Tether - MCAS Tracker
Know your triggers
About
Track mast cell activation syndrome (MCAS) flares, identify triggers, and manage medications. This private app offers daily check-ins, historical data, and export options. Premium features include AI-driven insights and detailed reports for better health management.
What's New in Tether
1.0
June 24, 2026
Subscription plans
Tether Premium Monthly
Pattern insights and doctor-ready reports
Developer apps
FAQ
What is Tether - MCAS Tracker?
Tether - MCAS Tracker is a personal health tracking tool designed for individuals managing Mast Cell Activation Syndrome (MCAS) and related chronic conditions. It allows users to log flares, identify triggers, track medications, and generate reports for their healthcare providers.
Is Tether - MCAS Tracker free to use?
The core logging features of Tether - MCAS Tracker are available for free. This includes logging flares, tracking foods, environmental triggers, and medications. A separate in-app subscription is required for premium features.
What are the premium features of Tether - MCAS Tracker?
Premium features include AI trigger correlation to identify likely flare causes, a pattern dashboard with charts, doctor-ready PDF reports, a food label scanner, weather and pollen tracking, a comorbidity panel for related conditions, and Apple Health sync.
How much does Tether Premium cost?
Tether Premium is available as a monthly subscription for $5.99 or an annual subscription for $39.99, offering a 44% saving. New subscribers receive a 7-day free trial on the monthly plan.
Can I cancel my Tether Premium subscription?
Yes, subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime through your App Store account settings.
Does Tether - MCAS Tracker have ads?
No, Tether - MCAS Tracker is ad-free. The app emphasizes a calm, private experience without advertisements, ensuring user data is not shared with third parties.
What devices is Tether - MCAS Tracker available on?
Tether - MCAS Tracker is available on iPhone and iPad devices. It is designed with a calm, low-stimulus interface suitable for users experiencing low energy or pain.
How often is Tether - MCAS Tracker updated?
The latest version of Tether - MCAS Tracker is 1.0, and it was last updated on June 24, 2026. Specific update frequency is not detailed, but it is actively maintained.