# MCAS Tracker vs MCAS AI Scanner

The clearest difference is ads: MCAS Tracker at none against MCAS AI Scanner's shown. MCAS Tracker also leads on device support (4 vs 2) and iOS requirement (15.5 vs 18.0). MCAS AI Scanner's advantage is update cadence (every 2 days vs every 6 months). On price and in-app purchases there is nothing between them.

Both are free to download. MCAS Tracker sells 16 in-app purchases, starting at $4.95 per month and MCAS AI Scanner sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

MCAS Tracker ships an update every 6 months, MCAS AI Scanner every 2 days. The most recent releases landed on September 20, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | MCAS Tracker | MCAS AI Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (18 ratings)](https://appshunter.io/ios/app/mcas-tracker/id6754931863/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 238 MB | 12 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Digital Therapeutics](https://appshunter.io/developer/1721663167) | [Maximilian Krehl](https://appshunter.io/developer/1776375006) |

## What reviewers say

### 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 (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| flex pass | $4.95 | per month |
| easy pass | $7.99 | per 7 days |
| flex pass | $12.99 | per month |
| carey ai max | $19.99 | per month |
| yearly access | $19.99 | per year |
| smart pass | $19.99 | per year |
| carey ai ultra | $29.99 | per month |
| plus | $29.99 | per year |
| limited discount | $34.99 | per year |
| Premium Yearly | $34.99 | per year |
| yearly access | $39.99 | per year |
| Extended Trial | $39.99 | per year |
| full access | $49.99 | per year |
| store credit | $1.99 | one-time |
| carey ai credits | $8.99 | one-time |
| lifetime upgrade | $119.99 | one-time |


### MCAS AI Scanner

[App page](https://appshunter.io/ios/app/mcas-ai-scanner/id6787694873)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MCAS Plus Monthly | $5.99 | per month |
| MCAS Plus Annual | $34.99 | per year |


## Frequently asked questions

### Is MCAS Tracker free?

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

### Is MCAS AI Scanner free?

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

### Do MCAS Tracker or MCAS AI Scanner have ads?

MCAS AI Scanner shows ads; MCAS Tracker does not.

### Which is updated more often, MCAS Tracker or MCAS AI Scanner?

MCAS Tracker ships an update every 6 months, and MCAS AI Scanner every 2 days. Most recently, MCAS Tracker was updated on September 20, 2026 and MCAS AI Scanner on September 10, 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.*