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InfluToDocs

Install the SDK

Choose an SDK

Which InfluTo SDK fits your app — React Native and Expo, native iOS, native Android, Flutter, or web and Capacitor — and what each one needs for RevenueCat or store-direct.

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Install exactly one InfluTo SDK per app: the one for the language your app is written in. All five follow the same wire contract, have the same methods, and support both purchase-validation paths, so everything else in these docs applies whichever you pick.

Pick by stack

Your app is built with Use Guide
React Native, Expo @influto/react-native-sdk React Native & Expo
Swift — SwiftUI or UIKit influto-ios (Swift Package Manager) iOS
Kotlin or Java to.influ:android-sdk Android
Flutter (Dart) influto Flutter
Capacitor, Ionic, Cordova, a PWA or a website wrapped as an app @influto/web Web & Capacitor
Anything else (Unity, Kotlin Multiplatform, a backend) The HTTP API HTTP API

A React Native app with native iOS and Android modules still uses the React Native SDK — one SDK per app, not per platform.

Packages

Your app Package Registry Latest Source
React Native / Expo @influto/react-native-sdk npm 1.6.1 influto/influto-react-native
iOS (Swift) github.com/influto/influto-ios Swift Package Manager 1.1.1 influto/influto-ios
Android (Kotlin) to.influ:android-sdk Maven Central 1.1.1 influto/influto-android
Flutter (Dart) influto pub.dev 1.1.1 influto/influto-flutter
Web / Capacitor / PWA @influto/web npm 1.0.1 npm package

What every SDK does

  • initialize once at startup with the app's API key — throws on failure.
  • checkAttribution at launch to find out whether the install was referred — never throws.
  • identifyUser when you know who the user is, so purchases can be matched to the referral.
  • validateCode / applyCode and a ready-made code field for codes people type in.
  • checkAccess for free-access codes, reportPurchase for store-direct apps, trackEvent for funnel events.

Every method, with signatures for each platform: SDK reference.

Purchases: what each SDK needs

Choose RevenueCat or store-direct per app (how to choose). What you add depends on the SDK:

SDK RevenueCat: tagging the subscriber Store-direct: automatic purchase capture
React Native Automatic when react-native-purchases is installed Needs expo-iap or react-native-iap installed
iOS Pass a revenueCatAttributeSetter in the config Built in (StoreKit 2)
Android Automatic, or pass a revenueCatAttributeSetter Add to.influ:android-sdk-billing
Flutter Pass a revenueCatHook in the config Add influto_iap and enable its observer
Web Pass a revenueCat binding Pass a purchaseSource (Capacitor, Cordova or Play Digital Goods)

Automatic capture only runs on apps set to store-direct, so it can never double-report a RevenueCat app. Each SDK guide shows the exact code.

Requirements

SDK Minimum
React Native React Native 0.60+, @react-native-async-storage/async-storage
iOS iOS 16, Swift 5.9 (also macOS 13, tvOS 16, watchOS 9)
Android minSdk 24, Java 17 toolchain
Flutter Flutter 3.22, Dart 3.4
Web Any ES2019 browser or WebView; Capacitor plugins optional

None of the SDKs use advertising identifiers or ask for App Tracking Transparency. What they send, and what to declare in the stores: Privacy & App Store review.