GEMAST vs MCAS Journey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GEMAST
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La mastocitosis engloba un grupo heterogéneo de enfermedades poco frecuentes, caracterizado por la proliferación y la acumulación de mastocitos en diferentes órganos y tejidos. La vigente clasificación de la Organización Mundial de la Salud (OMS), actualizada en 2022, distingue ocho formas clínicas: mastocitosis cutánea, mastocitosis de médula ósea, mastocitosis sistémica indolente, mastocitosis sistémica quiescente (smoldering), mastocitosis sistémica agresiva, mastocitosis sistémica asociada a neoplasia hematológica, leucemia de mastocitos y sarcoma de mastocitos. Además, la OMS reconoce la existencia de una variante biológica denominada mastocitosis sistémica bien diferenciada, que puede ocurrir en cada subtipo de mastocitosis sistémica. Ese mismo año, la OMS incorporó algunos cambios en los criterios diagnósticos de la enfermedad. Al tratarse de una patología poco frecuente, su correcta identificación puede suponer un proceso complejo para las distintas especialidades médicas involucradas en su diagnóstico, las cuales es muy importante que trabajen de forma multidisciplinar. Con el fin de mejorar el proceso diagnóstico de la mastocitosis y mejorar la calidad de vida de los pacientes, el Grupo Español de Mastocitosis Sistémica Avanzada (GEMAST), perteneciente a la Sociedad Española de Hematología y Hemoterapia (SEHH), con la colaboración de Blueprint Medicines y Novartis, ha desarrollado la aplicación para dispositivo móvil de ayuda en la identificación y el diagnóstico de la mastocitosis sistémica. La aplicación incluye los cambios incorporados por la OMS en la clasificación y los criterios diagnósticos de la enfermedad, así como el score REMA para la selección de aquellos pacientes con síntomas sistémicos de activación mastocitaria sin lesiones cutáneas que son candidatos a estudio de médula ósea, los criterios propuestos por la Red Española de Mastocitosis (REMA) para el diagnóstico de mastocitosis sistémica bien diferenciada y los scores pronósticos más relevantes propuestos en los últimos años. ATENCIÓN Esta App no sustituye el consejo de un médico. Antes de tomar cualquier decisión contacte con un especialista.
MCAS Journey
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Join 200,000+ users in the Health Journey Community. MCAS Journey is an AI health tracker that connects your mast cell reactions, severe histamine responses, and daily habits to help you identify personal triggers and manage flare-ups. Built for quick, customizable logging, it links your hives, flushing, respiratory shifts, and brain fog with your medications, lab markers, stress, sleep, diet, and environment so you can manage your health with confidence. COMPREHENSIVE DAILY TRACKER (80+ BIO-MARKERS) - Cutaneous & Flush Reactions: Track hives (urticaria), sudden flushing, itching, dermatographism, and facial swelling. - Respiratory & Cardiovascular: Log shortness of breath, wheezing, throat tightness, dizziness, and blood pressure shifts. - GI & Histamine Flares: Record severe bloating, abdominal cramping, nausea, diarrhea, and acid reflux. - Neurological & Systemic: Track brain fog, chronic fatigue, dysautonomia spikes, headaches, and body aches. - Environmental & Food Triggers: Track high-histamine foods, temperature shifts, stress, chemical exposures, and exercise. - Custom Trackers: Add your own unique symptoms, custom triggers, and tailored bio-markers. INTEGRATED HEALTH TOOLS - My Flare-up Log: Record acute allergic flares, anaphylactic episodes, and reaction spikes to isolate immediate triggers. - My Meds: Log H1/H2 blockers (Cetirizine, Famotidine), Cromolyn Sodium, Xolair, EpiPen, and targeted supplements. - My Labs: Track Tryptase, Histamine, Chromogranin A, IgE panels, and routine immune markers over time. - My Care Team: Store contacts, log visit notes, prepare AI-guided questions, and export doctor PDF reports. - My Health Score: Monitor overall health score, reaction trends, and medium-term progress over time. - My Assessments: Take clinical screenings to track MCAS severity, histamine impact, and quality of life. - My Goals: Get actionable goals tailored to your context—like low-histamine choices, pacing, or hydration. PERSONALIZED AI LEARN & INSIGHTS - AI Health Companion: Ask anything about your health and get real-time answers based on your history. - Daily Journal: Get supportive insights on daily triggers—e.g., balancing food choices with stress or sleep. - Knowledge Center: Get instant answers from medically reviewed sources tailored to your symptoms and history. WHY MCAS JOURNEY? - Privacy-First: Your health data is 100% encrypted and never sold. - Multi-Condition Tracking: Manage overlapping symptoms and multiple conditions. - Clinical Reports: Easily export PDF summaries for your doctor. - Enterprise Security: HIPAA-ready, GDPR compliant, and AES-256 encrypted. - Global Support: Available in 20+ languages. IDEAL FOR - Conditions: Mast Cell Activation Syndrome (MCAS), Mastocytosis, Histamine Intolerance (HIT), Dysautonomia, POTS. - Symptoms: Hives, Anaphylaxis, Flushing, Brain Fog, Severe Bloating, Low Blood Pressure, Wheezing. - Specialized: Multi-Condition Tracking, Overlapping Symptoms, Low-Histamine Logging, Flare Prevention. IMPORTANT DISCLAIMER: This app is a personal symptom and data logging tool and is NOT a medical device. It does not diagnose, treat, or cure any condition. Always consult a licensed healthcare professional for medical advice, diagnosis, and treatment. Privacy: https://mcasjourney.flutterflow.app/privacy EULA: https://mcasjourney.flutterflow.app/termsAndConditions -- Health Journey Labs by Onrival LLC Supporting women's health, chronic conditions, autoimmune diseases, and complex health journeys. Learn more at healthjourneylabs.com
Screenshots
Verdict
The clearest difference is device support: MCAS Journey at 3 against GEMAST's 1. MCAS Journey also leads on iOS requirement (14.0.0 vs 17.7). On price, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | GEMAST | MCAS Journey |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.7 | 14.0.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 63 MB |
| Age rating | 17+ | 17+ |
| Developer | Simed Software SL | Onrival LLC |
In-app purchases
GEMAST
No in-app purchases
MCAS Journey
No in-app purchases








