
FlareCast
See the pattern in your flares
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Free
In-App Purchases
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About
If your fitness tracker thinks you're broken, you're using the wrong app.
FlareCast was built by someone living with Sjögren's syndrome, for people with chronic illness. Instead of a step goal that shames you on bad days, FlareCast gives you one honest number: your capacity for today. It's calculated from how you slept, your symptoms, fever, stress, hydration, and check-ins. A 30% day is a 30% day — the app tells you that, and tells you why.
Behind that number, FlareCast quietly tracks what your doctor wants to see at your next appointment:
• Symptom load over time
• Fever trends, with a flag at 100.4°F
• Medication adherence
• Sleep, resting heart rate, and HRV from your Apple Watch
• Hydration against your goal
Tap one button and FlareCast generates a clean PDF you can email your specialist before your visit.
Gentle by design. Log from your wrist by answering a reminder, no need to open the app. Soft colors instead of alarm-red. Miss a few days? It welcomes you back instead of guilt-tripping you.
Private by default. Everything stays on your iPhone. No account. No cloud. No tracking. No data sold...ever. FlareCast reads from Apple Health; it never writes to it and never sends your data anywhere.
What you can track:
• Wellbeing, symptoms, stress, body temperature, hydration
• Medications with day-of-week scheduling and reminders
• Blood pressure and glucose
• Free-form notes with photos
• Period start/end with a calendar and predictions
Built for autoimmune conditions like Sjögren's, lupus, and RA, useful for anyone living in a body that needs listening to.
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FlareCast is not a medical device. Any score, prediction, or insight is for personal pattern-tracking only. Don't use it to diagnose, to decide whether to take or skip medication, or in place of your doctor.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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What's New in FlareCast
1.3
August 1, 2026
Log any reading for an earlier time. Every manual entry (blood pressure, glucose, temperature, weight, blood oxygen, heart rate, and sleep) now has a When option, so you can backdate a reading you took earlier or on a past day. FlareCast now follows your phone's rotation, so you can use it in landscape. Your home screen refreshes at midnight, so the day's cards roll over even if you leave the app open. Fixes and polish throughout. Thank you for being here. Your feedback shapes every update.
MoreSubscription plans
Premium Monthly
Deeper trends, pattern insights & doctor PDF.
$4.991 Month


