# mCAS vs MCAS Tracker

The clearest difference is in-app purchases: mCAS at none against MCAS Tracker's 10. mCAS also leads on update cadence (monthly vs every 6 months). MCAS Tracker's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. MCAS Tracker sells 10 in-app purchases, starting at $7.99 per 7 days. mCAS asks for nothing beyond the download.

mCAS ships an update monthly, MCAS Tracker every 6 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | mCAS | MCAS Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (21 ratings)](https://appshunter.io/ios/app/mcas-tracker/id6754931863/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 249 MB | 238 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Assurance Technology Pte Ltd](https://appshunter.io/developer/1115569550) | [Digital Therapeutics](https://appshunter.io/developer/1721663167) |

## What reviewers say

### mCAS

[App page](https://appshunter.io/ios/app/mcas/id1227608548)

**Features:** Vision Pro support

**In-app purchases:** none


### MCAS Tracker

[App page](https://appshunter.io/ios/app/mcas-tracker/id6754931863)

This app helps individuals manage Mast Cell Activation Syndrome by tracking symptoms, food intake, and environmental triggers. It offers advanced analytics to identify patterns and provides secure, exportable reports for healthcare providers. The app aims to offer clarity and actionable insights for better health management.

**Highlights:** Symptom tracking (hives, itching, flushing), Food and supplement logging, Trigger identification (environmental, emotional), Advanced analytics and correlation analysis, Medication tracking, Daily health journal, Secure, exportable reports

**Features:** macOS Compatibility, Siri integration, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| easy pass | $7.99 | per 7 days |
| flex pass | $12.99 | per month |
| carey ai max | $19.99 | per month |
| carey ai ultra | $29.99 | per month |
| plus | $29.99 | per year |
| limited discount | $34.99 | per year |
| yearly access | $39.99 | per year |
| Extended Trial | $39.99 | per year |
| carey ai credits | $8.99 | one-time |
| lifetime upgrade | $119.99 | one-time |


## Frequently asked questions

### Is mCAS free?

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

### Is MCAS Tracker free?

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

### Do mCAS or MCAS Tracker have ads?

Neither mCAS nor MCAS Tracker shows ads.

### Which is updated more often, mCAS or MCAS Tracker?

mCAS ships an update monthly, and MCAS Tracker every 6 months. Most recently, mCAS was updated on November 6, 2026 and MCAS Tracker on November 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.*