How does Riddlefish keep track?

Kokuei

I started doing Riddlefish because it seemed like a harmless way to do a puzzle with the chance of a reward. Has anyone else used it for a while? They don't seem to have a log in page to see how many Pearls you've got but it doesn't seem untoward, I'm assuming it's probably tracked through the link they send you. I never multi-account or anything like that when comping, I'm just wondering if my stuff is actually being tracked or not because I can't see.

iMerc

I haven't seen anywhere you can find the amount of pearls you've got but I started getting emails this week with updates on whether I got into the top 30% for that day or not which is cool.