Comparison

MCAS Tracker vs Histamine Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MCAS Tracker

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
Read full description

This MCAS Tracker helps you manage mast cell activation symptoms through structured tracking, advanced analytics, and personalized insights. Designed for people living with Mast Cell Activation Syndrome, it provides clarity around reactions, histamine triggers, and symptom cycles, helping you understand what causes flare-ups and how to prevent them. With precise tools for daily tracking, it transforms complex data into actionable health insights. Track and Understand Your Reactions - Quick symptom tracking - Record hives, itching, flushing, headaches, GI distress, or breathing issues in seconds to capture your full experience. - Food and supplement logs - Track meals, ingredients, and supplements to uncover patterns that cause histamine intolerance or trigger mast cell reactions. - Trigger identification - Log environmental, emotional, and seasonal factors to discover what contributes to your flare-ups. - Advanced analytics - View charts and correlations linking food, stress, sleep, and reactions to pinpoint your top triggers and patterns over time. - Medication tracking - Log antihistamines, mast cell stabilizers, or EpiPen use to monitor effectiveness and consistency. - Daily health journal - Combine symptom notes, mood, and activity levels for a complete picture of your condition each day. - Secure, exportable reports - Generate PDF or CSV summaries to share with allergists, immunologists, or healthcare providers for data-driven care. - Encrypted storage - Protect sensitive health data with strong encryption and optional Face ID or Touch ID authentication. Built for Daily Use - Simple, user-friendly design - Quickly record symptoms and insights without extra effort. - Apple Health integration - Sync metrics like heart rate, sleep, and activity to understand how physical health impacts mast cell responses. - Personalized reminders - Stay on track with alerts for medications, hydration, meals, or journaling. - Goal tracking - Set goals like reducing flare frequency or improving sleep quality and visualize progress through trend charts. - Correlation analysis - Identify which foods, times, or environments consistently cause flare-ups or relief. - Offline and cloud backup - Log entries anytime with automatic syncing when reconnected. - Regular updates - Access new tools and refinements designed to make symptom tracking effortless and accurate. Go Beyond Reaction Tracking - Custom MCAS tracker plan - Follow guided steps to monitor symptoms, medications, and triggers across days or weeks. - Comprehensive health record - Track everything from diet, supplements, sleep, and bowel patterns to stress and emotional states in one connected system. - Educational insights - Learn about mast cell activation, low-histamine diets, and lifestyle adjustments that support stability. - Lab and test logging - Record lab results and notes from medical appointments to maintain a complete personal health record. - Activity and wellness tracking - Track rest, exercise, and stress to balance recovery and prevent overexertion. Start Managing MCAS with Confidence Setup is fast - start logging symptoms, tracking reactions, and uncovering your personal triggers in minutes. Choose a flexible subscription plan and manage it directly through the Apple Store. Every feature in this tracker is built to help you identify patterns, reduce uncertainty, and feel more in control of your health. Transform data into understanding and find the balance your body needs. Start tracking today to uncover your triggers and take the next step toward stability and better quality of life. Any insights provided by this MCAS Tracker do not constitute medical advice. The app is designed for tracking purposes only and is not intended to diagnose, treat, cure, or prevent any disease or condition. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Histamine Tracker

This app helps you identify patterns between your food intake and physical symptoms. It offers features like food scanning, symptom logging, and personalized daily findings to help you understand and manage histamine intolerance.

Highlights
  • Scan food with camera for histamine levels
  • Log meals, symptoms, supplements, and activities
  • Personalized daily findings to surface patterns
  • Browse 1,000+ foods rated by histamine level
  • Export journal and reports for health practitioners
  • Low-histamine meal ideas and articles
Features
Read full description

Fatigue, bloating, brain fog, flushing, anxiety -- if you've spent years dealing with symptoms like these without answers, you're not alone. Histamine Tracker surfaces patterns in your logged data -- connecting what you ate hours earlier to how you feel later -- so you can explore observations you might otherwise miss. SCAN FOOD WITH YOUR CAMERA Point your phone at any meal, menu, or ingredient label and instantly see its histamine level. No searching, no typing -- just snap and know what you're dealing with. TRACK YOUR WAY Log meals, symptoms, supplements, and activities naturally. Just type what you ate or how you feel -- no tedious dropdowns or calorie counting. DAILY FINDINGS THAT SURFACE PATTERNS After you log entries, the app automatically generates a personalized daily finding. It surfaces patterns in your own data -- connecting meals logged hours earlier to symptoms you noticed later -- and suggests observations worth exploring. 1,000+ FOODS RATED BY HISTAMINE LEVEL Browse a comprehensive food database organized by category. Every food is rated Low, Moderate, or High histamine so you can make more informed choices. EXPAND YOUR DIET WITH CONFIDENCE Many people with histamine intolerance eliminate too many foods unnecessarily. Your logged data helps surface which foods may be worth exploring further, so you can expand your diet with more confidence. SET GOALS, GET PERSONALIZED INSIGHTS Tell the app which foods you want to avoid, your ideal sleep schedule, and your wellness goals. Every finding is based on your own entries and personal goals. SHARE WITH YOUR HEALTH PRACTITIONER Export your full journal and daily reports in a clean format you can paste into an email or bring to an appointment. LOW-HISTAMINE MEAL IDEAS & ARTICLES Browse curated low-histamine meal ideas by category and read articles about managing histamine intolerance and feeling better day to day. BUILT BY SOMEONE WHO LIVES WITH HISTAMINE INTOLERANCE After years of struggling with histamine intolerance, insomnia, and chronic pain, I worked with nutritionists, therapists, and sleep specialists to understand how food, sleep, stress, and daily habits affect my symptoms. What I kept wishing for was a simple way to track everything together. So I built it. I use Histamine Tracker every day, and I hope it helps you too. Histamine Tracker is for informational and personal tracking purposes only and does not provide medical advice, diagnosis, or treatment. Not a substitute for professional medical advice. --- SUBSCRIPTION INFORMATION Histamine Tracker Premium is available as a monthly or yearly subscription (each with a 7-day free trial) or a one-time lifetime purchase with no renewals. Subscriptions bill to your Apple ID and auto-renew unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://lionbb.com/legal/histamine-tracker/terms/ Privacy Policy: https://lionbb.com/legal/histamine-tracker/privacy/

Screenshots

MCAS Tracker4 screens
Histamine Tracker4 screens

Verdict

The call

The clearest difference is ads: MCAS Tracker at none against Histamine Tracker's shown. Histamine Tracker's advantage is update cadence (every 2 days vs every 6 months) and rating (4.8 vs 4.4). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MCAS Tracker sells 10 in-app purchases, starting at $7.99 per 7 days and Histamine Tracker sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Histamine Tracker holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 21 and 44 respectively. Written reviews point the same way: 75% of MCAS Tracker's written reviews are positive against 96% of Histamine Tracker's.

UpkeepUpdate frequency

MCAS Tracker ships an update every 6 months, Histamine Tracker every 2 days. The most recent releases landed on November 1, 2026 and November 9, 2026 respectively.

Scorecard4 real differences · 6 level
MCAS Tracker versus Histamine Tracker: the parameters behind the verdict, then further details
ParameterMCAS TrackerHistamine Tracker
PriceFreeFree
Rating4.4 (21 ratings)4.8 (44 ratings) — better
Positive reviews75.0% of reviews96.4% of reviews — better
Number of ratings2144 — better
Update frequencyEvery 6 monthsEvery 2 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.515.1 — better
Further details — not scored
Size238 MB70 MB
Age rating4+4+
DeveloperDigital TherapeuticsLion, LLC

Customer experience

MCAS Tracker

All ratings18 ratings
Positive83.3%
Neutral11.1%
Negative5.6%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Histamine Tracker

All ratings42 ratings
Positive95.2%
Neutral0.0%
Negative4.8%
Written reviews28 reviews
Positive96.4%
Neutral0.0%
Negative3.6%

In-app purchases

10 purchases

MCAS Tracker

Subscriptions8
  • easy pass$7.997 Days
  • flex pass$12.991 Month
  • carey ai max$19.991 Month
Show 5 more
  • carey ai ultra$29.991 Month
  • plus$29.991 Year
  • limited discount$34.991 Year
  • yearly access3 Days trial$39.991 Year
  • Extended Trial3 Days trial$39.991 Year
One-time2
  • carey ai credits$8.99
  • lifetime upgrade$119.99
5 purchases

Histamine Tracker

Subscriptions4
  • Monthly7 Days trial$9.991 Month
  • Monthly7 Days trial$19.991 Month
  • Yearly7 Days trial$49.991 Year
Show 1 more
  • Yearly7 Days trial$59.991 Year
One-time1
  • Lifetime Access$59.99

Questions

Is MCAS Tracker free?
MCAS Tracker is free to download, with in-app purchases available.
Is Histamine Tracker free?
Histamine Tracker is free to download, with in-app purchases available.
Which has better reviews, MCAS Tracker or Histamine Tracker?
Histamine Tracker is rated higher. MCAS Tracker averages 4.4 out of 5 from 21 ratings, while Histamine Tracker averages 4.8 from 44 ratings.
Do MCAS Tracker or Histamine Tracker have ads?
Histamine Tracker shows ads; MCAS Tracker does not.
Which is updated more often, MCAS Tracker or Histamine Tracker?
MCAS Tracker ships an update every 6 months, and Histamine Tracker every 2 days. Most recently, MCAS Tracker was updated on November 1, 2026 and Histamine Tracker on November 9, 2026.

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