Case study · Web & software development
An IQ testing platform that turns free tests into paid certificates
BrainIQ came to us with an idea: a professional online IQ test that anyone can take for free, with the option to pay for their exact score and an official certificate. We designed and built the whole platform, front end and back end, including the payment system and an admin panel to run it.
The brief
What BrainIQ needed
The client wanted a website where people could take a properly structured IQ test, see how they performed and buy a certificate to prove it. For that to work, the platform had to do three things well.
- Feel credible. People will only pay for a result they trust, so the test and the brand had to look and feel professional.
- Make paying easy. A secure, simple checkout to unlock the full score and certificate.
- Be easy to run. The client needed to manage the website themselves, without calling a developer for every change.
The solution
What we built
A complete online IQ test
A 50-question assessment across five cognitive domains: pattern recognition, numerical reasoning, verbal analogies, spatial reasoning and logical deduction.
Instant results
Every test is scored the moment it is finished, with a free performance band so people see value before they are asked to pay.
Secure payment gateway
A smooth checkout lets people pay to unlock their exact IQ score, full analytics and a certificate, with payments going straight to the client.
Personalised certificates
A premium certificate design with each person's name, score, date and a unique certificate ID, delivered after purchase.
Admin back end
A custom control panel so the client can manage the website's settings themselves, without needing a developer for everyday changes.
Built to convert on any device
A fast, mobile-first design with trust signals throughout: a sample certificate, example questions, testimonials and clear pricing.
The journey
From free test to paid certificate
We designed the site around one simple journey: try the test for free, see your result band, then unlock the full picture.
Building trust
Content that gives people a reason to stay
Beyond the test, we added content that keeps visitors engaged and makes the brand feel established, from global IQ data to real feedback from test-takers.
The result
Live and generating revenue
BrainIQ launched successfully and is generating revenue from certificate sales. Visitors can take the test, get instant results and pay securely, all in one smooth journey, while the client runs the platform day to day through their own admin back end.
- Custom front end and back end
- Secure payment gateway
- Personalised certificates
- Admin panel for the client
- Mobile-first, fast design
Got an idea for a platform that takes payments?
Tests, bookings, memberships, portals or online tools: we design and build the whole thing, front end to back end.

