Frequently Asked Questions

A curated summary of the top questions asked on our Slack community, often relating to implementation, functionality, and building better products generally.
Statsig FAQs

How to preserve the Statsig stable id when users navigate from mWeb to mobileApp?

Yes, it is possible to preserve the Statsig Stable ID across different platforms such as mWeb and mobileApp. The Stable ID is generated for anonymous use cases and is persisted in local storage. For signed-in users, consistency is ensured across different surfaces, such as mobile app vs desktop, as long as there's a userID used across them.

If you're experiencing issues with StableID changing across subdomains or platforms, one possible solution is to store the StableID in a cookie and reuse it. You can store and retrieve your own id and use the overrideStableID method on the SDK to send it to Statsig. Your overridden id will always take preference. This way, you can set the StableID for not logged in users and your in-house id for people that are logged in.

Here's an example of how you can override the StableID:

javascript await Statsig.initialize(  "client-sdk-key",  null,  {    overrideStableID: '<passed via cookie or via db lookup>'  } );

This should ensure that both your marketing site and main app use the same StableID, allowing you to run experiments that span both sites.

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What builders love about us

OpenAI OpenAI
Brex Brex
Notion Notion
SoundCloud SoundCloud
Ancestry Ancestry
At OpenAI, we want to iterate as fast as possible. Statsig enables us to grow, scale, and learn efficiently. Integrating experimentation with product analytics and feature flagging has been crucial for quickly understanding and addressing our users' top priorities.
Dave Cummings
Engineering Manager, ChatGPT
Brex's mission is to help businesses move fast. Statsig is now helping our engineers move fast. It has been a game changer to automate the manual lift typical to running experiments and has helped product teams ship the right features to their users quickly.
Karandeep Anand
At Notion, we're continuously learning what our users value and want every team to run experiments to learn more. It’s also critical to maintain speed as a habit. Statsig's experimentation platform enables both this speed and learning for us.
Mengying Li
Data Science Manager
We evaluated Optimizely, LaunchDarkly, Split, and Eppo, but ultimately selected Statsig due to its comprehensive end-to-end integration. We wanted a complete solution rather than a partial one, including everything from the stats engine to data ingestion.
Don Browning
SVP, Data & Platform Engineering
We only had so many analysts. Statsig provided the necessary tools to remove the bottleneck. I know that we are able to impact our key business metrics in a positive way with Statsig. We are definitely heading in the right direction with Statsig.
Partha Sarathi
Director of Engineering
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