VTE Calc vs Calcium Correction
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VTE Calc
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.
- Wells' score for DVT
- Wells' score for PE
- PERC score
- Creatinine clearance calculator
- Risk assessment tools
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VTE Calc gives you immediate access to the most commonly used scoring systems for calculating the risk of deep venous thrombosis (DVT) or pulmonary embolism (PE). It includes the Wells' scores for DVT and PE and well as the PERC score. If you need to administer low molecular weight heparins, VTE Calc has a creatinine clearance calculator built in.
Calcium Correction
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.
- Albumin-based calcium adjustment
- Guided 'wizard' format
- Patient results management
- Data transfer options
- Integrated information sections
- Touch ID and PIN protection
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INTRODUCTION: From the creators of the original iOS Clinical Diagnosis App range comes "Calcium Correction for Hypoalbuminemia", an interactive medical calculator that helps Endocrinology Specialists and General Medics alike to adjust a patient's calcium reading based upon their albumin level. APP OVERVIEW: Akin to other Doctot Apps, the care pathway within is presented in a "wizard" format, which quickly and intuitively guides the user through the various steps that are involved. Underpinned by an innovative design philosophy (please see http://www.doctot.com/key-strengths for more), this Doctot "X Series" App has been crafted to help improve the accuracy, efficiency, clarity, reliability, accessibility, usability, and speed of Calcium Correction-related assessment/treatment protocols. To assist the user, each scale has a comprehensive Information section that provides relevant background details, as well as an in-depth Help section. FURTHER FEATURES: To help meet differing needs of Medical Professionals, Doctot included within Calcium Correction for Hypoalbuminemia: - a Patient Results Management System - Patient Assessment Result Data Transfer options - Integrated Information/News sections - Touch ID and PIN Protection Security options - Networking and Messaging functionality BENEFITS: Like all of our Clinical Diagnosis Apps, Calcium Correction for Hypoalbuminemia was created to help: - Make More Informed Clinical Decisions - Enhance Patient Safety - Reduce the Risk of Medical Errors - Provide Greater Treatment Recommendations and Management Strategies - Treat and Manage Greater Patient Numbers - Save Critical Time DOWNLOAD FOR FREE: An independent, not-for-profit organisation that the likes of GOLD, the IOF and SINTEF chose to partner with, Doctot (which is spearheaded by Prof. Declan Lyons, a Consultant Geriatrician and MedTech Evangelist) are making this App available Free-Of-Charge. If you think your colleagues may benefit from it, please feel free to share the download link. Thank you so much. CREDIT: This calculation was created by Xavier Parent, MD; for more, please see: https://pubmed.ncbi.nlm.nih.gov/19654080/.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | VTE Calc | Calcium Correction |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) | 5.0 (5 ratings) — better |
| Number of ratings | 4 | 5 — better |
| Update frequency | Every 2 days — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 20 MB | 18 MB |
| Age rating | 12+ | 17+ |
| Developer | Lindum Medical Ltd | DOCTOT |
Customer experience
VTE Calc
Calcium Correction
In-app purchases
VTE Calc
- VTE Calc - remove advertising$0.99
Calcium Correction
No in-app purchases









