Comparison

Glucose Watch vs MCAS Tracker

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

Head to head
About

Glucose Watch

Track vital health metrics like glucose, blood pressure, and nutrition directly from your watch. Visualize trends with color-coded readings and customizable complications. Integrates with health apps for comprehensive data management.

Highlights
  • Standalone watch tracking
  • Color-coded glucose and BP readings
  • Nutrition facts tracking (calories, carbs, etc.)
  • Activity tracking (sleep, steps, exercise)
  • Customizable watch complications
  • BMI calculation
  • Glucose and nutrition trend charts
Features
Read full description

Glucose Watch app is a watch standalone and colour coded app that allows to track glucose, blood-pressure, nutrition facts such as calories, carbs, fat, fiber, protein, cholesterol, sodium and water; activity such as sleep, steps, exercise stored in Health app or Nutrition+ app via Health integration or https://glucoseplusapp.com account integration. Allows to add quickly water to Health and Nutrition+ app App allows to register by voice and/or read stored glucose, blood pressure, nutrition and activity then it displays them with colour coded digits making easy and intuitive readings base on entered personal limits on the watch. User has the option to read data from iPhone health only or integrate the app to glucoseplusapp.com to stored over-there the levels limits. App allows to customize a filled or ring gauge complication on the watch screen to displays the latest stored level of your preference, the app automatically syncs the latest levels keeping the complication updated. Main screen main button allows to display one by one all the readings as well, it will display in blue or green when are good and on red when are exceeded their respective customized limits. Allows to read weight and height stored in the iPhone health user account to calculate and store back the respective body mass index BMI. Allows to display bar and line charts with a month of glucose readings to see the trends or it shows nutrition facts rings to show your current calories, carbs, fat, fiber, cholesterol, protein, sodium and water level anytime just looking at your Apple watch screen. Allows to create custom notifications to ask the user to enter or read the glucose readings. Notifies about high levels of glucose or high/low levels of nutrition facts, also advises by voice when app is active. In order the app to be able to read data from the iPhone health, the user has to setup an account on the health app or https://glucoseplusapp.com web site.

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/

Screenshots

MCAS Tracker4 screens

Verdict

The call

The clearest difference is review sentiment: MCAS Tracker at 75% against Glucose Watch's 0%. MCAS Tracker also leads on price (Free vs $2.99) and rating (4.5 vs 1.0). Glucose Watch's advantage is in-app purchases (none vs 16) and update cadence (monthly vs every 6 months). On ads 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

MCAS Tracker is free to download; Glucose Watch costs $2.99 up front. MCAS Tracker sells 16 in-app purchases, starting at $4.95 per month. Glucose Watch asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MCAS Tracker holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: MCAS Tracker has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Glucose Watch's written reviews are positive against 75% of MCAS Tracker's.

UpkeepUpdate frequency

Glucose Watch ships an update monthly, MCAS Tracker every 6 months. The most recent releases landed on September 15, 2026 and September 20, 2026 respectively.

Scorecard9 real differences · 1 level
Glucose Watch versus MCAS Tracker: the parameters behind the verdict, then further details
ParameterGlucose WatchMCAS Tracker
Price$2.99Free — better
Rating1.0 (1 ratings)4.5 (18 ratings) — better
Positive reviews0.0% of reviews75.0% of reviews — better
Number of ratings118 — better
Update frequencyMonthly — betterEvery 6 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS26.015.5 — better
Further details — not scored
Size5 MB238 MB
Age rating12+4+
DeveloperEdison CuencaDigital Therapeutics

Customer experience

Glucose Watch

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

MCAS Tracker

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

In-app purchases

None

Glucose Watch

No in-app purchases

16 purchases

MCAS Tracker

Subscriptions13
  • flex pass$4.951 Month
  • easy pass$7.997 Days
  • flex pass$12.991 Month
Show 10 more
  • carey ai max$19.991 Month
  • yearly access$19.991 Year
  • smart pass$19.991 Year
  • carey ai ultra$29.991 Month
  • plus$29.991 Year
  • limited discount$34.991 Year
  • Premium Yearly$34.991 Year
  • yearly access3 Days trial$39.991 Year
  • Extended Trial3 Days trial$39.991 Year
  • full access7 Days trial$49.991 Year
One-time3
  • store credit$1.99
  • carey ai credits$8.99
  • lifetime upgrade$119.99

Questions

Is Glucose Watch free?
Glucose Watch costs $2.99, with no in-app purchases.
Is MCAS Tracker free?
MCAS Tracker is free to download, with in-app purchases available.
Which has better reviews, Glucose Watch or MCAS Tracker?
MCAS Tracker is rated higher. Glucose Watch averages 1.0 out of 5 from 1 ratings, while MCAS Tracker averages 4.5 from 18 ratings.
Do Glucose Watch or MCAS Tracker have ads?
Neither Glucose Watch nor MCAS Tracker shows ads.
Which is updated more often, Glucose Watch or MCAS Tracker?
Glucose Watch ships an update monthly, and MCAS Tracker every 6 months. Most recently, Glucose Watch was updated on September 15, 2026 and MCAS Tracker on September 20, 2026.

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