# MCAS Tracker vs My Tummi

The clearest difference is rating: My Tummi at 5.0 against MCAS Tracker's 4.4. My Tummi also leads on in-app purchases (none vs 16) and update cadence (every 3 weeks vs every 6 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. MCAS Tracker sells 16 in-app purchases, starting at $4.95 per month. My Tummi asks for nothing beyond the download.

My Tummi holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 21 and 8 respectively. Written reviews point the same way: 75% of MCAS Tracker's written reviews are positive against 100% of My Tummi's.

MCAS Tracker ships an update every 6 months, My Tummi every 3 weeks. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MCAS Tracker | My Tummi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (21 ratings)](https://appshunter.io/ios/app/mcas-tracker/id6754931863/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/my-tummi/id6761124782/reviews)** |
| Number of ratings | **21** | 8 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 238 MB | 63 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Digital Therapeutics](https://appshunter.io/developer/1721663167) | [Arman Ghazi](https://appshunter.io/developer/1887886913) |

## 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 |


### My Tummi

[App page](https://appshunter.io/ios/app/my-tummi/id6761124782)

Easily track your meals and symptoms to identify personal food triggers and understand their impact on your gut health. Gain insights into your diet's effects on your body and manage conditions like IBS.

**Highlights:** Log meals and symptoms, Identify food triggers, Track gut health journey, Diet and body insights, Manage IBS and intolerances

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

**In-app purchases:** none


## Frequently asked questions

### Is MCAS Tracker free?

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

### Is My Tummi free?

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

### Which has better reviews, MCAS Tracker or My Tummi?

My Tummi is rated higher. MCAS Tracker averages 4.4 out of 5 from 21 ratings, while My Tummi averages 5.0 from 8 ratings.

### Do MCAS Tracker or My Tummi have ads?

Neither MCAS Tracker nor My Tummi shows ads.

### Which is updated more often, MCAS Tracker or My Tummi?

MCAS Tracker ships an update every 6 months, and My Tummi every 3 weeks. Most recently, MCAS Tracker was updated on October 24, 2026 and My Tummi on October 31, 2026.

---

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