The folks behind the best-selling book, “What’s Your Poo Telling You?” aren’t satisfied with being mere bathroom reading material. So they’ve dropped a new iPhone app, the Poo Log, which allows you to time, log, and graph your BMs—and learn about your gastrointestinal health while doing so.

Via The Presurfer:

The ‘Poo Log’ is a digital timer and journal for recording and studying the wondrous uniqueness of each bowel movement. With a clever mix of bathroom humor and legitimate medical information, the ‘Poo Log’ allows the user to track his/her digestive workings and graph their ‘poo’ – all with one hand.

According to the app’s developers, AvatarLabs Inc, the tracker features medically accurate info that is suitable for all ages, and of course helpful tips such as, “Light a match. Now.”

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Image: AvatarLabs Inc