# VTE Calc vs Calcium Correction

The clearest difference is in-app purchases: Calcium Correction at none against VTE Calc's 1. Calcium Correction also leads on rating (5.0 vs 4.8). VTE Calc's advantage is update cadence (every 2 days vs every 8 months) and iOS requirement (9.0 vs 12.0). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. VTE Calc sells 1 one-off in-app purchase. Calcium Correction asks for nothing beyond the download.

Calcium Correction holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

VTE Calc ships an update every 2 days, Calcium Correction every 8 months. The most recent releases landed on August 15, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | VTE Calc | Calcium Correction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/vte-calc/id1335332895/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/calcium-correction/id1456114059/reviews)** |
| Number of ratings | 4 | **5** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 8 months |
| Monetization | Free | Free |
| Size | 20 MB | 18 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Lindum Medical Ltd](https://appshunter.io/developer/1092857686) | [DOCTOT](https://appshunter.io/developer/351335901) |

## 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 |


### Calcium Correction

[App page](https://appshunter.io/ios/app/calcium-correction/id1456114059)

This medical calculator assists endocrinology specialists and general medics in adjusting calcium readings based on albumin levels. It offers a guided 'wizard' format for intuitive use, aiming to improve accuracy, efficiency, and patient safety in assessment and treatment protocols.

**Highlights:** Albumin-based calcium adjustment, Guided 'wizard' format, Patient results management, Data transfer options, Integrated information sections, Touch ID and PIN protection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VTE Calc free?

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

### Is Calcium Correction free?

Calcium Correction is free to download, with no in-app purchases.

### Which has better reviews, VTE Calc or Calcium Correction?

Calcium Correction is rated higher. VTE Calc averages 4.8 out of 5 from 4 ratings, while Calcium Correction averages 5.0 from 5 ratings.

### Do VTE Calc or Calcium Correction have ads?

Neither VTE Calc nor Calcium Correction shows ads.

### Which is updated more often, VTE Calc or Calcium Correction?

VTE Calc ships an update every 2 days, and Calcium Correction every 8 months. Most recently, VTE Calc was updated on August 15, 2026 and Calcium Correction on June 1, 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.*