# MCAS Tracker vs Epitope

The clearest difference is in-app purchases: Epitope at none against MCAS Tracker's 10. Epitope also leads on update cadence (daily vs every 6 months). MCAS Tracker's advantage is device support (4 vs 1) and iOS requirement (15.5 vs 17.0). On price and ads there is nothing between them.

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

MCAS Tracker ships an update every 6 months, Epitope daily. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MCAS Tracker | Epitope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (24 ratings)](https://appshunter.io/ios/app/mcas-tracker/id6754931863/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 238 MB | 3 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Digital Therapeutics](https://appshunter.io/developer/1721663167) | [Jesus Recio](https://appshunter.io/developer/6818835280) |

## 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 (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 |


### Epitope

[App page](https://appshunter.io/ios/app/epitope-allergy-scanner/id6818835278)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MCAS Tracker free?

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

### Is Epitope free?

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

### Do MCAS Tracker or Epitope have ads?

Neither MCAS Tracker nor Epitope shows ads.

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

MCAS Tracker ships an update every 6 months, and Epitope daily. Most recently, MCAS Tracker was updated on November 10, 2026 and Epitope on October 31, 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.*