Privacy Policy

Last updated: March 26, 2026

Overview

FlatPrice ("we", "our", "the app") is a physical cargo calculator for oil and petroleum products. We are committed to protecting your privacy. This policy explains what data we collect and how we use it.

Data Stored on Your Device

The following data is stored exclusively on your device and is never transmitted to our servers:

• Product selections, density values, and price inputs
• Market comparison entries (ports, prices, costs)
• Daily price history snapshots
• Voyage estimate settings (ports, speed)
• App preferences (theme, default product, display units)

Third-Party Services

FlatPrice uses the following third-party services:

• RevenueCat — Manages subscriptions and in-app purchases. RevenueCat may collect anonymous purchase data and device identifiers. See RevenueCat's Privacy Policy.
• Exchange Rate API (open.er-api.com) — We fetch live FX rates from this free API. No personal data is sent; only a currency code request is made.
• Apple App Store / Google Play — Handle payment processing for subscriptions. Subject to their respective privacy policies.

Data We Do NOT Collect

• We do not collect personal information (name, email, phone number)
• We do not use analytics or tracking SDKs
• We do not collect location data
• We do not serve advertisements
• We do not share or sell any user data

Subscriptions

FlatPrice offers a monthly subscription managed through Apple App Store or Google Play. Payment is processed entirely by Apple/Google. We do not have access to your payment details.

Data Retention

All calculation data and price history is stored locally on your device. You can clear your history at any time from within the app. Uninstalling the app removes all locally stored data.

Children's Privacy

FlatPrice is not directed at children under 13. We do not knowingly collect data from children.

Changes to This Policy

We may update this privacy policy from time to time. Changes will be posted on this page with an updated date.

Contact

If you have questions about this privacy policy, contact us at support@flatprice.app.