This app/website I found, Crappsy.com , lets you take photos of your poop. The poop . photos i uploaded were then analyzed by some algorithm that determines how healthy the stool is. Then, I got a "Crappsy Score", which was a fun way for me to measure my gut health over the long term. Based on my specific health, I got recipes, products, and recommendations on how to improve my gut health.
The website is:
It is also in ios and (I think) on android app stores, though I prefer the website because the app has some glitches. Overall, it is a very interesting app and I wanted to share it with you guys! 
I got the image below from reddit, where I found Crappsy.
