I’m building a Flutter app with monthly/yearly subscriptions. My country isn’t supported for Google Play or Apple merchant payouts, so I’m looking at using a Merchant of Record (like Polar.sh) for checkout instead. The tricky part: I want to avoid violating Play Store/App Store payment policies (no unauthorized external purchase links inside the app, etc.). Has anyone integrated a third-party payment gateway this way and stayed compliant? What approach did you use? submitted by ...