Poopmaster Pro

Poopmaster Pro has a super easy to use interface designed around efficiently tracking your digestive health (poops and farts). Simply tell it when you're in the bathroom and optionally log additional meta data to help you track how well you're doing.
This app is intended primarily for those suffering from ulcerative colitis or Crohn's disease, but others may find it useful as well.
The main features are:
• Easy to use interface
• Quickly assess your most recent entries with expressive and informative graphics
• Reminders to log statistics about your poop after you've finished in the bathroom
• Charts to assess your progress over time - see if your current habits are improving or deteriorating your health!
• Track both poops and farts
• And statistics relating to both (pain/urgency/solidity/etc)
• Ability to add notes to individual entries
• Option to keep a photo log
• Custom tracking of different statistics
• Silly noises
• Option to export your data either for migration to another device or to CSV (you can share with your doctor or run further analysis with spreadsheets on your computer)
• Excellent privacy - no personal information ever leaves the app without your permission
Everyone gets to try everything out with no obligation for a whole month, after which the subscription price is a pocket change level of 49¢ per month.
If you're already using the old Poopmaster, migration is super easy! (just make sure to upgrade Poopmaster to the latest version)
Subscription terms (in addition to agreeing to Apple's App Store terms): https://mikespsyche.com/poopmaster-terms-of-service/