BellyMystery
Ola Halvorsen Health & Fitness iPhoneiPadiPod touch
BellyMystery is a free Health & Fitness app for iPhone and iPad by Ola Halvorsen. Requires iOS 15.0. Updated October 26, 2026.
- Price
- Free
- on the App Store
- Size
- 40 MB
- Age 4+
- Updated
- Oct 26
- 2026 · v1.11
Screenshots
About BellyMystery
BellyMystery helps you notice patterns between what you eat and how you feel, without slowing down your day. Log a meal in under 30 seconds with a photo, and Belly Mystery identifies the likely ingredients for you. Log a symptom or a stool entry (Bristol scale) in under 15 seconds. Add a quick note about illness, medication, or travel so those get factored in too. Behind the scenes, BellyMystery's statistical engine looks for correlations between what you've logged, entirely on your device. When it finds something worth a second look, an AI-generated summary explains it in plain language, and always frames it as a pattern worth discussing with your doctor. BellyMystery never diagnoses you. When you're ready to talk to a doctor, export a clean PDF summary of your patterns and full diary directly from the app to share however you like. Why BellyMystery: Fast logging: meals, symptoms, and stools take seconds, not minutes. Works offline: logging never waits on the network. Photos are analyzed when you're back online. Private by design: no account, no login. Your diary lives on your device. Only a meal photo (to identify ingredients) and a computed summary of your patterns (to generate narration) are ever sent off-device, and neither is stored afterward. No ads, no trackers, no data brokers. BellyMystery includes a short free trial. After that, a single one-time purchase unlocks the app for life. No subscriptions. BellyMystery is not a medical device and does not diagnose, treat, or cure any condition. It's a tool for noticing patterns in your own data to discuss with a healthcare professional.
What’s new
Version 1.11 · Updated October 26, 2026
Small UI tweaks and fixes to make the logging experience as smooth as possible. Also expanded the dietitian directory so it's even easier to find a professional to share your food and symptom logs with.
App privacy
The developer, Ola Halvorsen, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Health & Fitness: Health
- Contact Info: Name
- User Content: Photos or Videos
- Identifiers: Device ID
Used for: App Functionality
Alternatives to BellyMystery
Looking for apps like BellyMystery? Here are 6 similar apps on the App Store. The highest rated is Tummily: Gut & IBS Tracker (4.7/5), and all 6 are free to download.
-
Dietitian App
-
Barossa Valley PT
-
KOR Studio
-
Athena Gym
-
Female Physio Co
-
Tummily: Gut & IBS Tracker
4.7
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| BellyMystery | – | Free | October 26, 2026 | |
| Dietitian App | – | Free | Jun 24, 2026 | Compare |
| Barossa Valley PT | – | Free | Jul 21, 2025 | Compare |
| KOR Studio | – | Free | Jul 20, 2026 | Compare |
| Athena Gym | – | Free | Feb 3, 2026 | Compare |
| Female Physio Co | – | Free | Sep 24, 2026 | Compare |
| Tummily: Gut & IBS Tracker | 4.7 / 5 (21) | Free | Jul 29, 2026 | Compare |
Compare BellyMystery with the top alternatives: ratings, updates, ASO score and keyword gaps →