Documentation

Learn SpendMix

Guides, key concepts, and API reference to help you get the most out of your marketing data.

Getting started

Go from sign-up to your first budget optimization in about 15 minutes.

Sign up for SpendMix

Create your account in under a minute. No credit card required for the free trial.

Connect your ad platforms

Link Google Ads, Meta, TikTok, LinkedIn, and other platforms through secure OAuth. No CSV exports needed.

Configure your model

Pick your target KPI, set the lookback window, and let SpendMix run a Bayesian MMM model on your data.

View results & optimize

See channel-level ROAS, response curves, and run budget scenarios in the optimizer to find your best allocation.

User guides

Step-by-step instructions for every part of the platform, from connecting data sources to sharing reports.

Quick Start

Read guide

Connect Ad Platforms

Link Google Ads, Meta Ads, and Google Analytics 4 through OAuth.

Read guide

Configure & Run Models

Set up your marketing mix model and interpret the results.

Read guide

Budget Optimizer

Use response curves to find the best budget allocation across channels.

Read guide

View all 9 guides

Key concepts

Core ideas behind marketing mix modeling and how SpendMix puts them to work.

What is MMM?

A primer on Marketing Mix Modeling -- what it is, why it matters, and how it differs from attribution.

Understanding ROAS

How SpendMix calculates return on ad spend and what the numbers mean for your budget decisions.

Response Curves

What response curves tell you about diminishing returns and how to use them to avoid overspending.

Budget Optimization

How the budget optimizer works, how to build spend scenarios, and how to interpret the recommendations.

API Reference

Build on top of SpendMix with our REST API. Full authentication, endpoint docs, rate limits, and code examples.

API Documentation

Authentication, endpoints, rate limits, and examples

Browse by topic

Dig into specific areas of the platform.

Integrations

Connect Google Ads, Meta, TikTok, LinkedIn, Bing, and other platforms through OAuth.

Explore

Data & Models

How the Bayesian models work, what data you need, how refreshes happen, and how to read the results.

Explore

Account & Billing

Change your plan, check invoices, add team members, and tweak workspace settings.

Explore

Frequently asked questions

Quick answers to common questions. For the full FAQ, see our main FAQ section.

How much data do I need to run a model?

At minimum, 12 months of weekly spend and conversion data. More data (24+ months) gives the model better statistical power.

How long does a model run take?

Most models finish in 5-15 minutes depending on the number of channels and the length of your data history.

Can I export my results?

Yes. Every report can be exported as PDF or CSV, and you can pull data programmatically through the API.

Do I need to know statistics?

No. SpendMix translates the Bayesian output into plain-language insights. But if you want the full detail, credible intervals and model diagnostics are always available.

Need help?

Can't find what you need? Drop us a line and we'll help you sort it out.

Contact Support