Comparison

Symptom Tracker | OpenCare vs Thesos

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Symptom Tracker | OpenCare

Easily track chronic illnesses, daily health, and medications. Document symptoms with photos, set reminders, and generate reports for doctor visits. Integrates with Apple Health for comprehensive health monitoring.

Highlights
  • Symptom logging with severity scales
  • Photo-based symptom documentation
  • Medication and treatment tracking
  • Customizable reminders
  • Doctor-ready reports and trend analysis
  • Apple Health sync
Features
Read full description

The easiest way to track the hard things. OpenCare is your personalized symptom tracker, designed for chronic illness management and daily health tracking. Whether you’re logging pain levels, monitoring conditions, or keeping track of medications, OpenCare helps you stay in control. Why OpenCare? • Struggling to track symptoms over time? • Need a simple daily pain tracker? • Want to manage your symptoms and medications effectively? OpenCare is the only simple & personalized care tracking app built for self-care and caregiving. Who is OpenCare for? People with chronic conditions (migraines, arthritis, autoimmune disorders, etc.) Anyone needing a daily pain tracker Caregivers monitoring a loved one’s health Patients preparing for doctor visits with accurate symptom logs Key Features: Symptom Logging with Severity Scales – Track how your symptoms change over time. Photo-Based Symptom Tracking – Document physical symptoms for better insights. Medication & Treatment Tracking – Log dosages, schedules, and responses. Customizable Reminders – Never forget to log symptoms or take medications. Doctor-Ready Reports & Trend Analysis – See your health patterns in clear charts. Apple Health Sync – Integrate blood pressure, glucose, and body temperature data. Track What Matters Use OpenCare as a chronic pain tracker, migraine tracker, medical log, headache diary, or health tracker for any symptoms you want to monitor. Understand key trends over time with symptom graphs Stay in control of symptoms and medications Prepare for doctor visits with detailed logs and notes Examples of Symptoms You Can Track: • Headaches & Migraines • Psoriasis & Skin Conditions • Arthritis & Rheumatoid Arthritis • Dementia & Alzheimer’s • Chronic Fatigue & Autoimmune Symptoms Take Control of Your Health Today Download OpenCare and start tracking your symptoms in an easy, structured way. Stay informed, stay prepared, and stay in control of your health journey. Terms: https://deskofkyle.com/opencare/terms/ Privacy Policy: http://deskofkyle.com/opencare/privacy DISCLAIMER: This app is not a substitute for a primary care physician. It does not provide similar services to a primary care provider. It does not offer health advice or solutions. This app should not be used alone but in combination with other patient-assistance and caregiver-assistance resources. Seek a doctor’s advice in addition to using this app and before making any medical decisions. Consult with your primary care provider or the primary care provider for your patient before beginning any regimented health tracking solution. Terms: http://opencareapp.com/terms Privacy Policy: http://opencareapp.com/privacy DISCLAIMER: This app is not a substitute for a primary care physician. It does not provide similar services to a primary care provider. It does not offer health advice or solutions. This app should not be used alone but in combination with other patient-assistance and caregiver-assistance resources. Seek a doctor’s advice in addition to using this app and before making any medical decisions. Consult with your primary care provider or the primary care provider for your patient before beginning any regimented health tracking solution.

About

Thesos

This app helps individuals with Irritable Bowel Syndrome identify triggers for their digestive issues. It allows for quick daily logging of meals, symptoms, and lifestyle factors to reveal patterns and improve gut health.

Highlights
  • Smart trigger identification
  • Rapid daily logging
  • Gut score and trends
  • Evidence-based quizzes and guides
  • Private and secure data
Read full description

Struggling with IBS, painful bloating, or unpredictable digestion? Thesos helps you uncover what’s triggering your symptoms so you can take control of your gut health. Built specifically for people living with Irritable Bowel Syndrome, Thesos turns your daily habits and symptoms into clear, actionable patterns. Logging shouldn't feel like a chore. That’s why Thesos is designed to be calm, minimal, and fast—taking less than 60 seconds a day. KEY FEATURES: • SMART TRIGGER IDENTIFICATION Log your meals, stress, sleep, and symptoms. Over time, discover hidden food sensitivities and lifestyle patterns behind your flare-ups. • RAPID DAILY LOGGING Effortlessly capture breakfast, lunch, dinner, snacks, bowel movements (Bristol Stool Scale), symptoms, supplements, exercise, and sleep in one intuitive stream. • GUT SCORE & TRENDS Visualize your gut health over 7, 30, and 90-day trends. Watch how dietary adjustments and lifestyle changes directly impact your digestion. • EVIDENCE-BASED IBS QUIZZES & GUIDES Explore scientifically backed educational modules and validated symptom assessments to better understand your gut and the brain-gut axis. • PRIVATE & SECURE Your health data belongs to you. We follow strict privacy standards and give you complete control—export or permanently delete your data anytime with one tap. Start your journey to calmer digestion today with Thesos. --- IMPORTANT MEDICAL DISCLAIMER: Thesos is designed solely for educational, informational, and self-monitoring purposes. It does not provide medical advice, diagnosis, or treatment, and is not a substitute for professional clinical judgment. Always consult with a qualified healthcare provider regarding any medical condition or before making changes to your diet or treatment plan. If you experience severe symptoms, seek immediate medical attention.

Screenshots

Symptom Tracker | OpenCare4 screens
Thesos4 screens

Verdict

The call

The clearest difference is rating: Symptom Tracker | OpenCare at 4.3 against Thesos's 1.0. Symptom Tracker | OpenCare also leads on update cadence (every 2 weeks vs every 3 months) and ratings volume (210 vs 1). Thesos's advantage is in-app purchases (none vs 3) and iOS requirement (15.0 vs 17.0). On price, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Symptom Tracker | OpenCare sells 3 in-app purchases, starting at $4.99 per month. Thesos asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Symptom Tracker | OpenCare holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Symptom Tracker | OpenCare has 210 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Symptom Tracker | OpenCare ships an update every 2 weeks, Thesos every 3 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Symptom Tracker | OpenCare versus Thesos: the parameters behind the verdict, then further details
ParameterSymptom Tracker | OpenCareThesos
PriceFreeFree
Rating4.3 (210 ratings) — better1.0 (1 ratings)
Positive reviews71.1% of reviews—
Number of ratings210 — better1
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size63 MB2 MB
Age rating4+17+
DeveloperKyle RyanTea Tepavcevic

Bugs and requests

Symptom Tracker | OpenCare

Reported bugs

17 issues
  • App crashes on startup or during use
  • App won't reopen after closing
  • Data disappears or resets unexpectedly
  • Cannot change timestamp on logged entries
  • Text disappears when typing detailed notes
Show 12 more
  • Photo upload fails intermittently
  • Photo loading displays error message
  • Calendar date selection resets to wrong date
  • Cannot select multiple options despite prompt saying 'pick all that apply'
  • Delayed response when tapping options
  • Apple Watch app doesn't sync symptoms properly
  • Timeline doesn't update to correct day
  • Broken app support link (404 error)
  • Symptoms recorded incorrectly (e.g., 'mild' stored as 'not felt')
  • Cannot navigate between form fields without submitting
  • Scroll options disappear in medication frequency selection
  • Dialog box doesn't close after submit

Requested features

18 requests
  • Ability to flip body diagram to show front and back views
  • End time tracking for symptoms (not just start time)
  • Editable and deletable timeline entries
  • 1-10 pain scale instead of 1-5
  • Multiple loved ones/profiles support
Show 13 more
  • Calendar integration (Google Calendar, iCal, Apple Calendar)
  • Recurring appointment option
  • Ability to specify symptom end times with notes
  • Horizontal timeline scrolling for easier month navigation
  • Onboarding tutorial for new users
  • Customizable caregiver/loved one names instead of generic labels
  • Collapsible symptom entries in timeline to reduce scrolling
  • Symptom filtering by type (physical, mental, emotional)
  • Graphs and charts included in exported PDF reports
  • Medication dosage and time-of-day tracking
  • Dark mode text color adjustment
  • Visual confirmation when logging entries
  • Ability to record future appointments

Thesos

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Symptom Tracker | OpenCare

Subscriptions3
  • OpenCare Plus7 Days trial$4.991 Month
  • OpenCare+ Monthly3 Days trial$4.991 Month
  • OpenCare Plus7 Days trial$5.991 Month
None

Thesos

No in-app purchases

Questions

Is Symptom Tracker | OpenCare free?
Symptom Tracker | OpenCare is free to download, with in-app purchases available.
Is Thesos free?
Thesos is free to download, with no in-app purchases.
Which has better reviews, Symptom Tracker | OpenCare or Thesos?
Symptom Tracker | OpenCare is rated higher. Symptom Tracker | OpenCare averages 4.3 out of 5 from 210 ratings, while Thesos averages 1.0 from 1 ratings.
Do Symptom Tracker | OpenCare or Thesos have ads?
Neither Symptom Tracker | OpenCare nor Thesos shows ads.
Which is updated more often, Symptom Tracker | OpenCare or Thesos?
Symptom Tracker | OpenCare ships an update every 2 weeks, and Thesos every 3 months. Most recently, Symptom Tracker | OpenCare was updated on November 2, 2026 and Thesos on October 31, 2026.

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