I was 0.06% off on eyeball. Beat me: https://eyeball.rory.codes.

This is fun!

Cool idea, love how simple it is. Minimal and clean.

10 round avg 4.5%.

A time limit would make sense imho. For extra challenge, add diagonal or curved lines.

I love these kind ones! Really engaging also yes as someone commented, the training mode would be an awesome idea.

Also, I tried this on laptop as well as my phone, I liked it more on my phone (I know the whole point is about precision though)

Love it!

It would be great to have a 'training' mode, where you get to repeat ones you miss. This would increase the learning speed.

Easy training- repeat the one you just borked Medium training- cycles through say 5 examples until you get all five within your target range (1%, 0.1%, whatever)

0.11% by luck, because I actually got lucky the target number was too close to zero, out of a big scale.

10 perfect hits in a row!

...

handleClick({clientX: els.bar.getBoundingClientRect().left + els.bar.getBoundingClientRect().width / state.n * state.target })

800

0 out of 1,600

I still missed. Even when there was centered text.

Maybe the human is the weakest link

This is fun but you need to put "click the line" higher on the page. It took me a while to figure out what I was looking at.

this is fun and helping me get grounded :). adding a timer would be a good idea, I think.

i made 0.87%

this is fun!

my best is 0.08%