Privacy Policy
This Privacy Policy explains how Yoshifumi Kanno ("I", "me", or "my") handles information in connection with the SyncFlow mobile application and related pages (the "Service").
SyncFlow is designed to help users synchronize selected data between Fitbit and Apple Health. This Privacy Policy should be read together with the Terms of Use.
1. Information the Service Handles
The Service may handle the following categories of information:
- Fitbit account authorization data and Fitbit data that you choose to sync.
- Apple Health write/read permissions and health-related data needed for sync operations.
- App settings, sync preferences, local history, and local cache stored on your device.
- Diagnostic, crash, analytics, advertising, and purchase-related information processed by third-party providers.
2. How Sync Data Is Processed
SyncFlow is intended to perform routine sync operations primarily on your device and through third-party platform APIs. I do not intentionally operate my own custom backend to centrally store your Fitbit or Apple Health content for normal use of the app.
However, third-party providers used by the Service may process certain technical, diagnostic, analytics, advertising, or purchase-related data as part of operating their services.
3. How Information Is Used
Information may be used to:
- authenticate your Fitbit connection and perform requested sync actions;
- write or manage data in Apple Health based on your permissions and app settings;
- store preferences, local state, and sync-related metadata on your device;
- monitor reliability, debug crashes, improve app performance, and understand app usage;
- show ads, manage consent choices, and support subscription or purchase functionality where available;
- respond to support requests, feedback, or legal obligations.
4. Third-Party Services
The Service may rely on third-party services such as:
- Google AdMob / Google UMP for advertising and consent management;
- Firebase Analytics and Firebase Performance for analytics and performance monitoring;
- Sentry for crash and error reporting;
- RevenueCat for subscription and purchase infrastructure;
- Fitbit and Apple Health / HealthKit as external platform integrations.
These providers operate under their own terms and privacy policies. Their processing may occur in countries other than your own, subject to their own legal and technical controls.
5. Advertising and Consent
The Service may display ads. Ad-related consent, including privacy choices and applicable IDFA / consent flows, may be handled through Google UMP / Privacy & Messaging and related advertising infrastructure.
6. Purchases and Subscriptions
If subscriptions or purchases are offered, related purchase information may be processed through Apple and RevenueCat. I do not directly process your payment card details.
7. Data Storage and Retention
Certain app settings, sync preferences, authorization-related state, and local cache may be stored on your device. Third-party providers may retain technical, analytics, crash, advertising, or purchase-related information according to their own retention practices.
8. Deletion and Device Controls
The app includes controls intended to let you reset local sync state and remove data written by the app from Apple Health. Some data may also remain subject to Fitbit, Apple Health, AdMob, Firebase, Sentry, RevenueCat, or other provider-side retention and policies.
9. Security
I use commercially reasonable efforts appropriate for an independent software service, but no method of electronic transmission, storage, or platform integration is completely secure. I cannot guarantee absolute security.
10. Children
The Service is not intended for children under 13, or under any higher minimum age required by the laws of your jurisdiction. If you believe a child has provided personal information in violation of applicable law, please contact me.
11. Your Rights
Depending on where you live, you may have rights relating to access, correction, deletion, objection, consent withdrawal, or other privacy protections. Some of these rights may depend on the third-party platform or provider involved.
12. Changes to This Privacy Policy
I may update this Privacy Policy from time to time. The updated version will be posted at this page with a new effective date.
13. Contact
If you have questions about this Privacy Policy, please contact: sync.health.app@gmail.com