"This Facebook™ interest software enabled me to build a cold-traffic machine that banks $7.06 for every $1"

All you need to know in 2 minutes and 27 seconds

Hi there, I'm Paco Vermeulen, the founder and CEO of InterestExplorer.

Our powerful suite of tools is used by thousands of Facebook marketers.

We run Facebook ads every single day, with a great return 💰

But it wasn't always like that...

Let me share a background story.

I'm the entrepreneurial type. I always have a lot of ideas and see new opportunities all around me. Over time I've started a fair number of websites - selling anything from custom printed t-shirts to various ClickBank products to my own online piano courses.

I made sales.

But never very consistently.

Because I relied on organic traffic sources like Google and YouTube. Of course free traffic is great, but you can't control it.

And control was important to me.

Because back then I wanted to be able to make one of my side gigs my main gig.

I wanted to be able to support our family and pay the rent - just from the (passive) income generated by my side-projects.

So I started experimenting with paid ads - to have more control and drive up revenue.

That quickly turned into an obsession.

I chased every new strategy and tactic that I found on blogs and in FB groups. 

But I always ended up looking at the bottom of the "Amount spent" column in FB Ads Manager, knowing I spent more than I made.

That's not an effective strategy...

Because of the increasing competition on Facebook, my ad costs increased too.

Most of the campaigns I tested were too expensive - and sooner or later I was forced to turn them off. 

I had to find a solution first - instead of throwing more money in a leaking bucket.

I started looking.

And at some point, I can't remember where, I read about the existence of the Facebook Marketing API.

At first I didn't know what that was.

But as I was desperately looking for the next tactic I could test - I ended up reading...

FB's documentation for developers.

I never ever read manuals - but I'm glad I read this one.

I discovered that there are many more interests you can target on Facebook, than just the ones that are suggested in the Facebook Ads Manager. Literally tens of thousands. Hidden in the FB Marketing API - so unknown to 99% of my competitors. I also learned HOW you should actually use interest targeting on Facebook - something that almost no-one talks about online.

That's when I realised that the key to Facebook advertising success is to fish where (almost) no-one else is fishing.

By targeting hidden Facebook interests, that (almost) no-one else knows how to find.

Copy, visuals, sales funnels. Sure, that's all important. But meaningless if the targeting is off and you don't reach the right people.

So I fixed my targeting first.

And that paid off. Big time.

The very first test I did using hidden interests was already succesfull. My small experiment outperformed every other campaign

I ran before. In the screenshot below, you'll see 👇

I got a 319% ROAS on a cold-traffic campaign 🚀

Then I optimised my campaign further and I built a cold-traffic acquisition machine.

The screenshot below shows one of my active cold-traffic campaigns. It contains a bunch of ad sets. All targeting the US market. I'm just using interests to target and some basic demographics like age and gender. I exclude all my website visitors in this campaign - so it's 100% cold traffic.

The results speak for itself I think ☝️ 

The average ROAS is 7.06, meaning the campaign banks $7.06 for every $1 I put in.


While my newfound "hack" was effective, it still required a fair amount of repetitive manual work.

It involves copy-pasting, de-duplicating results and formatting. I would still spend hours on targeting research.

To save myself some time I decided to create InterestExplorer, my software that uses the Marketing API to reveal hidden interests in seconds - instead of hours ⏰

And that exact software became a huge success and is now used by hundreds of Facebook advertisers that want to outsmart their competition.

Just like you I guess?

PS: To close the loop that started this story: I still work a part-time job that I really like. While it's not necessary anymore from a strictly financial perspective - my side gigs are still not my main gig 😉

Don't take my word for it

Every single day I sell 15-25 licenses using my own software for targeting and analysis.

But it's not just me...

Thousands of smart marketers use this software (from freelancers to the big firms).

Here's what they said about it:

You need to use a 3rd-party Facebook interest tool, because Facebook's own tools for targeting research are broken!

I assume you know this already.

But just to be sure OK?

When you're using Facebook Ads Manager and type in an interest into the detailed targeting section, Facebook shows a dropdown menu with related interests you could also target: "interest suggestions".

facebook ads interest suggestions

These are all broad interests, with large audience sizes.

The dropdown contains a maximum of 25 interest suggestions.

And Facebook shows the exact same interests to all advertisers.

Mmmm... 🤔

Why would they do that?

I have two theories.

My first theory is that Facebook wanted to simplify the ads manager interface to not scare off unexperienced advertisers.

My second theory is that they want us to target broad audiences (more impressions to sell) and compete against each other for the exact same audience - because that drives up the bids in the exchange.

Like a bidding war. 

Then there's Facebook Audience Insights...

facebook audience insights page likes

It's a great tool to find relevant page likes (Facebook pages your audience might like).

They are sorted by 'Affinity' to indicate their relevance to your audience. It basically means people in your audience are for example 2471x as likely to like the page compared to everyone on Facebook.

But because pages and interests are two separate things, you often can't target these pages with ads. Problem is; Audience Insights doesn't show you which ones...

The only way to find out is to copy-paste them into Facebook Ads Manager, to see if a matching interest shows up.

I came up with an idea to use the Facebook Marketing API again to build a solution.

I ❤️ Facebook's API.

I've built a Chrome extension that runs in the background when you use Facebook Audience Insights. All the pages that are displayed, will be scraped by the extension.

It then sends these 'words' to the API to learn if there is matching interest. If yes, it highlights these words with a "target" Emoji.

Super simple, but very powerful. It will save you hours.

After extensively testing it with a group of beta users, I've decided to throw it in as a bonus when you purchase InterestExplorer.

These pieces of software complement each other perfectly to help you find the best interests without spending hours.

Or worse...

Having access to more (hidden) data means having an unfair competitive advantage. Who doesn't want that?

Facebook's tools are seriously lacking.

I've showed you that they just show a fraction of all targetable interests - or they don't show you if interests can be targeted.

That's also a good thing.

I mean, it can only be an advantage to you to have access to more data - if your competition doesn't have the same access.

Because no-one speaks about the Facebook Marketing API, I would say at this point it's still one of the best kept secrets in the online marketing world

Interest Search, is built to eliminate all the manual work I was doing before. It's a fully automated solution for you to search, explore, select and export hidden Facebook interests.

Here's how it all works 👇

Search for hidden interests related to any topic

Use the search bar to explore any broad topic you're interested in. Within seconds our software will use the Facebook Marketing API to reveal all related interests that can be targeted with ads.

Discover hyper-targeted interests in seconds

Sort the interests by audience size and use the search buttons to open a new tab with a search on Facebook or Google, to quickly assess the relevance of interests you're not familiar with.

Cherrypick the best suggestions to target

Clicking on an interest puts it in your selection box at the top of the page. You can then can copy the contents to the clipboard, save it to a project or export them to a downloadable CSV file.

Save and categorise your finds in projects

Save your interests into projects that you can continue to add to later on. You can create an unlimited number of projects to save and categorise your best interest finds.

Pick a language for localised suggestions

While the Facebook Marketing API will return most interest suggestions in English (en_US), you can also explore some additional interests in all of the other FB supported languages.

Create accounts for your team members

With our Team license you can invite an unlimited number of team members to create their own account. The only condition is that they're on the same email domain (@yourcompany.com).

Engage your clients

Many of our users are run agencies. They wanted to create accounts for their clients to they could help find the best Facebook interests (clients should know their business best right?). Our new Agency license allows to create up to 10 client accounts.

But that's not all...

Interests are not the only hidden Facebook objects

There are also "interest level statistics". 

When you analyse the performance of your campaigns in Facebook Ads Manager, you can look at statistics at the ad account, campaign, ad set and ad level. But not at the deeper (hidden) level of interests.

So as soon as you add more than 1 interest into your targeting, you can't see which of the targeted interests are actually bringing you results. While this data is available in Facebook's Ads Insights API.

I built an Analytics module that allows you to unlock these hidden statistics.

It works like this.

You'll connect your Facebook account and then select your ad account, campaign, ad set and ad.

Our software then uses the Facebook Ads Insights API to pull these hidden "interest level" stats from your account.

You can see things like impressions, clicks, spend and even purchases per interest.

There are a few limitations:

  • This only works when targeting interests (no behaviours, job titles, LLA's, custom audiences).
  • It shows the data for the last 7 days. No more than that.
  • It doesn't work with the new dynamic creative, just with "normal" ads.
  • It doesn't work for shared accounts through a Business Manager.

In short, it can only display data when Facebook has it for your campaigns. It can't do magic 🔮

But still... this is extremely valuable data that you can't get any other wayYou'll learn which interests work best for your target audience and which ones you should not use anymore.

That's insanely valuable info - that helped one of our users find out she was wasting 70% of her ad budget on one of these big "interest suggestions".

This is how your targeting gets better and better over time!


I just wanted to thank you - and give you feedback on how well the InterestExplorer really works with my meditation funnel! I cloned one campaign, updated the target audience with the search results provided by InterestExplorer - and it is running now on €0,71 instead of €0,88 CPL.

Georg Martinka


The real good stuff that InterestExplorer provides is being able to see the analytics on a granular level for every interest that you select in an ad set. Now instead of having to run $30 per ad set with maybe 10 or 20 different interests, I can throw these into 1 ad set with let's say a $100 a day budget and then use InterestExplorer to find the ones that are moving the needle.

Andrew Molz

So here's the deal 🤝

You'll get lifetime access, including: 

  • Unlimited searches to reveal hidden FB interests your competition can't find.
  •  Unlimited projects to categorise and save your interests + unlimited CSV exports.   
  • The new Analytics feature (BETA) to access hidden campaign stats at the interest level.
  • Our Chrome extension that highlights targetable interests in Audience Insights.
  • All future updates (like the recently launched Analytics) are included.

I've looked at alternative Facebook interest softwares out there, and I know for a fact that my offer is the best product at the best price. So feel free to compare - I know you'll find the same. 

And worst-case scenario, what if it doesn't match your expectations? 


No worries, you'll just get your full purchase amount refunded up to 30 days after your purchase with our 100% money back guarantee.

All the licenses are lifetime and always available - no fake urgency or scarcity here.

I hate these tactics too. 

Just one thing. I will increase pricing as soon as the Analytics feature is out of BETA - because I don't plan to forever sell my software (that has more features than any competitor) at 50% of their price.

You can choose between an Individual, Team or Agency license depending on your needs. And if you'd like to upgrade your license later on, you'll just pay the difference. 

...Basically it's a no-brainer to add this "secret weapon" to your arsenal.

Especially when you get in at this price point 👇


Choose one of our lifetime licenses.


Lifetime license


  • Unlimited Interest Searches
  • Unlimited Saved Projects
  • Unlimited CSV Data Exports
  • Interest Analytics (BETA)
  • Chrome Extension ($99 value)
  • 30 Day Refund Guarantee
  • All Future Updates Included

All prices exclude VAT which will be calculated at checkout.


Are you compliant with Facebook's policies?

Yes, absolutely. The app uses the Facebook Marketing API to query interest suggestions. That is approved API usage. Next to that Facebook explicitly approved the usage of their Ads Insights API to present you interest level campaign statistics.

Are there limitations on usage?

No, you can explore an unlimited amount of niches, save to as many projects as needed and export all the data you want. 

What's the difference between your licenses?

The Individual license is meant to be used by a single user. Then there is the Team license, which allows you to create sub-accounts for your team members. As long as their email address is using the same email domain as your main admin account (for example @mycompany.com). And finally there is the a Agency license, which allows you to invite unlimited team members and create 10 client accounts (users on different email domains). Contact me if you need more.

How do you compare to alternative solutions?

I've built the best Facebook interest tool at the best price. There's only one serious alternative, ConnectExplore, that costs $197 for a single license (mine sells for $99). Both tools offer hidden interest search and interest analytics. But they don't have team or agency licenses and they don't offer the powerful Chrome extension either. Easy comparison.

Do you offer a free plan or a trial?

No, I do not offer a free plan or trial accounts, but there is a 30-day refund guarantee. This way you can try it risk free and just get your money back if you don't like it and see results.

What's your refund policy?

When the software doesn't meet your expectations, you can request a full refund within 30 days after your purchase.

Which payment methods do you support?

Creditcards through Stripe and PayPal payments. 

Which languages do you support?

The application allows you to choose any of Facebook's supported languages to search for localised interests. Note that Facebook's API will always return the highest number of interests using the locale en_us (to manage expectations).

DISCLAIMER: The results stated above are my personal results. Your results will vary and depend on many factors. This website in not a part of Facebook™ or endorsed by Facebook in any way. Facebook™ is a trademark of Facebook™, Inc.