# Calcium Correction vs ZoeMD

The clearest difference is in-app purchases: Calcium Correction at none against ZoeMD's 2. Calcium Correction also leads on iOS requirement (12.0 vs 15.0). ZoeMD's advantage is update cadence (every 3 weeks vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. ZoeMD sells 2 in-app purchases, starting at $25.00 per month. Calcium Correction asks for nothing beyond the download.

Calcium Correction ships an update every 8 months, ZoeMD every 3 weeks. The most recent releases landed on June 1, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Calcium Correction | ZoeMD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/calcium-correction/id1456114059/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 18 MB | 64 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [DOCTOT](https://appshunter.io/developer/351335901) | [dorascribe](https://appshunter.io/developer/1744977378) |

## What reviewers say

### 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


### ZoeMD

[App page](https://appshunter.io/ios/app/zoemd/id6747631441)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZoeMD Monthly Plan | $25.00 | per month |
| ZoeMD Yearly Plan | $249.00 | per year |


## Frequently asked questions

### Is Calcium Correction free?

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

### Is ZoeMD free?

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

### Do Calcium Correction or ZoeMD have ads?

Neither Calcium Correction nor ZoeMD shows ads.

### Which is updated more often, Calcium Correction or ZoeMD?

Calcium Correction ships an update every 8 months, and ZoeMD every 3 weeks. Most recently, Calcium Correction was updated on June 1, 2026 and ZoeMD on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*