Flutter product analytics installation

Install the package

Required

Add the PostHog Flutter SDK to your pubspec.yaml:

pubspec.yaml
posthog_flutter: ^5.0.0

Platform setup

Required

Add these values to your AndroidManifest.xml:

android/app/src/main/AndroidManifest.xml
<application>
  <activity>
    [...]
  </activity>
  <meta-data android:name="com.posthog.posthog.API_KEY" android:value="<ph_project_api_key>" />
  <meta-data android:name="com.posthog.posthog.POSTHOG_HOST" android:value="https://us.i.posthog.com" />
  <meta-data android:name="com.posthog.posthog.TRACK_APPLICATION_LIFECYCLE_EVENTS" android:value="true" />
  <meta-data android:name="com.posthog.posthog.DEBUG" android:value="true" />
</application>

Update the minimum Android SDK version to 21 in android/app/build.gradle:

android/app/build.gradle
defaultConfig {
  minSdkVersion 21
  // rest of your config
}

Add these values to your Info.plist:

ios/Runner/Info.plist
<dict>
  [...]
  <key>com.posthog.posthog.API_KEY</key>
  <string><ph_project_api_key></string>
  <key>com.posthog.posthog.POSTHOG_HOST</key>
  <string>https://us.i.posthog.com</string>
  <key>com.posthog.posthog.CAPTURE_APPLICATION_LIFECYCLE_EVENTS</key>
  <true/>
  <key>com.posthog.posthog.DEBUG</key>
  <true/>
</dict>

Update the minimum platform version to iOS 13.0 in your Podfile:

Podfile
platform :ios, '13.0'
# rest of your config

Add these values in index.html:

web/index.html
<!DOCTYPE html>
<html>
  <head>
    ...
    <script>
      !function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.async=!0,p.src=s.api_host.replace(".i.posthog.com","-assets.i.posthog.com")+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="init capture register register_once register_for_session unregister opt_out_capturing has_opted_out_capturing opt_in_capturing reset isFeatureEnabled getFeatureFlag getFeatureFlagPayload reloadFeatureFlags group identify setPersonProperties setPersonPropertiesForFlags resetPersonPropertiesForFlags setGroupPropertiesForFlags resetGroupPropertiesForFlags resetGroups onFeatureFlags addFeatureFlagsHandler onSessionId getSurveys getActiveMatchingSurveys renderSurvey canRenderSurvey getNextSurveyStep".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
      posthog.init('<ph_project_api_key>', {
          api_host: 'https://us.i.posthog.com',
          defaults: '2026-01-30',
      })
    </script>
  </head>
  <body>
    ...
  </body>
</html>

Send events

Recommended

Once installed, PostHog will automatically start capturing events. You can also manually send events to test your integration:

Dart
import 'package:posthog_flutter/posthog_flutter.dart';

await Posthog().capture(
    eventName: 'button_clicked',
    properties: {
      'button_name': 'signup'
    }
);

Next steps