About

I'm Karl, owner of PiDay-Shirts.  I'm an engineer (civil and environmental), not a graphic designer or web developer :) I started PiDay-Shirts to have some fun with math and pie and to share the fun of Pi Day (March 14) every day with shirts that inspire questions about math and science and yummy deserts!  Our designs tend to be minimalistic (did I mention that I'm not a graphic designer?)...some are unique and others are themes you may have seen before (there are only so many Pi puns out there).  None of them are AI generated.  The store is hosted by Shopify and all of the shirts are printed and fulfilled by Printful, one of the leading high quality print-on-demand providers.

Thanks for checking us out! If you're not interested in Pi Day attire, at least check out my mom's famous apple pie recipe.  It's one of our favorites!