# Privacy Policy — MS Symptom Log
**Last updated:** 2026-07-20
**Developer:** Mobilia Apps
**Contact:** muhammadilyas15@gmail.com
**App:** MS Symptom Log (`com.ilyas.ilyasapps.mssymptomlog`)
MS Symptom Log ("the app") is a personal Multiple Sclerosis symptom-tracking tool. This policy explains what data the app handles and how.
## Summary
- **Your health data stays on your device.** There is no account, no sign-in, and no cloud copy of the symptoms, fatigue ratings, EDSS scores, relapses, medications, or MRI dates you record. They are stored only in a local database on your phone.
- Data leaves your device only when **you** choose to share a report (PDF/CSV), and through the limited third-party services listed below (ads, crash reporting, and an anonymous weather lookup).
## Health data you enter
Fatigue, mood, cognition, pain, sleep, symptoms, EDSS self-scores, walking distance, relapses, medications/DMTs, and MRI/infusion dates are stored **locally on your device only**. We do not transmit, sell, or have access to this information. Uninstalling the app deletes this data. You can also delete individual entries at any time within the app.
## Location (approximate)
If you use the weather / heat features, the app requests approximate (coarse) location to look up local weather conditions from a third-party weather service (Open-Meteo). This is used to help you see whether heat correlates with your symptoms (Uhthoff's phenomenon). Location is used only for that lookup and is not stored on our servers (we have none) or linked to your identity. You can decline the location permission; the rest of the app continues to work.
## Third-party services
- **Google AdMob** (advertising): shows ads to users who have not purchased Premium. AdMob may collect an advertising identifier and device information to serve and measure ads. See Google's policies: https://policies.google.com/privacy
- **Google Play Billing**: processes Premium purchases and subscriptions. We do not receive or store your payment details.
- **Firebase Crashlytics & Google Analytics for Firebase**: collect anonymous crash reports and aggregate usage/diagnostic data to help us fix bugs and improve the app. These do not include the health entries you record.
## Permissions
- **Internet / Network state** — ads, weather lookup, purchase validation, crash/analytics reporting.
- **Approximate & precise location** — optional weather/heat lookup only (approximate is sufficient).
- **Notifications** — optional daily reminders to log your symptoms.
- **Vibrate / Run at startup** — reminder delivery and rescheduling reminders after a device restart.
- **Billing** — Premium purchases.
The app does **not** request camera, contacts, or microphone permissions.
## Data retention & deletion
Your health entries live only on your device and are removed when you delete them or uninstall the app. We hold no server-side copy to delete. Advertising and analytics data are retained by Google per their policies.
## Children
The app is not directed at children under 13 (or the applicable age in your region) and we do not knowingly collect data from them.
## Your rights (GDPR / CCPA)
Because your health data is stored only on your device, you remain in control of it at all times. For advertising/analytics data handled by Google, you may exercise applicable rights through Google's controls and your device's ad-settings. Contact us at muhammadilyas15@gmail.com with any privacy question.
## Not a medical service
MS Symptom Log is a personal tracking tool, not a medical device, and does not provide medical advice or diagnosis.
## Changes
We may update this policy; material changes will be reflected here with a new "Last updated" date.