# Symptom Tracker | OpenCare vs Thesos

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.

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.

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.

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.

## The numbers

| Metric | Symptom Tracker | OpenCare | Thesos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (210 ratings)](https://appshunter.io/ios/app/symptom-tracker-opencare/id1344067100/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/thesos-ibs-trigger-finder/id6761536629/reviews) |
| Number of ratings | **210** | 1 |
| Positive reviews | 71.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 63 MB | 2 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kyle Ryan](https://appshunter.io/developer/862631068) | [Tea Tepavcevic](https://appshunter.io/developer/1890180880) |

## What reviewers say

### Symptom Tracker | OpenCare

[App page](https://appshunter.io/ios/app/symptom-tracker-opencare/id1344067100)

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:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenCare Plus | $4.99 | per month |
| OpenCare+ Monthly | $4.99 | per month |
| OpenCare Plus | $5.99 | per month |

**What reviewers like**

- 👍 Clean, intuitive, and uncluttered interface
- 💡 Body location mapping feature for precise symptom tracking
- 📊 Timeline and calendar views for symptom progression visualization
- 📄 Export to PDF functionality for doctor appointments
- 🎯 Customizable symptom and medication tracking

**What reviewers complain about**

- 💰 Requires paid subscription after 7-day trial
- 🐛 Frequent app crashes and stability issues
- ⚠️ Data loss and disappearing entries
- 🔄 Delayed and sluggish app performance
- 📝 Text visibility issues in dark mode/dark backgrounds

**Reported bugs**

- 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

**Requested features**

- 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


### Thesos

[App page](https://appshunter.io/ios/app/thesos-ibs-trigger-finder/id6761536629)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*