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | AcuityMD | STS Risk Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (19 ratings)](https://appshunter.io/ios/app/acuitymd/id1570517722/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sts-risk-calc/id6737915787/reviews)** |
| Number of ratings | **19** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 16 months |
| Monetization | Free | Free |
| Size | 45 MB | 35 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [AcuityMD, Inc.](https://appshunter.io/developer/1570517724) | [The Society of Thoracic Surgeons](https://appshunter.io/developer/580753468) |

## What reviewers say

### AcuityMD

[App page](https://appshunter.io/ios/app/acuitymd/id1570517722)

This platform empowers the MedTech industry by identifying target markets and surfacing key sales opportunities. It helps companies of all sizes understand where and how to sell faster, accelerating the adoption of medical technology.

**Highlights:** Identify target markets, Surface sales opportunities, Grow MedTech business, Accelerate technology adoption, Insights for sales strategies

**Features:** Vision Pro support

**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 AcuityMD free?

AcuityMD 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, AcuityMD or STS Risk Calc?

STS Risk Calc is rated higher. AcuityMD averages 4.9 out of 5 from 19 ratings, while STS Risk Calc averages 5.0 from 1 ratings.

### Do AcuityMD or STS Risk Calc have ads?

Neither AcuityMD nor STS Risk Calc shows ads.

### Which is updated more often, AcuityMD or STS Risk Calc?

AcuityMD ships an update every 2 months, and STS Risk Calc every 16 months. Most recently, AcuityMD was updated on October 24, 2026 and STS Risk Calc on October 24, 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.*