Tools
Free things we built because the answer was easier to show than to write. Each one runs on published numbers, and each one tells you where those numbers came from.
The Fiber Calculator
Your daily target from the federal reference intakes, then build a real day from USDA numbers and watch the gap close. Most people are further off than they think — and closer to fixing it than they expect.
Open CheckerThe Poop Frequency Checker
Pick your Bristol type and how often you go. See where that sits against what large population studies actually found — no verdicts, just the published range and where you land in it.
Open QuizThe Poop Quiz
Eight questions, four gut types, one shareable result. The one readers keep sending to their group chat.
Open GuideThe Best Gut Health Podcasts
Our ranked guide to the shows worth your commute — every show checked to be still publishing, every host looked up, and the episode to start on.
OpenWhy we build these
A lot of gut-health questions are really arithmetic wearing a costume. How much fiber is enough, how far off you are, whether your week is unusual — those have answers, and the answers are more useful when you can put your own numbers in rather than read someone else’s example.
So every tool here is built on figures we can point at: the federal reference intakes, the USDA’s food composition database, the studies that established the reference ranges. The sources are listed on each page, under the tool, where you can check them. Nothing here diagnoses anything, and nothing here is a substitute for a clinician who knows your history.
Educational tools, not medical devices or medical advice. If something about your digestion is bothering you or has changed, that is a conversation for a clinician.