Know what’s
causing growth.
Know what to do next.
Stella combines the signals your measurement tools see separately and shows you where to invest next.
Run a real holdout free · No credit card
Trusted by growth teams who left enterprise measurement vendors
250+ incrementality experiments a year · $400M+ in ad spend measured
Your measurement doesn’t agree.
That’s because every method sees something different. Stella weighs the evidence and turns it into one answer.
Illustrative.
With Stella, you know.
What caused it.
What to scale.
What to cut.
How much to spend.
What changed.
What to do next.
Illustrative.
Your marketing changes. So should the answer.
Stella keeps measuring and learning as you spend, test, and scale.
Illustrative.
Ask Stella what to do next.
All of that evidence, weighed and current, sits behind one question box.
Know when the answer is strong.
If the evidence isn’t strong enough to act on, Stella tells you.
Illustrative.
Works with what you already use
Google Ads
Meta
TikTok
Microsoft
Pinterest
Snapchat
X
AppLovin
Vibe+ more
Shopify
Amazon
WooCommerce
Salesforce+ more
BigQuery
Snowflake+ moreWhat do you want to know?
Start free, or bring us the marketing question you still can’t answer.
Use Stella yourself, or have our team run it for you. See pricing
The questions marketers actually ask.
What will I actually know that I do not know today?
Which channels are creating additional sales, which ones are taking credit for sales you would have made anyway, and how much room each one has left before returns flatten. Then what to do about each.
How is Stella different from my attribution tool?
Attribution is one signal. Stella also reads what your customers say drove the purchase, what holdout experiments prove, and what a media mix model expects as spend moves, then weighs each signal by the strength of the evidence behind it.
Do I need to be technical to use Stella?
No. Stella guides you step by step, and you can chat with it in plain language. If you would rather not touch it at all, our managed engagement does the holdouts, design, analysis, and reporting for you.
How much does Stella cost?
Free to start, then $750, $3,000 and $6,000 a month depending on how much of the loop you want running. Managed engagements are scoped and priced to what you need.