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

  • Interest search tool reveals 1000’s of targetable Facebook™ interests your competition can’t find, so you can avoid the bidding war, be hyper-relevant and increase your return-on-ad-spend.
  • Interest highlighter tool saves you hours of manual copy-pasting by showing you exactly which pages in Facebook™Audience Insights have an associated interest that can be targeted with ads.

Paco Vermeulen

Founder InterestExplorer

Hi there, Paco here, I'm the founder of InterestExplorer. 

Our powerful suite of tools is used by thousands of Facebook™ marketers from countries all around the world.

I run Facebook™ ads every single day, with a great return 💰 (to me that's literally the only metric that counts).

But it wasn't always like that...

Let me share a personal 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 to sell 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 my side-gigs my main gig. I wanted to be able to support my family and pay the rent from the income from these 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 Facebook™ groups. 

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

That's not an effective business 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 of my money into a leaking bucket.

So I started looking.

And at some point, I can't even 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...

Facebook™'s documentation for developers.

I never ever read manuals - but I'm forever thankful 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 Facebook™ Marketing API - so unknown to 99% of my competitors. I also learned HOW you should actually use interest targeting - 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 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 with your ads.

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.

To be completely honest... at a larger volume the ROAS dropped a bit.

But still...not too shabby.

While my newfound Facebook™ API "hack" was effective, it still required a fair amount of repetitive manual work and time.

It involved copy-pasting, de-duplicating results, formatting, etc.

In short...I would still spend hours on targeting research.

To save myself some time I decided to create InterestExplorer, a 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 thousands of Facebook™ advertisers that want to outsmart their competition.

Just like you I guess?

PS: To close the open loop that started this story... last year I was able to quit my job and make my side-gigs the main gig ????

Don't take my word for it

I built something I needed myself.

Every single day I sell software licenses using my own software for targeting.

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 with related "interest suggestions" you could also target.

facebook ads interest suggestions

These are all broad interests, with large audience sizes.

The dropdown contains a maximum of 25 interest suggestions, for any input keyword.

And Facebook™ shows the exact same interests to all advertisers.

Which drives up the competition and the price of impressions.

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).

These 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. If you have done this at some point, I don't need to explain the frustration.

Again I came up with a clever idea to use the Facebook™ Marketing API 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 page names that are displayed, will be automatically scraped by the extension.

It then sends these 'words' to the API to check if there is matching interest. If yes, it highlights these words with a "target" Emoji 🎯 - so you'll know exactly which ones you can target.

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

Without our Chrome extension

  • You're looking at relevant Facebook™ pages in Facebook™ Audience Insights, but you don't know if you can target them.
  • You're copy-pasting Facebook™ pages into Ads Manager to find out if there is a matching interest you can target with ads.

With our Chrome extension

  • You're looking at relevant Facebook™ pages in Facebook™ Audience Insights, knowing exactly which ones you can target.
  • You're NOT copy-pasting Facebook™ pages into Ads Manager to find out if they can be targeted. You'll see that at a glance.

I've decided to bundle it with InterestExplorer (while I could very easily push it as an up-sell).

It's not publicly available. You need an InterestExplorer account to install and use it.

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

Or worse...

99% of Facebook™ advertisers face these problems:

  • Everyone is targeting the same interests. 
    So in many niches they are saturated. And to be honest, in most cases they weren’t even relevant to start with. Facebook™ assigns “interests” very easily to people, based on their Facebook™ page likes, comments , likes, shares, website visits (the pixel is everywhere), etc. But think about it…how “interested” is someone in dogs if they liked a friends photo of their new dog, just to be nice?
  • Ad costs only keep rising. 
    At the moment there are around 7 million advertisers running Facebook™ ads - that number is growing. Every year the average CPM and CPC across industries rises. At the moment, in our highly optimised campaigns, we see CPM’s between $30 and $50. You can easily double that amount near the end of every quarter, due to increased activity from big corporate advertisers that need to spend their budget. If you need to pay $50 to show you ad to 1000 people and assume an average conversion rate on your website…it means you REALLY can’t afford irrelevance.
  • Bad targeting will cost you. 
    Facebook™ needs to balance their objective of generating revenue with their mission to be a platform where users want to spend time and engage. This means that if you show an ad to an audience that’s not interested in it (indicated by a low click-through-rate), Facebook™ will punish you with high ad costs. Let’s be clear, your ad is important. But a very mediocre ad targeted at exactly the right audience might work. While the perfect ad targeted at the wrong audience will never ever work. You'll just pay the price...💸

Having access to (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. And I've explained what problems advertisers face because of it.

But...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

InterestExplorer, 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 organise 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 and hide your already saved interests from the search results.

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 supported languages.

Create accounts for your team and clients

With our Agency license you can invite an unlimited number of team members to create their own account. It also allows you to create up to 10 client accounts to involve them in the process.

Built-in layering feature for laser targeting 

Quickly distribute the interests you've found across "layers" to reach just the overlap between these interest buckets. This advanced targeting strategy hits just your perfect audience.

Find additional interests in Audience Insights

Our powerful Interest Highlighter Chrome extension runs in the background when you use Facebook™ Audience Insights. It shows you instantly which interests can be targeted with ads 🎯

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

If you're not using a 3rd party audience interest tool like InterestExplorer, then you're targeting and competing with almost every other advertiser on Facebook™ and driving up your costs! There are thousands of interests you've never been able to find, until now.

Adam from ParaCore & edison21

It has been a game-changer. When you switch over to InterestExplorer you're going to find hidden interests, target those and see less competition. A lot of my students are brand new to Facebook™ ads and it helps them to quickly get up and running. I definitely recommend it.

Joe from POD Ninjas

So here's the offer ????

If you decide to get InterestExplorer today:

  • You'll have access to 1000's of hidden Facebook™ interests others can't find, without spending hours on research and checking if interests can be targeted. Your first searches will already reveal interests you would've never thought of yourself.
  • You'll put Facebook™ Audience Insights on steroids with our Chrome extension that highlights targetable interests. No more wasted hours of copy-pasting to find out if interests can be targeted, because you can see it at a quick glance. 
  • You'll get all future updates we add to the software - so you'll never pay again.

You'll also get expert training

It doesn't matter if you are a brand new to Facebook™ ads or a seasoned ads veteran.

You'll get access to "Interest Targeting Intensive", our 45-minute expert training on Facebook™ ads interest targeting and interest research.

By the end of this training you'll know exactly how to structure your research, profiling and testing process and how-to find the most profitable interests for your campaigns.

In this training you'll learn:

  • Our repeatable 3-phase process to launch profitable Facebook™ campaigns.
  • The set of rules smaller advertisers should follow, to compete against giants.
  • When you MUST use interest targeting instead of lookalike audiences.
  • The "but nobody else" criterium to pick interest that isolate your perfect audience.
  • Why you should target seemingly unrelated interests...and how to find these.
  • Best practices for using InterestExplorer, with many practical examples!
  • How to create interest layers that beat the performance of single interests. 
  • Different targeting strategies to balance your inner scientist vs advertiser. 
  • The 10/10K rule I live by when choosing my Facebook™ campaign budget
  • Which mistake causes your campaigns to start of great and then decline...
  • The #1 targeting trap Facebook™ is trying to lure advertisers into.

Here's what our user Boris said about it:

It's a training that 'gurus' would sell - I am giving it to you because I want you to fully understand HOW interest targeting actually works. I want you to have success 👊

Next to this training you'll also find a support center with explainer videos and answers to commonly asked questions - to help you get the most out of our software.

And if you have any questions or get stuck, you'll get best-in-class support

Not from some outsourced rep but personally from me (the founder).

And finally... you'll also get our new Facebook™ tool as a bonus! 

We've recently built and launched a new tool...

How does it work?

It's really simple.

You select a Facebook™ page to track and enter your email address to create a tracker. Every 24 hours Adtrackr will check the Facebook™ page to send you an alert when they launched new ads.

By default the alert is an email, like this one👇

But you can also connect Adtrackr to 100's of other tools through our Zapier integration.

Like Slack for example.

So... you can use this tool to track your competitors (or inspirators) and be sure that you never miss it when they launch a new Facebook™ ad.

Free Adtrackr accounts normally allow you to create up to 3 active trackers.

But as a limited time bonus, I'll up your number of trackers to 10. 

Get lifetime access to InterestExplorer

We've launched this software a little over a year ago and only added more to the offer (new features, bonus softwares, expert training). But we didn't raise the price yet to match the increased value.

At it's current lifetime price it's a total no-brainer 🤯


Lifetime license


  • Unlimited Interest Searches
  • Unlimited Saved Projects
  • Unlimited CSV Data Exports
  • Audience Insights Extension
  • Interest Targeting Intensive
  • Adtrackr (including 10 trackers)
  • All Future Updates Included
  • 30-Day Money Back Guarantee

All prices exclude VAT which will be calculated at checkout. 

Have any questions? Get in touch.


If you decide to purchase our software and it doesn't meet your expectations, we'll refund your full purchase amount. Simple as that - no risk on your end. If you're not happy we don't want your money. Just contact us within the first 30 days to get a full refund.

DISCLAIMER: The results stated on this page are my personal results and results of my customers. Your results will vary and depend on many factors.