# VTE Calc vs Embolus

The clearest difference is update cadence: VTE Calc at every 2 days against Embolus's every 2 months. VTE Calc also leads on monetization model (free vs free with in-app purchases) and iOS requirement (9.0 vs 18.0). Embolus's advantage is ratings volume (16 vs 4). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. VTE Calc sells 1 one-off in-app purchase and Embolus sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for VTE Calc against 4.7 for Embolus. Both are backed by a comparable volume of ratings — 4 and 16 respectively.

VTE Calc ships an update every 2 days, Embolus every 2 months. The most recent releases landed on August 15, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | VTE Calc | Embolus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/vte-calc/id1335332895/reviews)** | [4.7 (16 ratings)](https://appshunter.io/ios/app/embolus/id1483032289/reviews) |
| Number of ratings | 4 | **16** |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 43 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Lindum Medical Ltd](https://appshunter.io/developer/1092857686) | [Sang Medicine Ltd](https://appshunter.io/developer/1483032288) |

## What reviewers say

### VTE Calc

[App page](https://appshunter.io/ios/app/vte-calc/id1335332895)

This medical app provides quick access to common scoring systems for calculating the risk of deep venous thrombosis (DVT) or pulmonary embolism (PE). It includes Wells' scores for DVT and PE, the PERC score, and a built-in creatinine clearance calculator for administering low molecular weight heparins.

**Highlights:** Wells' score for DVT, Wells' score for PE, PERC score, Creatinine clearance calculator, Risk assessment tools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VTE Calc - remove advertising | $0.99 | one-time |


### Embolus

[App page](https://appshunter.io/ios/app/embolus/id1483032289)

This app provides clinical case studies and data interpretation exercises focused on laboratory haemostasis. It's designed to test and improve your knowledge for postgraduate Haematology exams and offers realistic patient and lab data.

**Highlights:** 70 clinical cases, 6 key haemostasis areas, Realistic patient data, Lab data interpretation, Exam question familiarization, Progress tracking

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Screening Tests | $1.99 | one-time |
| Factor Assays | $1.99 | one-time |
| Platelet Function Tests | $1.99 | one-time |
| Genetic Tests | $1.99 | one-time |
| Thrombophilia Tests | $1.99 | one-time |
| Miscellaneous Tests | $1.99 | one-time |
| Cloud Sync | $1.99 | one-time |
| Haemostasis | $9.99 | one-time |


## Frequently asked questions

### Is VTE Calc free?

VTE Calc is free to download, with in-app purchases available.

### Is Embolus free?

Embolus is free to download, with in-app purchases available.

### Which has better reviews, VTE Calc or Embolus?

VTE Calc is rated higher. VTE Calc averages 4.8 out of 5 from 4 ratings, while Embolus averages 4.7 from 16 ratings.

### Do VTE Calc or Embolus have ads?

Neither VTE Calc nor Embolus shows ads.

### Which is updated more often, VTE Calc or Embolus?

VTE Calc ships an update every 2 days, and Embolus every 2 months. Most recently, VTE Calc was updated on August 15, 2026 and Embolus on September 7, 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.*