Spent 4 years building iOS in-app purchases from scratch. Here's the one thing I wish someone tol...Spent 4 years building iOS in-app purchases from scratch. Here's the one thing I wish someone tol...
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Spent 4 years building iOS in-app purchases from scratch. Here's the one thing I wish someone told me earlier:
Test with TestFlight, not just Sandbox.
Sandbox accounts behave differently than real purchases. I had "working" IAP that broke in production because sandbox hid edge cases.
Other quick lessons:
Receipt validation must be server-side (client-side = getting scammed)
Apple rejects vague IAP descriptions — be specific
"Restore Purchases" button isn't optional
These got me a 100% App Store approval rate across multiple submissions. Currently taking on React Native projects if anyone needs IAP help or App Store submissions 🚀
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