# Mobile-only sources ## Overview The primary use of the mobile SDKs is to allow you to access data from providers **that do not have a Web API.** {% hint style="warning" %} ## Data Sources requiring the Terra **Mobile-SDK** The **Mobile SDK** is **ONLY** used to connect to the following integrations: 1.

**Apple Health -** iOS 2.

**Samsung Health -** Android 3.

**Google Fit & Health Connect**- Android. Note: the [Health & Fitness API](https://docs.tryterra.co/health-and-fitness-api) is the preferred way to connect to Google Fit due to better reliability. For **ALL** other integrations, please refer to Integration Setup the [Health & Fitness API](https://docs.tryterra.co/health-and-fitness-api). {% endhint %}

Data flow diagram for data from Apple Health/Samsung Health/Google Fit.

Implementation details will vary based on your development framework/platform. Please refer to your framework's respective guide below:


iOS (Swift)	apple_logo.png	ios-swift
Android (Kotlin)	android_kotlin.svg	android-kotlin
React Native	react_native_logo.svg	react-native
Flutter	flutter_logo.svg	flutter

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