Hi, Does "growth book" only support the web environment? (not android/ios app environment)

I guess you can build your own client library OR connect with some data source

Growth Book can analyze results from any experiment no matter where it was run as long as you can get the data into an analytics tool like Mixpanel or a data warehouse like Snowflake or Redshift. If you need help actually implementing the experiment, we only have SDKs for web languages currently and plan to add support for mobile soon.