Best Poop Tracker Apps 2026: Happy Poop, Plop, Balloon

If you searched for the best poop tracker app, you want to know which one to install and what it costs in money, ads, or data. Here are five apps worth comparing in 2026: Balloon, Plop, Happy Poop, Poopify, and bellySignal. bellySignal is our app, so we state its limits plainly and describe the others through their App Store listings and recent reviews as of October 3, 2026.

Quick comparison

Prices are in USD and were listed on the US App Store at the time of writing, October 3, 2026. Prices may change.

App	Platforms	Cost	Best for	US App Store rating
Balloon	iPhone, Apple Watch	Free download; $59.99 a year or $16.99 a month subscription	Coaching and AI fiber tracking	4.8 (1,104 ratings)
Plop	iPhone, Android	Free with ads; Premium $2.99 a month or $29.99 a year	Detailed IBS-style logs, free CSV export	4.7 (1,495 ratings)
Happy Poop	iPhone, Apple Watch, Android	Free with in-app purchases	Broad features in 34 languages	4.8 (2,672 ratings)
Poopify	iPhone, Apple Watch	Free; PRO $9.99 a year or $14.99 lifetime	Apple Watch logging, on-device AI	4.8 (6 ratings)
bellySignal	iPhone, Apple Watch, Android	Free; no subscription or in-app purchases	Stool, urine color, water, and food diary	No US ratings yet

Best poop tracker apps by need

Balloon for coaching and fiber tracking

Balloon’s App Store listing positions it as a gut health coach that turns poops, food, and symptoms into insights, tracks the fiber in meals with AI, and suggests habits. Recent updates added water tracking and PDF reports, and reviews praise its trends and weekly recap. Some reviewers report that many features require a subscription and that they had to create an account before seeing the price. It is also English only and not on Google Play, and its privacy label includes data used to track you.

Plop for detailed IBS-style logs

Plop, available since 2020, targets IBS, IBD, constipation, and diarrhea, according to its listing. You log Bristol type plus bloating, mucus, blood, and pain. The free tier includes unlimited logs, charts, CSV export, and Apple Health; Premium adds machine-learning analysis, PDF reports, and cloud sync. Its listing says data is stored locally by default, while its privacy label lists data used to track you, so read both. Reviews mention long ads in the free version and no Apple Watch app.

Happy Poop for breadth and languages

Happy Poop has the most ratings here and topped our US App Store search for poop tracker. Beyond Bristol type, color, mood, and photos, it covers pee, periods, habits, doctor sharing, an AI assistant called Zeps, and social features, in 34 languages. If you only want a quick log, the extras may be more than you need.

Poopify for Apple Watch and on-device AI

Poopify, released in July 2025, offers a native Apple Watch app with complications, Live Activities, iCloud sync, and an on-device AI assistant that requires Apple Intelligence. Its developer says data is processed locally with no third-party tracking, and its developer-reported privacy label says Data Not Collected. With six US ratings, public feedback is still thin. Poopify - Bowel Tracker on Android is an unrelated app from another developer.

bellySignal for a free stool, urine, and water diary

bellySignal is free with no subscription and no account required, and runs on iPhone, Apple Watch, and Android in 15 languages. On iPhone, home-screen widgets require iOS 17 or later; Android has a home-screen widget as well. Siri support is planned for version 1.6.2, which was still in preparation at the time of writing. Alongside Bristol type, stool color, and symptoms, it logs urine color on a 1 to 8 hydration scale, water with your own cup size, and food triggers, and exports a 90-day PDF. Trends compares this week with your usual patterns; cloud sync is not available. The honest limits: it launched in June 2026 and has no US ratings yet.

How to choose a poop tracker app

• Main job: a quick stool log, an IBS diary, coaching, or urine and water too?
• Platform: do you need Android or Apple Watch? Balloon and Poopify are Apple only.
• Cost: ads, a subscription, or a one-time purchase? Check what stays free.
• Privacy: read the privacy label and policy, and check whether an account is required.
• Reports: can you export CSV or PDF for a clinician?
• Track record: how many ratings does it have, and how long has it been out?

When to see a doctor

No app on this list can diagnose the cause of your symptoms; a tracker improves recall and can help you prepare notes for an appointment. See a doctor promptly for blood in stool or black, tarry stool, unexplained weight loss, severe belly pain, persistent diarrhea, or a lasting change in bowel habits, rather than waiting to collect more entries.

Keeping a diary with bellySignal

For appointment preparation, NIDDK suggests recording bowel movements and stool appearance for several days or weeks. If bellySignal fits, log Bristol type and color with each bowel movement, plus water and suspected foods. The Bristol Stool Chart guide explains the seven types, how to keep a bowel diary covers what to record before a GI visit, and Cara Care alternatives compares structured IBS programs.

The diary is stored on your device, and you can log without an account. Selected health values (stool type, symptoms, and any weight you enter) are sent to PostHog by default, and the settings switch controls PostHog only. Firebase Analytics receives usage events without those health values. See the privacy policy. Download bellySignal on the App Store or Google Play.