With the Maps SDKs, maps based on Google maps data can be added to an application. The SDK automatically handles access to the Google Maps servers, map display, and response to user gestures such as clicks and drags. Markers, polylines, ground overlays and info windows to the map can also be added. (source: Google Maps Platform documentation)
Maps Mobile SDKs

Maps Mobile SDKs
Last checked for availability: Friday, November 15, 2019
Specifications
Description Webpage: https://developers.google.com/maps/documentation/android-sdk/intro
Source code (download): N/A
License type: Free to use
Price scheme: N/A
Usage restrictions: Android, iOS
Software platform: N/A
Code language: N/A
API type: N/A
API response type: N/A
SDK: iOS, Android