# PHENOMS Study App vs Chronic Symptom Tracker Curava

The clearest difference is rating: PHENOMS Study App at 4.8 against Chronic Symptom Tracker Curava's 4.0. PHENOMS Study App also leads on in-app purchases (none vs 2) and ratings volume (6 vs 1). Chronic Symptom Tracker Curava's advantage is review sentiment (100% vs 80%) and update cadence (weekly vs every 4 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Chronic Symptom Tracker Curava sells 2 in-app purchases, starting at $3.99 per month. PHENOMS Study App asks for nothing beyond the download.

PHENOMS Study App holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: PHENOMS Study App has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 80% of PHENOMS Study App's written reviews are positive against 100% of Chronic Symptom Tracker Curava's, so the app with the better star average is not the one people write more warmly about.

PHENOMS Study App ships an update every 4 weeks, Chronic Symptom Tracker Curava weekly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PHENOMS Study App | Chronic Symptom Tracker Curava |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/phenoms-study-app/id6443982346/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/chronic-symptom-tracker-curava/id6772877735/reviews) |
| Number of ratings | **6** | 1 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 41 MB | 101 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Stanford University](https://appshunter.io/developer/292922032) | [Deep Saha](https://appshunter.io/developer/1880794882) |

## What reviewers say

### PHENOMS Study App

[App page](https://appshunter.io/ios/app/phenoms-study-app/id6443982346)

This medical application is exclusively for participants of the PHENOMS Study at Stanford University. It facilitates digital phenotyping for Multiple Sclerosis research.

**Highlights:** Digital phenotyping for MS, Exclusive to PHENOMS Study participants, Stanford University research tool, Multiple Sclerosis data collection

**Features:** Vision Pro support

**In-app purchases:** none


### Chronic Symptom Tracker Curava

[App page](https://appshunter.io/ios/app/chronic-symptom-tracker-curava/id6772877735)

This app helps you track chronic symptoms, identify patterns, and generate reports for your doctor. It supports various conditions like Migraine and IBS, and integrates with Apple Health for automatic data logging. A Pro version offers advanced features like flare prediction.

**Highlights:** Symptom logging, Pattern analysis, Doctor-ready PDF reports, Apple Health sync, Medication journal, Condition-specific logging, Flare prediction (Pro)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Curava Premium Monthly | $3.99 | per month |
| Curava Premium Yearly | $34.99 | per year |


## Frequently asked questions

### Is PHENOMS Study App free?

PHENOMS Study App is free to download, with no in-app purchases.

### Is Chronic Symptom Tracker Curava free?

Chronic Symptom Tracker Curava is free to download, with in-app purchases available.

### Which has better reviews, PHENOMS Study App or Chronic Symptom Tracker Curava?

PHENOMS Study App is rated higher. PHENOMS Study App averages 4.8 out of 5 from 6 ratings, while Chronic Symptom Tracker Curava averages 4.0 from 1 ratings.

### Do PHENOMS Study App or Chronic Symptom Tracker Curava have ads?

Neither PHENOMS Study App nor Chronic Symptom Tracker Curava shows ads.

### Which is updated more often, PHENOMS Study App or Chronic Symptom Tracker Curava?

PHENOMS Study App ships an update every 4 weeks, and Chronic Symptom Tracker Curava weekly. Most recently, PHENOMS Study App was updated on October 21, 2026 and Chronic Symptom Tracker Curava on October 24, 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.*