Chronic Disease & Symptom Tracking

Chronic conditions (migraine, chronic pain, asthma, autoimmune, GI, cardiac, mental-health) are the strongest use case for tracking apps — patterns emerge over weeks and months, and the data genuinely helps clinicians. The tools split by condition: generic symptom trackers, condition-specific apps, and hardware-paired diagnostic tools.

Sister sections: Diabetes & CGM Tools, Mental Health Journaling, Health Records & FHIR, Apple Watch, HRV & Heart Rate, Quantified Self DIY, Health Data Privacy.

Generic symptom + lifestyle correlation

• ★ ★ Bearable — paid (~$30/yr Premium) + free; mood + symptoms + medication + sleep + factors with correlation analysis; the most-recommended chronic-condition tracker for 2024-26. Apple Health / Health Connect integration. Long-haul COVID + ME/CFS communities adopted it heavily.
  • https://bearable.app/
• ★ Visible — paid (~$15/mo) + free; pacing + symptom tracker for ME/CFS / long COVID; Polar Verity Sense armband integration.
• Daylio — paid + free; mood-first but adaptable; see Mental Health Journaling.
• Symple — free; older symptom-correlation app.
• Guava — paid + free; symptom tracker; lab-result import.

Migraine / headache

• ★ Migraine Buddy — paid + free; widely-used; trigger correlation; report exports for neurologist visits.
• N1-Headache — free + paid; UK-based; rich tracking.
• Migraine Healthline / Headache Diary — free; varies.
• Curelator Headache — paid; trial-based correlation.

Chronic pain

• CatchMyPain — free + paid; pain-map drawing.
• Manage My Pain — paid + free; report-friendly.
• PainTrack — free.
• Bearable — covers pain well as part of generic tracking.

Asthma / respiratory

• Asthma Tracker (NIH-developed) — free.
• AsthmaMD — free; exports doctor reports.
• Propeller Health — paid hardware (~$50 inhaler sensor) + app; clinician-prescribed.
• Sense4Care / FluentAir — peak-flow phone-mic measurement.

Heart / cardiac

• ★ KardiaMobile (AliveCor) — paid hardware (~$80-150) + free app; single-lead or 6-lead ECG, FDA-cleared; instant readings; AFib / bradycardia / tachycardia detection. The cardiac-self-tracking gold standard.
  • https://www.alivecor.com/
• ★ Apple Watch ECG (Series 4+) — single-lead; FDA-cleared; built-in. See Apple Watch.
• Withings ScanWatch / Nova — single-lead ECG; sleep apnea screening.
• Cardiogram — paid + free; long-term HR + AFib screening.
• Qardio Arm — paid; BP cuff; app-paired.
• Omron HEM-7361T / Complete — paid; cellular BP cuffs that include ECG (Complete).

Auto-immune / IBD / Crohn's

• mySymptoms Food Diary — paid; food + symptom correlation; IBD favorite.
• GI Buddy (Crohn's & Colitis Foundation) — free.
• Cara Care — paid + free; gut / GI focused.
• Bearable — strong here too.

Cancer / oncology support

• Belong.Life — free; condition-specific support communities.
• OncoPower — free.
• Outcomes4Me — paid + free; cancer treatment pathway tracker.

Sleep apnea (CPAP) — covered also under Sleep

• ★ OSCAR — FOSS Open Source CPAP Analytics; reads ResMed AirSense / Philips DreamStation SD cards; the homelab CPAP tool. See Sleep Tracking.

Medication adherence

• Medisafe — paid + free; reminders; most-recommended pill reminder; family monitoring.
• MyTherapy — free; minimalist; Android.
• Round Health — paid + free; iOS-clean.
• ★ Apple Health Medications (built-in iOS 16+) — free; pill reminders; check-marking; Apple Watch nudges.

Lab results / records

• ★ Apple Health Records — US + select; pulls FHIR records from participating health systems; free; one of the biggest free-tier wins for chronic patients in 2024-26.
• ★ MyChart — free with most US health systems running Epic; messaging your provider, lab results, prescription requests.
• ★ Health Gorilla / Vault — paid; FHIR aggregation across providers.
• See Health Records & FHIR.

Practical tracking patterns

• ★ Pre-appointment summary: print a 30-day chart from Bearable / Migraine Buddy → bring to appointment → 10x more useful conversation.
• One trigger at a time — testing if dairy makes you migraine? Cut it for 4 weeks; reintroduce; track. Don't change five things at once.
• Apple Watch / wearable correlation: HRV drops 24-48h before migraines / flares for many people; visible only with multi-month data.
• CSV exports save time — most apps export. Set a calendar reminder to export quarterly.

Privacy considerations

• Symptom data is sensitive — lab-result-attached apps are HIPAA-covered (mostly), but generic symptom trackers may not be.
• Bearable / Daylio are private-by-default (data on device + sync to their servers if you opt in).
• See Health Data Privacy.

Cost / license honesty

• Bearable — free + ~$30/yr Premium.
• Visible — ~$15/mo.
• Migraine Buddy — free + paid premium.
• KardiaMobile — ~$80-150 hardware; free app.
• Apple Health / MyChart — free.
• OSCAR — GPL FOSS.
• Medisafe — free + ~$5/mo Premium.

Pick this if…

• Generic chronic-condition tracking: Bearable.
• ME/CFS / long COVID pacing: Visible.
• Migraines specifically: Migraine Buddy.
• Heart concern, want at-home ECG: KardiaMobile (or Apple Watch ECG).
• CPAP user: OSCAR.
• Medication adherence: Apple Health Medications (iOS) or Medisafe (cross-platform).
• Diabetes / CGM: see Diabetes & CGM Tools.
• Lab + provider records: Apple Health Records + MyChart.