




Take a CONKA SPARK: tap through quick images and get your CONKA Score. Set your baseline, start CONKA, and watch the number move.
Or try a quick SPARK here, free ↓Your first month is where you see it. Three steps, all in the free app.

Baseline set
Three 90-second CONKA SPARKs set your baseline CONKA Score. Then two a week.


Flow in the morning, Clear in the afternoon. Log each shot in the app with a tap.

Your 30-day brain report: your best days, what drives them, and your score against your baseline.
Your score is how quickly and accurately your brain processes what it sees. There is nothing to study for, and nothing to practise.

Image flashes

Noise mask
You tap
Each image shows for a fraction of a second, then a pattern wipes it. Your brain answers before you can strategise.
The images change, so there are no answers to learn. A peer-reviewed study found no significant learning effect over repeat tests.
Scientific Reports, 2019No reading, maths or general knowledge. Language, education and culture give no one a head start.
Spotting animals is one of the brain’s oldest reflexes. The task lights up 32 brain regions, so your score is your whole brain at work.
What SPARK stands for
The name is the test: how fast and how accurately your brain tells an animal from everything else.
Built on Cambridge research and validated in NHS clinical trials. CONKA co-founder Humphrey Bodington built it after repeated concussions ended his playing career, so anyone could see their brain measured. 7,593 tests from 712 people so far.
See the app dataBaseline to retest, from people who took CONKA and tracked it in the app.

+36.7%
Score 60 to 82
Jade Shekells
GB7 Womens - Rugby 7s

+29.0%
Score 55 to 71
Finn Russell
Bath Rugby

+24.7%
Score 66 to 82
Nimisha Kurup
Bank of America

+20.5%
Score 69 to 84
Jack Willis
Stade Toulousain
Every SPARK adds to the picture. Here is what you get with it.

Free on iOS and Android, no subscription needed. Take a SPARK today and you have a number to beat.
New to CONKA? Explore Flow and ClearReviewed