One-tap gut health tracking, now in 9 languages. Bristol logging, AI insights, Apple Watch, widgets, and Siri. No ads. No account. Private by default, fun by design.
Everyone does it. Might as well keep score.
One tap to log. Doctor-ready PDF reports when it matters. No ads, no account required, and your data stays on your phone unless you turn on sync.
Number Two is the fast, private way to track bowel movements and gut symptoms. Log from your iPhone, Apple Watch, widget, or Siri, understand your patterns in weeks, and walk into your next appointment with a report your doctor can actually use.
QUICK LOGGING
- One-tap Bristol Scale logging, the gold standard used by doctors worldwide
- Track color, urgency, pain level, and custom notes
- Tag entries with food, medication, and lifestyle factors
- Log symptoms separately to spot correlations
- Automatic Poop Score rates each log 1-10
BEAUTIFUL INSIGHTS
- Calendar view with color-coded daily history
- Contribution grid shows your year at a glance
- Regularity score tracks your consistency over time
- AI-powered weekly insights surface trends you'd miss
- Apple Health correlations: see how sleep, exercise, and your cycle affect your gut
EVERYWHERE YOU ARE
- Apple Watch app with quick log and regularity ring
- Home screen and lock screen widgets (6 sizes)
- Siri shortcuts: say "Log a number two" and it's tracked, hands free
- Log from your wrist, widget, or the app, all synced
- Syncs symptoms to Apple Health automatically
DOCTOR-READY REPORTS
- Generate professional PDF summaries for gastroenterologist visits
- Bristol distribution, time patterns, symptom correlations, and AI analysis
- Includes a discussion guide for your appointment
- Export raw data as CSV anytime
BUILT FOR PRIVACY
- All data stored locally on your device by default
- No account required to start tracking
- No ads, no trackers, and your health data is never sold or shared
- Optional secure cloud sync across devices
- Apple Health data never leaves your device
GAMIFICATION
- Streak tracking to build healthy habits
- Weekly leaderboard competitions (anonymous, opt-in)
- 30+ achievements to unlock
- Trophy cabinet for weekly winners
NUMBER TWO PRO
- Unlimited history (free shows 14 days)
- AI-powered digestive insights
- Apple Health correlations (sleep, exercise, steps, water, cycle)
- Extended stats: 30, 90, and 365-day periods
- PDF reports and weekly digest summaries
- Multiple profiles
- Lifetime purchase option available
Whether you're managing IBS, tracking dietary changes, or preparing for a doctor's visit, Number Two makes it easy, private, and even a little fun.
Terms of Use: https://getnumbertwo.app/terms
Privacy Policy: https://getnumbertwo.app/privacy
12 Jun 2026: I tried to help developers with this app; but, it suffers from too many issues from Syncing with other devices to loosing data entries saved before. UI has issues like calendar date does not default to ‘Today’. I finally gave up on it and the subscription after little improvement and dwindling email responses with developers.20 Mar 20:App is supposed to sync and backup to iCloud when logged in; however, the app does not sync between devices.
Developer Response
Edit: Again, Thanks for the report, and sorry for the trouble back in v1.0. Cross-device sync was fixed in v1.3.3, along with Watch sync reliability. If you give it another try and anything still feels off, email hello@getnumbertwo.app and I'll personally look into it. Originial:Thank you for trying Number Two and for taking the time to leave this feedback - it really helps us improve.You're right: sync between devices should just work when you're signed in, and we're sorry it didn't for you. We've identified the issue and a fix is already in progress.We'd love to make this right. If you reach out to us at hello@getnumbertwo.app, we'll ensure your data is fully synced across your devices and would like to offer you something for the trouble.We're a small team and we care deeply about getting this right. Thank you for your patience.
Now in 9 languages.
Number Two now speaks English, German, Spanish, French, Italian, Japanese, Korean, Brazilian Portuguese, and Simplified Chinese, across the whole app, your widgets, Apple Watch, and Siri. Choose your language in Settings, independent of your phone's.
Also in this update:
- Smarter weekly AI insights that stay current and stop repeating themselves
- Clearer loading screens that show what's happening
- Polish and fixes throughout
Everyone does it. Now in your language.
Version 1.4.1
The developer, Aner Sarid, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Health & Fitness
Contact Info
Other Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Aner Sarid
Size
55 MB
Category
Health & Fitness
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.