Customer Data Platform Lite

for Paid Advertisers

Audience management built for performance

Unlock more value from your data

We integrate everything from website interactions and transactions to your pre-defined customer models and cookie banner. This gives us more than 100X data points with 75% bigger opt-in to than your CRM to build audiences with.

Built exclusively for paid media

The audience management platform has been designed from the ground up to specialise in the needs of paid media. Every aspect has been tailored to the unique challenges of channel optimisation and paid media workflow to ensure you get the best results.

Create a future proof strategy

Our technology is cookieless and scales with your business from simple rules to management of offline customer models. Securing your first-party data strategy now and allowing it to grow over time.

Targeting options for every situation

Behavioural audiences lets you target any event on your website, from page visits to different traffic sources, to give limitless flexibility.

Understand how your user engagement can form new opportunities to identify value.

Transaction audience targeting allow you to tap into all the past purchase patterns of your customers. Target by specific products or overall lifetime value to reach your campaign objectives

Extensions allow you to go beyond web analytics and align with your existing customer definitions by custom attributes or defining complex models to match by.

With Hybrid audience targeting, combine and test the other three targeting types. Mix and match behavioural and transactions or use A/B testing to split your audience and measure the results.

Integrated with all major platforms


With proven results

An eCommerce advertiser in the UK (Health and Beauty) was looking to improve their past purchaser re-engagement on Facebook with future-proof technology. A two-month head-to-head test against traditional targeting resulted in:

75%   Bigger audiences

106% Better ROAS

44%  Better CPA

39%  More Purchases

Additional Features​​

A/B Testing

Overlap Analysis

Offline Attribute Upload

Data Clean Room Enrichment

Traffic Source

Historical Backdating

Lifetime Value Targeting

Custom Definitions

Explore other benefits

Audience management for teams

Audiences for consumers

Frequently Asked Questions

Yes! In fact we help our customers improve on their own compliance by using our platform to help manage consent. If you have a GDPR question we have our full data processing agreement here, or feel free to contact us using the form on the website

You can get started in minutes by connecting our platform to your existing data with just a few clicks. 

To keep audiences up to date there is a small code snippet that needs to be placed on your website (or in your tag management solution) by your developers and then away you go! 

Unlike cookies, we send hashed email and phone numbers rather than anonymous cookie IDs to build your audiences. These are much more stable identifiers (as cookies don’t stay on devices long if they are set at all) and provide a great way to target more of your known customers over a longer period of time on more devices and more channels. (We still think cookies are great for targeting unknown site visitors.)

Running both a cookie audience and Thirty-One Circles audiences is the best practice to reach as many people as possible. 

Thirty-One Circles is the evolution of CRM list targeting and is much more optimised for paid media so that you get more performance from the same customers. Unlike CRM lists, our opt-in audiences are bigger, have greater segmentation options, integrate automatically and give you the most up-to-date data. 

Thirty-One Circles has many of the attributes of a CDP however, it is focused on getting the maximum return for your investment for paid media and so is optimised towards audience activation rather than doing “everything for everyone”. This means you get all the performance from a CDP with a fraction of the cost and makes advanced audience segmentation and the ROI boost from this accessible to every advertiser. 

We have one-click integrations with:

Data Sources:

  • Google Analytics
  • Google Analytics 4 (Big Query and API)

Audience Destinations:

  • Meta
  • Google Ads
  • X (Twitter)
  • Pinterest
  • Snapchat
  • TikTok

We also accept CSV imports to backdate any data you need and can create custom connections just for you. Please  contact us to find out more.

Looking for CRM platforms or your web platform provider? Thirty-One Circles connects to the front end of your website rather than your CRM or website tech stack. This means Thirty-One Circles works with all tech stacks and CRMs to give you more flexibility while boosting your audience-building capabilities. 

No! We update your data using the latest APIs so that your learning phase is not reset when we update the audience. 

Yes! The platform is all based around stable first-party data so provides an answer to audience targeting after third-party cookies.

The Audience Builder has been built from the ground up to meet and surpass industry standards of security and data compliance. If you are looking for more information, please review this page or feel free to contact the team to answer your specific questions.
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