41% of ad spend is wasted

Clarity in Marketing Performance

Finally know which ads actually drive new revenue
without the guesswork
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Incrementality
Media Mix Modeling
Always-on Incrementality

We give your the power you looking for

Incrementality
Turn advanced marketing insights into measurable impact
Media Mix Modeling
Turn advanced marketing insights into measurable impact
Always-on Incrementality
Turn advanced marketing insights into measurable impact
Incrementality
Turn advanced marketing insights into measurable impact
Media Mix Modeling
Turn advanced marketing insights into measurable impact
Always-on Incrementality
Turn advanced marketing insights into measurable impact

The complete marketing measurement toolkit.

Incrementality
Run clean geo holdouts to measure the true lift of your ads.
Media Mix Modeling
Build budget plans that tie directly to true revenue growth.
Always-on Incrementality
Spot waste, reallocate spend, and prove the incremental value — in real time.

How Stella Works

From your data to your decisions
Built for Marketers
Move beyond platform-reported ROAS and get to the truth about their performance.
Upload Your Data
Stella transforms your raw numbers into a clean dataset for analysis.
Get Clear Insights
See which ads, channels, and campaigns are actually driving revenue.

The smarter, more affordable way to measure marketing

Why marketers choose Stella over the other guys
Compare
Stella clearly win compared to others
Flat monthly fee
One low price. No scaling costs.
Advanced insights, simplified.
PhD researched models, without complexity.
Marketing Team-friendly
Made for marketers, not data scientists.
AI-powered expertise
Your own data scientist, built-in.
.CSV-ready
Upload and get results instantly.
The other guys
Flat monthly fee
One low price. No scaling costs.
The other guys
Advanced insights, simplified
PhD-researched models, without complexity.
The other guys
Marketing Team-Friendly
Made for marketers, not data scientists.
The other guys
AI-Powered expertise
Your own data scientist, built-in.
The other guys
.CSV-ready
Upload and get results instantly.
The other guys

Helping leading brands prove the true impact of their ads

Marketers across industries use Stella to measure what really drives revenue, without the guesswork.
1.36 iROAS
48% iFactor
Stella made incrementality testing simple, actionable, and backed by real science. It’s been a game-changer for how we evaluate performance, especially since so much of what we do is about leveraging in-platform cost controls.
Jack Farrell,
VP of Ecommerce, Popsockets
$155k
Incremental Revenue
We always suspected that we didn't have the proper tools to measure the impact so this is awesome to see the impact blended.
Jerel Blades
Head of Growth, Tushy
-$42k
From turning off
Branded Search
The study showed us that branded ads are actually driving incremental revenue. We now know we can’t afford to go completely dark.
Michael Garrett
CEO, Plunge
1.36 iROAS
48% iFactor
Stella made incrementality testing simple, actionable, and backed by real science. It’s been a game-changer for how we evaluate performance, especially since so much of what we do is about leveraging in-platform cost controls.
Jack Farrell
VP of Ecommerce, Popsockets
$155k
iRevenue
We always suspected that we didn't have the proper tools to measure the impact so this is awesome to see the impact blended.
Jerel Blades
Head of Growth, Tushy
-$42k
From turning off Branded Search
The study showed us that branded ads are actually driving incremental revenue. We now know we can’t afford to go completely dark.
Michael Garrett
CEO, Plunge

Simple pricing. Powerful measurement.

Choose the tools you need. Save up to 17% when you bundle.
‍
1 Tool - $2,000/mo
2 Tools - $3,500/mo
3 Tools - $5,000/mo
Stella Media Mix Modeling
$2000/month
$2500/month
Start free trial
Plan budgets smarter
PhD Proprietary Bayesian MMM
Out-of-sample accuracy checks
Channel-level iROAS curves
Calibrate with priors
Flexible control variables
Supports DTC, Retail, Amazon, & Geo
Robust Scenario Planner
MOST POPULAR
Stella Incrementality
$2000/month
$4000/month
Start free trial
Prove campaign lift
Geo Holdouts & Inverse Holdouts
Causal Impact Analysis
Supports 2-cell and 3-cell studies
Post-treatment window analysis
Scale testing for marginal iROAS
Statistically sound location selection
Multiple models to validate results
Stella Always-On Incrementality
$2000/month
$2500/month
Start free trial
Daily incremental reads
Daily data ingestion
Meta, Google, Shopify, or SnowFlake
Automated causal analysis
Only Displays valid results (MAPE & R²)
Auto-adjusts for confounders
Heirarchical results rollup
Our most robust fine-tune AI model

Everything you need to know about Stella

Quick answers to the most common questions from marketers.

What is Stella?

Stella is an AI-powered marketing measurement platform that makes advanced analytics accessible without needing a data science team. With three tools: Incrementality, Always-On Incrementality, and Media Mix Modeling, Stella helps marketers prove true iROAS, measure channel impact, and plan smarter budgets.

Who should use Stella?

Stella is built for marketing leaders who want clarity on which ads truly drive growth. Whether you are an ecommerce brand, retailer, or omnichannel business, Stella gives you enterprise-grade insights without enterprise-level costs.

How can I get started with Stella?

You can start by uploading your data into Stella, exploring the self-serve demo, or booking a live walkthrough with our team. No integrations are required. Just upload a CSV or Google Sheet and you are ready to run your first study.

What are Stella's pricing plans?

Each tool is $2,000 per month. You can bundle 2 tools for $3,500 per month (12.5% off) or all 3 tools for $5,000 per month (17% off). Pricing is flat with no hidden fees or scaling costs. As your business grows, your Stella cost stays the same.

How does Stella ensure the privacy and security of data?

Stella uses enterprise-grade encryption and follows strict global privacy standards, including GDPR. We do not ingest any personally identifiable information (PII), and your marketing data stays secure at every step.

Is there customer support available for Stella users?

Yes. Stella includes onboarding, email support, and optional hands-on service (+$1,000 per month) for teams who want deeper guidance. Most users find Stella intuitive, but our team is always available to help with questions or strategy.

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The AI-Data
Scientist For Marketers

Turn advanced marketing insights into measurable impact
Get startedGet started
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Trusted By The Marketing Teams Behind:

Uncover the True Impact of Your Marketing

With Stella, you can isolate what’s driving real growth across all channels. Gain the clarity to optimize your budget and focus on what truly moves the needle by measuring incremental impact.
Pinpoint Incremental Revenue Across Channels
Stella’s AI-powered incrementality testing reveals how each campaign contributes to your bottom line.
Run Tests with Minimal Spend and Maximum Confidence
Stella helps you identify the perfect regions for holdouts, ensuring reliable results with lower investment.

Optimize Your Entire Marketing Mix with AI

You deserve data-backed insights that transform how you allocate budgets. Stella’s AI MMM gives you the tools to forecast, plan, and maximize ROI across all channels.
Isolate Channel Impact with Precision
Stella accounts for external factors like seasonality, holidays, and trends to show you exactly what’s working.
Budget Smarter with Stella’s Optimizer
Stella’s intuitive optimizer tells you where to invest for the greatest contribution, even when scaling budgets.

Your Partner in Precision Marketing Measurement

Plan
Execute
Analyze
Select the Perfect Holdout Regions
Stella helps you pinpoint the most effective holdout regions, maximizing statistical significance with minimal ad spend.
Execute Your Study Without Costly Mistakes
Guided every step of the way, Stella ensures your incrementality study is set up accurately for reliable results.
Analyze Results with Expert Guidance
Stella’s AI data scientist interprets your results, turning insights into clear, actionable recommendations for your marketing strategy.

Affordable,
Powerful Incrementality Testing

Stella provides end-to-end support for incrementality testing, making advanced
marketing insights accessible and actionable. Stella starts at a flat rate of $2,000 per month
for all spend levels with data sharing from Google Sheets.

Stella Media Mix Modeling

$2,000/month

$2,500/month

Hands-On-Service
+ $500/month
Features
  • Adstock Transformation
  • Saturation Effects
  • Channel Distribution
  • Forecasting
  • Saturation Curves
  • Multi-Linear Regression
  • Control Variables
  • 6-Month Budget Optimization
Features
  • Adstock Transformation
  • Saturation Effects
  • Channel Distribution
  • Forecasting
  • Saturation Curves
  • Multi-Linear Regression
  • Control Variables
  • 6-Month Budget Optimization
Get startedGet started
Best Value
Stella Incrementality + MMM

$3,500/month

$4,000/month

Hands-On-Service
+ $500/month
Stella Incrementality Features:
  • Geo-lift studies
  • Inverse-Holdout studies
  • Up to 10 individual users
  • Scale testing
Stella Media Mix Modeling Features:
  • Adstock Transformation
  • Saturation Effects
  • Channel Distribution
  • Forecasting
Stella Incrementality Features:
  • Geo-lift studies
  • Inverse-Holdout studies
  • Up to 10 individual users
  • Scale testing
Stella Media Mix Modeling Features:
  • Adstock Transformation
  • Saturation Effects
  • Channel Distribution
  • Forecasting
Get startedGet started
Stella Incrementality

$2,000/month

$2,500/month

Hands-On-Service
+ $500/month
Features
  • Geo-lift studies
  • Inverse-Holdout studies
  • Incremental impact analysis
  • Scale testing
  • Causal impact analysis
  • AI Data Scientist guidance
Features
  • Geo-lift studies
  • Inverse-Holdout studies
  • Incremental impact analysis
  • Scale testing
  • Causal impact analysis
  • AI Data Scientist guidance
Get startedGet started

Full-Service Commercial Analytics For $10,000


When taking action on the right insights is crucial, having expert support can make all the difference. In addition to our AI-powered platform, Stella offers full-service media mix modeling and incrementality study execution to ensure your data is accurate, your insights are reliable, and your strategy is built for profitable growth.

Our team of expert data scientists and senior marketers handle everything from data collection to final analysis, delivering clear, actionable recommendations tailored to your business. Whether you prefer a self-serve approach or a hands-on partnership, Stella gives you the confidence to make data-driven decisions with precision.

Let us do the heavy lifting while you focus on execution.
Click here to get started.

Need Expert Help? We’ve Got You Covered.


When taking action on the right insights is crucial, having expert support can make all the difference. In addition to our AI-powered platform, Stella offers full-service media mix modeling and incrementality study execution to ensure your data is accurate, your insights are reliable, and your strategy is built for profitable growth.

Our team of expert data scientists and senior marketers handle everything from data collection to final analysis, delivering clear, actionable recommendations tailored to your business. Whether you prefer a self-serve approach or a hands-on partnership, Stella gives you the confidence to make data-driven decisions with precision.

Let us do the heavy lifting while you focus on execution.
Click here to get started.

Find the true marketing impact of every single dollar with stella

Get startedGet started
Virtual Demo

Frequently asked questions

What is Stella?

Stella is an AI-powered data scientist built to make advanced marketing measurement accessible for mid-market ecommerce brands. With specialized tools for Incrementality Testing and Media Mix Modeling, Stella helps marketers accurately measure channel impact and optimize ad spend, all while guiding you through each study for reliable, actionable results.

How can I get started with Stella?

You can begin with Stella by exploring our virtual demo or booking a live demo with our team, who will walk you through the platform and answer any questions you may have.

How does Stella ensure the privacy and security of data?

Stella uses top-tier encryption and follows strict global data protection laws, including GDPR, to secure user data. We conduct regular security audits to maintain the highest privacy standards, ensuring your data's integrity. We also do not ingest any PII data into our platform.

Who should use Stella?

Stella is designed for marketing leaders at mid-market ecommerce brands, especially those with annual revenues between $10 million and $50 million or a minimum ad spend of $1 million annually. With Stella, businesses gain powerful, actionable insights to optimize their marketing strategy efficiently.

What are Stella's pricing plans?

Each Stella tool is just a low flat-rate of $2,000/mo for analysis done from Google Sheet data. Stella's data ingestion pricing is based on monthly ad spend level. The more data you want to track to more expensive data costs become. This model ensures competitive pricing for quality analytics services for all business sizes.

Is there customer support available for Stella users?

We offer a detailed onboarding process and email support to ensure smooth usage. Stella is designed for ease of use, making complex data sets manageable without extensive external support but we do provide hands-on support when requested typically responding within 24 - 48 hours.