Privacy Policy — Flight Metrics

Last updated: 1 June 2026

This Privacy Policy explains how Flight Metrics (the “App”) handles your data, what limited technical information our third-party service providers process on our behalf, and your rights under the EU GDPR, the Swiss revised Federal Act on Data Protection (revFADP/nFADP), and other applicable laws.

Data controller: Joanna Bednarczyk (independent developer based in Switzerland), operating under the trade name “Studio Volt”. Contact: privacy@studiovolt.dev.

The Short Version

Your flight recordings (GPS routes, speed, altitude, G-force, barometric pressure) stay on your device only. We do not operate any servers that store flight data.
The App uses three third-party providers for crash reporting, subscription management, and map display. They process limited technical data (such as your IP address, device model, crash diagnostics, and anonymous purchase identifiers) — described in detail below.
No user accounts, no logins, no advertising, no behavioural tracking, no sale of data.
You can delete all locally stored data at any time by removing flights in the App or uninstalling the App.

1. Data That Stays on Your Device

Flight Metrics records flight data (GPS location, speed, heading, altitude, barometric pressure, G-force) using your device's built-in sensors. All recorded data is stored locally in an on-device SQLite database. We do not operate any servers that receive your flight data. There are no user accounts, no logins, and no cloud sync.

2. Data Processed by Third-Party Service Providers

The App relies on three third-party processors to function. Each receives only the minimum technical data described below, under a Data Processing Agreement (DPA) compliant with GDPR Art. 28. None of these providers receives your GPS coordinates, flight routes, name, or email address.

2.1 Crash & Error Reports — Sentry

When the App crashes or encounters an error, the following is sent to Sentry's EU-hosted infrastructure:

Stack trace and error message
Device model, iOS/Android version, App version
Anonymous Sentry install identifier (UUID per install)
Your IP address (logged by Sentry's servers — retained up to 30 days)
Anonymous diagnostic breadcrumbs (e.g. which screen was open)

Purpose: detect and fix bugs.
Legal basis: our legitimate interest in app stability. You may object — see “Your Rights” below.
Provider: see Sentry’s Privacy Policy for their DPA and transfer mechanisms.

2.2 Subscription Management — RevenueCat, Inc. (USA)

When you purchase, restore, or query a subscription, the following is sent to RevenueCat:

Anonymous App User ID (UUID per install — we never link it to your real identity)
Apple App Store receipt for the purchase
Device model, iOS/Android version, App version
Your IP address
Subscription/entitlement state, purchase and restore events

Purpose: validate subscriptions, prevent fraud, enable “Restore Purchases” across reinstalls.
Legal basis: performance of a contract.
Provider: RevenueCat is a US-based processor; transfers are protected by standard contractual clauses under RevenueCat’s DPA. See RevenueCat’s Privacy Policy for details.

2.3 Map Tiles — Mapbox, Inc. (USA)

When you view the map screen, your device requests map tiles from Mapbox. Each request transmits:

Your IP address (used by Mapbox to deliver tiles and prevent abuse)
Device model, OS version, App version
Anonymous Mapbox SDK telemetry (e.g. tile load performance) — you can disable this in Settings → About → Mapbox Telemetry

Purpose: display maps for visualising flight routes.
Legal basis: our legitimate interest in providing map functionality.
Provider: Mapbox’s USA processing relies on standard contractual clauses. See Mapbox’s Privacy Policy and Telemetry settings.

2.4 Payment Processing — Apple Inc.

All subscription purchases are processed by Apple via the App Store. We never receive your credit card number, billing address, or full Apple ID. Apple's handling of payment data is governed by Apple's privacy policy.

3. What We Do Not Do

We do not use advertising SDKs.
We do not use behavioural analytics or marketing trackers (no Google Analytics, no Facebook Pixel, no AppsFlyer, no Adjust, no Amplitude, no Mixpanel).
We do not sell, rent, or share your data with data brokers.
We do not track you across other apps or websites (no IDFA/ATT tracking).
We do not link the anonymous identifiers used by Sentry, RevenueCat, or Mapbox to your real-world identity.

4. Data Retention

Flight recordings & App settings: stored on your device until you delete them in the App or uninstall it.
Sentry crash data: up to 30 days (Sentry Developer plan retention).
RevenueCat subscription data: for the lifetime of the subscription plus the period required by tax and accounting law.
Mapbox tile request logs: controlled by Mapbox under their privacy policy.

5. Your Rights (GDPR / revFADP)

You have the right to:

Access the personal data we (or our processors) hold about you
Rectification of inaccurate data
Erasure (“right to be forgotten”)
Restriction of processing
Object to processing based on legitimate interest
Data portability
Withdraw consent at any time (where based on consent)
Lodge a complaint with the Swiss FDPIC (edoeb.admin.ch) or your local Data Protection Authority.

To exercise any right, email privacy@studiovolt.dev. We will respond within 30 days. Because flight recordings live only on your device, the most effective way to delete them is to remove them in the App or uninstall the App.

6. International Data Transfers

Some processors (RevenueCat, Mapbox) are based in the USA. Transfers to them rely on standard contractual clauses. See each processor’s Privacy Policy linked above for details.

7. Children

Flight Metrics is not directed at children under 16. We do not knowingly collect data from children. If you believe a child has used the App, contact privacy@studiovolt.dev.

8. Security

Flight data is stored locally on your device under your operating system’s built-in protections. Network communications with our service providers are encrypted in transit. No method of storage or transmission is completely secure, and security cannot be guaranteed.

9. Sub-processors

Our processors engage their own sub-processors. Current lists: Sentry · RevenueCat · Mapbox.

10. Changes

We may update this Privacy Policy to reflect changes in our processors, applicable law, or App functionality. The “Last updated” date at the top will reflect the most recent revision. Material changes will be announced in the App's release notes.

11. Contact

Email: privacy@studiovolt.dev · contact@studiovolt.dev
Website: studiovolt.dev

These terms may be assigned to Studio Volt GmbH or Studio Volt SA once incorporated. Your rights under applicable data protection law are unaffected.