Bone Age vs Calcium Correction
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bone Age
This medical app calculates bone age using the Tanner-Whitehouse method, offering TWII and TWIII references for 'RUS', 'TW20', and carpal scores directly in a clinical setting.
- Tanner-Whitehouse method calculation
- TWII and TWIII references
- RUS score calculation
- TW20 score calculation
- Carpal score calculation
- In-clinic use
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Calculate a bone age without using an atlas right there in clinic using the Tanner-Whitehouse method. Both TWII and TWIII references are included, to give 'RUS', 'TW20' and even carpal scores.
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 price: Calcium Correction at Free against Bone Age's $7.99. Calcium Correction also leads on rating (5.0 vs 2.3). Bone Age's advantage is update cadence (every 3 months vs every 8 months). On ratings volume, ads, in-app purchases and device support 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
Calcium Correction is free to download; Bone Age costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calcium Correction holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 5 respectively.
Bone Age ships an update every 3 months, Calcium Correction every 8 months. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.
| Parameter | Bone Age | Calcium Correction |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 2.3 (3 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 3 | 5 — better |
| Update frequency | Every 3 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 18 MB |
| Age rating | 17+ | 17+ |
| Developer | Simon Chapman | DOCTOT |
Customer experience
Bone Age
Calcium Correction
In-app purchases
Bone Age
No in-app purchases
Calcium Correction
No in-app purchases
Questions
Is Bone Age free?
Is Calcium Correction free?
Which has better reviews, Bone Age or Calcium Correction?
Do Bone Age or Calcium Correction have ads?
Which is updated more often, Bone Age or Calcium Correction?
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