Start with the data boundary
The first question is not which privacy label sounds best. It is where personal data is stored, processed, synced, and deleted. A serious privacy-first app can explain those boundaries in ordinary language.
Use Apple-native privacy primitives
SwiftData, CloudKit, HealthKit, Secure Enclave, App Attest, and local model execution can reduce the need for custom servers that become attractive breach targets.
Make tradeoffs visible
Some features still need weather data, public APIs, account sync, or payment systems. The privacy-first move is to keep those integrations purposeful and visible instead of pretending the network does not exist.