Migraine Sentry is free to download and useful from day one. Premium unlocks the intelligence layer once your patterns are ready. Here's where the line sits, and how billing works.
What's free
- Logging: migraines, symptoms, medications, and daily & weekly check-ins.
- Your health metrics: live signals from your Apple Watch and iPhone, with your personal baselines.
- History: your full attack timeline and calendar.
- Your daily forecast level: Low, Moderate or Elevated, every morning.
- Your headline insights: the stats and patterns learned so far.
- Doctor-ready report & export: the clinical core (attack log, MIDAS, HIT-6, symptom and medication summaries), generated on your device.
What Premium unlocks
- The why behind the forecast: which signals are driving today's level, and what to do about them.
- Live signal nudges: in-the-moment alerts when something drifts from your baseline.
- Trigger ranking & correlations: your personal triggers, ranked by the strength of the link in your own data.
- Pattern detection: timing patterns, cycle-phase analysis, and trends.
- Treatment insights & compound triggers: what's working, and which triggers are riskier together.
- Deeper report analysis: the trigger table, compound triggers and pre-attack changes, added to your PDF.
You don't pay to find out whether it works. The moment your forecast comes online (after about a week of data and three logged migraines), Migraine Sentry unlocks everything for 21 days, free, with no card required and nothing to cancel. You're evaluating the real thing, on your own data, not an empty screen.
How billing works
Premium is a subscription ($24.99 per year or $3.99 per month) purchased and managed entirely through the App Store. To change or cancel, open Settings → your name → Subscriptions on your iPhone; Apple handles the billing, so cancellation takes effect at the end of the paid period, exactly as with any App Store subscription. The 21-day preview above is separate: it needs no card and never auto-charges.
If you cancel
Your data stays on your device; nothing is deleted, ever, for billing reasons. Logging, health metrics, history and your existing entries all keep working. Premium features pause until you resubscribe, and everything picks up where it left off, because the analysis runs on data that never stopped being yours.