privacy.

Applies to: AllergyTrace · MediTrace · vitatrace.app

As of: May 2026

Responsible entity

SilvaGIS GmbH
Via Quinclas 9
7130 Ilanz, Switzerland

Commercial register: CHE-490.942.935 (Canton of Graubünden)
Contact: vitatrace@proton.me

What data we collect

None. Neither AllergyTrace nor MediTrace has a server or transmits health data off your device. Symptom entries, medication logs, allergen exposures and analysis results live exclusively in the local SQLite database on your Android device.

App permissions

Biometrics — only if you enable app lock (fingerprint / face). Verified by the Android system; the app never sees the biometric value.
Notifications — only for local tracking reminders, opt-in.
Storage — solely for import/export of JSON backups that you trigger yourself.

Analytics, ads, tracking

None. No analytics SDKs (no Google Analytics, no Firebase, no Plausible), no ads, no social-login integrations, no crash reporter with personal data.

In-app purchases

Standard, Pro and Lifetime purchases are processed via Google Play Billing. Google handles the transaction under their privacy policy. The apps only receive an encrypted entitlement status via RevenueCat — no card details, no real names, no addresses.

RevenueCat processes an anonymous customer ID, used exclusively to link purchases to your Google Play account. RevenueCat privacy: revenuecat.com/privacy.

Website tracking (vitatrace.app)

The website logs anonymous page views (path and referrer) via the self-hosted backend admin.silvagis.ch — no Google Analytics, no Plausible, no third party. No cookies. No IP addresses are stored.

Data export and backup

You can export your data as a JSON backup at any time (Settings → Backup). The backup contains your raw tracking data and lives only where you save it (device storage, cloud drive of your choice, etc.).

Your rights

Since the apps store nothing that isn't on your device, most access, rectification and deletion rights against us don't apply. Uninstalling the app deletes all local data (except for backups you explicitly exported).

For privacy questions: vitatrace@proton.me

Medical disclaimer

AllergyTrace and MediTrace provide statistical hints based on self-tracking data. They do not replace medical diagnosis or advice. For medical decisions — especially changes to medication — always consult a doctor.