Last Updated: December 14, 2025
FastPhase ("we," "us," or "our") respects your privacy. Our philosophy is "Offline-First." This means that your personal health data stays private and local. We do not transmit your personal health logs to our servers.
This Privacy Policy explains how we collect, use, and protect the limited technical data necessary to process payments (subscriptions) and understand how the app is performing (analytics).
We collect information in two categories: Local Data (stored only on your device) and Transmitted Data (processed by necessary third-party services).
The following data is stored exclusively on your device via local storage technologies. We do not have access to this data unless you explicitly export and share it with us for support purposes.
We use secure, third-party service providers to ensure the app functions correctly and to improve stability. This data is encrypted in transit (using HTTPS/TLS).
We never use this collected data for advertising or marketing purposes.
| Data Type | Purpose | Provider | Details |
|---|---|---|---|
| 1. Financial Info & Purchase History | App Functionality, Analytics | RevenueCat | Data includes purchase history, subscription status, and anonymous App User IDs. This is used to validate your purchase (e.g., FastPhase Lifetime or Pro) and unlock premium features. We do not process or store your credit card numbers; transactions are handled directly by the Google Play Store. |
| 2. App Info and Performance | Analytics | Google Firebase (Crashlytics & Analytics) | Data includes crash logs, diagnostics, stack traces, and app launch times. We collect this to identify and fix bugs (crashes) and ensure the app runs smoothly and reliably on your specific device. |
| 3. Device IDs & Technical Specs | App Functionality, Analytics | Google Firebase | Data includes App interactions (e.g., screens visited, buttons tapped), anonymous Device IDs (Instance IDs), and technical device specifications required for service compatibility (e.g., operating system version, Google Play Services version, device type). We use the anonymous ID to track aggregate usage trends. |
We do not sell your personal data.
We only transfer data to the following specific third-party service providers who act as our data processors to facilitate essential app functionality:
All transmitted data (purchase history, diagnostics) between the app and our third-party providers (RevenueCat and Firebase) is encrypted in transit using HTTPS/TLS protocols. Your local health data stays on your device and is secured by your device's native sandboxing and encryption features.
We do not have a user account system (no email/password login). This means we cannot link an email request to your anonymous data records alone.
If you wish to have your anonymous purchase and analytics data deleted:
Our Service does not address anyone under the age of 13. We do not knowingly collect personally identifiable information from anyone under the age of 13.
We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page.
If you have any questions about this Privacy Policy or need to request data deletion, please contact us:
By email: support@fastphase.app
(For data deletion requests, please include your RevenueCat App User ID.)