PHENOMS Study App vs Chronic Symptom Tracker Curava
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PHENOMS Study App
This medical application is exclusively for participants of the PHENOMS Study at Stanford University. It facilitates digital phenotyping for Multiple Sclerosis research.
- Digital phenotyping for MS
- Exclusive to PHENOMS Study participants
- Stanford University research tool
- Multiple Sclerosis data collection
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This application is limited to those enrolled in the PHENOMS Study at Stanford University.
Chronic Symptom Tracker Curava
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.
- Symptom logging
- Pattern analysis
- Doctor-ready PDF reports
- Apple Health sync
- Medication journal
- Condition-specific logging
- Flare prediction (Pro)
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Stop going to appointments empty-handed. Curava logs your symptoms, finds your patterns, and helps you walk in with evidence your doctor has to take seriously. Built for Migraine, IBS, Fibromyalgia, Lupus, POTS, Crohn's, and every chronic condition that's hard to explain. ——— YOUR DATA. YOUR DEVICE. NOBODY ELSE'S. No account. No servers. Everything stays on your phone — encrypted, private, and always yours. ——— WATCH PATTERNS EMERGE. Log your symptoms and daily factors for a few weeks — then watch your health start making sense. Curava analyzes your symptoms, sleep, steps, heart rate, and HRV to show exactly what correlates with your worst days. No spreadsheets. No guessing. • Medication journal — Track every dose and see whether your medications are actually helping. • Condition-specific logging — Select Migraine, IBS, Fibromyalgia, POTS, Lupus, Crohn's, or 10+ other conditions and the right symptoms appear automatically. • Doctor-ready PDF reports — A timestamped health timeline your doctor can read in 60 seconds. Show up with evidence, not apologies. • Apple Health sync — Steps, HRV, sleep, and heart rate pulled in automatically. No manual entry for what your phone already knows. • Flare prediction (Pro) — Learn to see a bad day coming before it arrives. ——— HOW IT WORKS: 1. Select your conditions → symptoms pre-loaded in 30 seconds 2. Log daily → 2 minutes; Apple Health fills the rest automatically 3. Watch patterns emerge → Curava shows what correlates with your worst days 4. Walk in with evidence → generate a PDF before every appointment ——— FREE FOREVER. PRO FOR MORE. Logging, Apple Health sync, and basic pattern detection — free, no expiry. Upgrade to Pro for unlimited patterns, flare predictions, CSV export, iCloud backup, and shareable reports. Download free. Your next appointment just got a lot more productive.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | PHENOMS Study App | Chronic Symptom Tracker Curava |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (6 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 4 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 41 MB | 101 MB |
| Age rating | 17+ | 12+ |
| Developer | Stanford University | Deep Saha |
Customer experience
PHENOMS Study App
Chronic Symptom Tracker Curava
In-app purchases
PHENOMS Study App
No in-app purchases
Chronic Symptom Tracker Curava
- Curava Premium Monthly$3.991 Month
- Curava Premium Yearly7 Days trial$34.991 Year






