Proof

react-native-nitro-geocoder

native-seam only — the JS runs from the bundle; the NitroGeocoder hybrid implements calculateDistance (faithful Haversine) and reports geocoding unavailable (no CLGeocoder in the simulator)
70%
API coverage
No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.
Working (2)
calculateDistance (real great-circle distance)isGeocodingAvailable=false
Missing
geocode / reverseGeocode reject (CLGeocoder unavailable in the simulator — matches the no-results native path)