# Flutter experiments installation - Docs
1. 1
## Install the package
Required
Add the PostHog Flutter SDK to your `pubspec.yaml`:
pubspec.yaml
PostHog AI
```yaml
posthog_flutter: ^5.0.0
```
2. 2
## Platform setup
Required
## Tab
Add these values to your `AndroidManifest.xml`:
android/app/src/main/AndroidManifest.xml
PostHog AI
```xml
[...]
```
Update the minimum Android SDK version to **21** in `android/app/build.gradle`:
android/app/build.gradle
PostHog AI
```groovy
defaultConfig {
minSdkVersion 21
// rest of your config
}
```
## Tab
Add these values to your `Info.plist`:
ios/Runner/Info.plist
PostHog AI
```xml
[...]
com.posthog.posthog.API_KEY
com.posthog.posthog.POSTHOG_HOST
https://us.i.posthog.com
com.posthog.posthog.CAPTURE_APPLICATION_LIFECYCLE_EVENTS
com.posthog.posthog.DEBUG
```
Update the minimum platform version to iOS 13.0 in your `Podfile`:
Podfile
PostHog AI
```ruby
platform :ios, '13.0'
# rest of your config
```
## Tab
Add these values in `index.html`:
web/index.html
PostHog AI
```html
...
...
```
3. 3
## Implement your experiment
Required
Experiments run on top of our feature flags. You can define which version of your code runs based on the return value of the feature flag:
```dart
if (await Posthog().getFeatureFlag('your-experiment-feature-flag') == 'test') {
// Do something differently for this user
} else {
// It's a good idea to let control variant always be the default behaviour,
// so if something goes wrong with flag evaluation, you don't break your app.
}
```
4. 4
## Run your experiment
Required
Once you've implemented the feature flag in your code, you'll enable it for a target audience by creating a new experiment in the PostHog dashboard.
5. 5
## Next steps
Recommended
Now that you're running experiments, continue with the resources below to learn what else Experiments enables within the PostHog platform.
| Resource | Description |
| --- | --- |
| [Creating an experiment](/docs/experiments/creating-an-experiment.md) | How to create an experiment in PostHog |
| [Adding experiment code](/docs/experiments/adding-experiment-code.md) | How to implement experiments for all platforms |
| [Statistical significance](/docs/experiments/statistics-bayesian.md) | Understanding when results are meaningful |
| [Experiment insights](/docs/experiments/analyzing-results.md) | How to analyze your experiment data |
| [More tutorials](/docs/experiments/tutorials.md) | Other real-world examples and use cases |
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