in_app_purchase1

Process payments

PassKit

pay2

Send push notifications

UserNotifications

firebase_messaging3

Access GPS coordinates

CoreLocation

geolocator

Access sensor data4

CoreMotion

sensors_plus

Embed maps

MapKit

google_maps_flutter

Make network requests

URLSession

http

Store key-values

@AppStorage property wrapper
        NSUserDefaults

shared_preferences

Persist to a database

CoreData or SQLite

sqflite

Access health data

HealthKit

health

Use machine learning

CoreML