Onaka Log
IBS self-care with FODMAP
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Onaka Log is a self-care app for managing IBS and gut issues (pain, diarrhea, constipation, gas, bloating). Track bowel movements, meals, water, and condition in 10s to find patterns.
[Version 2.0 Major Update]
- Completely removed ads on saving. Free, 100% ad-free daily tracking.
- New "AI Analysis (Beta)" gently reviews your past 30 days of data.
- Added log search, medication-gut analysis, and user-requested tools.
[Key Features]
■ 10-Second Logging
- Bristol Scale tracking with support for multiple stool types in one log.
- Meal logging with automatic FODMAP tag matching.
- Real-time hydration presets that auto-sum your daily intake.
- Fast inputs for pain (5 levels), bloating, stress, and sleep.
- Favorite meds for 1-tap logging; choose standard symptoms to add to Home.
- Photo attachments for stool and meal logs (Plus).
■ AI Analysis (Beta)
- AI summarizes 30-day trends and subtle triggers.
- 3 free uses on free sign-up. Unlimited with Onaka Log Plus.
- Review data before sending; only 30-day logs go to the cloud.
- Copy data in chat-ready format for external AI tools.
■ FODMAP Guide
- Japan-focused food database (natto, miso, udon, etc.).
- Easily spot low-FODMAP options to remove meal guesswork.
■ Trends & Log Search
- View meal/stress vs symptom correlations as reference.
- "Meds & Gut" compares symptoms before and after medication.
- Search by keyword, date, or category.
- Export 1-week PDF summaries to share with doctors.
■ Self-Care Exercises
- 3-Min Gut Awareness Sheet: Self-check habits (not a diagnosis).
- Behavioral Experiment Log: Test rigid assumptions step-by-step.
- SOS Breathing: 4-4-4-4 box breathing for sudden flare-ups.
- Audio-guided Autogenic Training for relaxation.
■ Privacy-First
- Data stored locally on device. No login needed for daily logs.
- Zero ads. Health data is never used or shared for advertising.
[Recommended For]
- People managing persistent gut discomfort or IBS.
- Those anxious about sudden pain during commutes or meetings.
- Anyone tracking food triggers, alternating bowel habits, or meds.
- Those preparing symptom summaries for doctor appointments.
[Important Notices]
- References are available under Settings > References & Sources.
- Not a medical device. Does not diagnose, treat, or prescribe.
- Displayed data is for reference only. For severe symptoms (bloody stool, high fever, rapid weight loss), consult a doctor immediately.
- Free tier requires an internet connection to save logs. Offline saving is available with Plus.
[Support & Subscription]
Support: In-app support page.
Onaka Log Plus is an optional auto-renewing monthly subscription (unlimited AI analysis, photo attachments, offline saving). Managed via Apple ID / App Store settings.
Terms: https://onaka-log.electoria.jp/terms/
Privacy: https://onaka-log.electoria.jp/privacy/
more Main updates in version 2.2.1:
【Home and Records】
・Choose which recording items to show on Home.
・Preview entry forms in Customize and add water, sleep, medication, and symptoms to Home.
・You can now change record times manually.
・Improved the Save and Delete controls and the layout when using larger text.
【Symptoms and Daily Review】
・Record nausea, belching, gas, and other symptoms on their own screens.
・Use numbered buttons to select the level of standard symptoms and optionally add context.
・Daily Review brings together five optional feeling ratings and a diary. Existing stress records remain available to view and edit in Calendar.
【Feedback and Requests】
・Added a tab in Announcements where you can read feedback, requests, and responses from the team.
This update also includes minor improvements and bug fixes.
Please share feedback or report issues via the Support page in Useful Resources.
2.2.1 2d ago
Main updates in version 2.2.0:
【Home and Recording Screens】
We have updated the appearance and controls to make daily recording a little easier to keep up with!
・Updated Home, the record category list, and each recording screen with new illustrations and a consistent design.
・Updated "Batch Entry" so you can use the same order and controls as when recording one item at a time.
・Tap the date at the top of Home to open records and daily reviews for a past day.
【Sleep Records】
・In addition to sleep quality, you can now record bedtime, wake-up time, and notes.
・Set your usual bedtime and wake-up time to use as a guide when entering records.
【Water Records】
・You can now record the time, drink type, amount, and notes for each drink.
・Choose drink types such as water, tea, and coffee from illustrations.
・You can also review water records by time in the calendar.
【Daily Review】
・You can now record tension, anxiety and worry, irritation, impatience, and fatigue, each on a five-point scale.
・Choose only the feelings you want to record. You can also keep your diary from the same screen as before.
【Medication, Custom Symptoms, and Meals】
・You can now add notes to medication and custom symptom records.
・In quick meal entry, you can now edit the names and emoji of items you added yourself and change their order.
・After hiding a custom symptom, you can still keep and edit its past records and notes.
【Other Updates】
・You can now change the date while editing a record and move it to another day.
・Updated the filters and display in the calendar's record search.
・Fixed an issue so that entered content is kept when returning to a recording screen after editing settings.
・Updated startup and data migration processing when upgrading from an earlier version.
・Adjusted the display for larger text sizes and dark mode.
・Other minor improvements and bug fixes.
Please share your feedback or report any issues via the Support page in the Useful Resources section.
2.2.0 6d ago
Main updates in version 2.1.4:
【Period Tracking】
・Users who selected female as their gender can now log period records from "Log" in the center.
・Easily record the start and end with two options: "Period Started" and "Period Ended".
・Log menstrual flow, cramps, symptoms of concern, and notes all from the same screen.
・Added period items to "Batch Entry" (only displayed when set to female).
【Analysis: "Period & Stomach"】
・Added "Period & Stomach" to "Today's Analysis" (only displayed when set to female).
・Review your period records side by side with stomach pain, bowel movements, and other logs.
・As you record more start and end dates, estimated period duration and cycle length will be displayed as a reference.
*Estimates are for reference only and are not intended as medical diagnoses or measurements by medical devices.
【Gender Registration】
・Added a "Gender" step after setting a nickname during initial setup (Male / Female / Prefer not to say).
・Existing users who haven't set their gender can confirm it when opening the record category list.
・You can change this later in "Settings → Gender".
【Home】
・Displayed "Trivia" from Onaka-kun at the top of the Home screen.
・Tap the speech bubble to switch to another trivia tip.
*This is general reference information and does not replace medical diagnosis or treatment.
【Record Category Selection Screen】
・Updated the category list opened from "Log" in the center with an illustrated layout.
・You can now directly access "Batch Entry" from the list.
【Other Updates】
・Fixed an issue where editing a meal record could unexpectedly change its timestamp.
・Subscription notices and shared download links now match the user’s device.
・Fixed an issue where changes were not saved as intended after editing menstrual cramp records.
・Other minor improvements and bug fixes.
Please share your feedback or report any issues via the Support page in the Useful Resources section.
2.1.4 Oct 15
What's New in Version 2.1.3
【Belly Type Diagnosis】(Formerly "Belly Awareness Sheet")
・Redesigned the screen layout and streamlined the first-time setup flow.
・You can now view detailed results on our official website, along with easy-to-share text for social media.
・After re-entering data from the Analysis screen, you will now return directly to the Analysis tab.
【Nickname】
・New users will now be guided to register a nickname before proceeding to the Belly Type Diagnosis.
・Your nickname will now appear in Home screen greetings and Settings.
・Existing users without a registered nickname will be prompted to set one after saving an entry.
【Helpful Tips】
・Split the screen into two sections: "Helpful Tips" and "Recommended."
・Official blog articles can now be read directly within the app under "Recommended."
・Added a shortcut on the Home screen to jump straight to "Recommended."
【Other Updates】
・Improved overall readability and layout across the Home and Analysis screens.
For feedback or bug reports, please reach out via the Support page in the Helpful Tips section.
2.1.3 Sep 30
・Fixed issues that occurred during app startup and data migration from older versions.
・Fixed a bug where medication logs were lost when saving reflections.
・Added a 'Reflections' button to the home screen for direct entry.
・Enhanced diagnostic features when issues occur.
2.1.2 Sep 23
**[Update Details]**
* You can now view app announcements from the top-right corner of the Home, Calendar, Analytics, and Resources screens.
* Streamlined the top section of the Analytics screen so you can access "In-Depth AI Analysis" directly within the tab.
* AI analysis logged days now update immediately after saving an entry.
* Fixed the "Batch Entry" save button to the bottom of the screen for easier tapping.
* Other minor improvements and bug fixes.
2.1.1 Sep 17
[Clearer Home Screen]
・Consolidated 6 tracking buttons directly onto the Home screen.
・Quickly log Meals, Bowel Movements, Sleep, Water Intake, Stress, and Gut Symptoms right from Home.
・Completed items are marked as "Logged" so you can check today's status at a glance.
・After your first log of the day, you will receive a brief insight based on your recent records (for reference/trend awareness).
・"Batch Entry" now automatically imports your existing entries for the day.
・Easily add extra details later without starting from scratch.
[Easier Review & Insights]
・Reorganized the bottom menu: Home / Calendar / Log / Analysis / Resources.
・Clarified roles: use Calendar to check past logs, and Analysis to spot trends.
・Split Analysis into "Today's Analysis" and "AI Deep Dive."
・Check your usual trends in "Today's Analysis," and explore AI-powered reviews in "AI Deep Dive."
[Other Updates]
・Accessible the FODMAP Guide directly from Resources.
・Improved display layout and usability when using larger text sizes.
・Various minor improvements and bug fixes.
2.1.0 Sep 9
- Redesigned the "AI Review" screen for better readability — added your remaining usage count and guidance from the mascot
- Improved the AI Review card in the Analysis tab so you can see its current status at a glance (such as how many more days of records you need to get started)
- Other bug fixes and usability improvements
If you have feedback or run into any issues, please reach out via our support page.
2.0.1 Sep 3
Onaka Log has been updated to Version 2.0!
We completely rebuilt the app from the ground up with a fresh new design and smoother user experience. Your existing data will automatically transfer the first time you launch the updated app.
[No More Ads]
- Completely removed all ads when saving logs. Enjoy fast, uninterrupted saving.
- Daily tracking remains 100% free and ad-free.
[User-Requested Improvements]
- Multiple Stool Types: Record mixed stool consistencies alongside your primary stool type in a single entry.
- Meds & Gut Correlation: Added a dedicated tool to compare abdominal pain and stool changes before and after taking medication.
- Past Log Search: Search your history by keyword, date range, or category (Bowel, Meals, Gut, Condition, Water/Meds, Diary).
- Real-Time Hydration: Log drinks as you go with automatic daily total calculation.
[New Features]
- AI Analysis (Beta): Generates gentle summaries and trends based on your last 30 days of data.
- Account Registration & Login: Create an account using your email. Daily logging is still available without creating an account.
[Other Updates]
- Delete all records for a specific day directly from the batch entry screen.
- Expanded FODMAP guide descriptions.
- Minor performance improvements and bug fixes.
2.0.0 Aug 31
【Your feedback, reflected】
・Added "Didn't eat" and "Same as yesterday" options to meal logs
Skipped meals can now be recorded too, making the analysis of meals and symptoms more accurate
Choose "Same as yesterday" to log the previous day's meal in one tap
・Breakfast, lunch, and dinner are now each kept as a single entry
If you log the same mealtime again, you'll be asked to confirm before overwriting (you can also save it as a separate entry)
【Other updates】
・"No bowel movement today" can now be selected from the edit screen as well
・"Didn't eat" and "Same as yesterday" are also available in batch entry
・Old photos are now cleaned up when you rewrite a meal log
・Plus minor improvements and bug fixes
1.2.2 Jul 18
We've Updated Based on Your Feedback
・Improved Diet & Symptom Analysis
By comparing days you ate a food versus days you didn't, the app now prevents frequently eaten foods from being incorrectly flagged as triggers. Frequently consumed items are now neatly categorized under "Frequent Foods."
・"No Bowel Movement Today" Tracking
You can now explicitly log days with no bowel movements, making it easy to distinguish between a missed log and an actual no-symptom day.
Other Updates
・Daily Notes: Past notes can now be edited or deleted directly from the Analysis tab timeline.
・Analysis Accuracy: The "Accuracy" indicator has been updated to match the new comparison method.
・Minor improvements and bug fixes.
1.2.1 Jul 14
Analysis tab redesigned!
View insights from your records in detail from summary cards
New analysis: meals & pain, bowel patterns, pain trends, and lifestyle connections
Track pain, stress, and bowel movements over time in record charts
Preview upcoming analyses even when you have fewer days of records
Streak messages on Home are now part of the greeting card
Edit medication entries on the timeline
Other
Improved Home checklist display
Bug fixes and usability improvements
1.2.0 Jul 7
What's new in v1.1.1:
- Medications now shown on the timeline (with edit and delete)
- Bulk recording condition tab aligned with normal recording
- Fixed photo selection crash (Android)
- Improved timeline time display
- Improved home checklist UI
- Bug fixes and usability improvements
Send feedback via the support page.
1.1.1 Jul 2
What's New
- Fixed a bug where health input defaulted to stomach condition
- Redesigned home screen for quicker logging
More Updates
- Record photos: Attach photos to bowel and meal logs (Plus subscribers)
- Detailed analysis: Compare symptom patterns between days with and without specific foods
- Doctor visit support: Summarize 30 days of records to share with your doctor
- Other minor improvements and bug fixes
1.1.0 Jun 30
Bug Fixes: Minor improvements and bug fixes.
1.0.9 Jun 11
# What's New
【What’s New】
Meal Logging: You can now switch between "Quick Log" and "Select from Dictionary" (available for both regular and bulk entries). You can also reorder and edit the "Quick Log" buttons from the Settings.
Symptom Logging: Create custom tracked items for non-abdominal symptoms, such as headaches or menstrual pain.
【Improved Logging & Analysis】
Tip Bubbles: Added helpful tips from our mascot on the log screen (taps or changes automatically after a set time).
Trends & Insights: Added a "Trends from Your Logs" section to the Analysis tab, showing insights based on time of day, sleep, stress, and more.
Streamlined UI: Separated logs into "Gut" and "Symptoms." You can now toggle specific items on/off to display only what you want to track.
【Other Updates】
Data Transfer: You can now export your encrypted logs from Settings and import them into another device.
Log Reminders:
Notifications are now automatically skipped for time slots you have already logged.
Reminder messages now change daily.
A reminder setup prompt will appear after saving a log (can be turned off if not needed).
Startup Troubleshooting: Added a recovery screen that allows you to retry or contact support easily if the app fails to open.
Bug Fixes: Minor improvements and bug fixes.
1.0.8 Jun 9
- Redesigned the app icon.
- Reorganized the layout of the "Record" screen, making it easier to switch between the Meal, Tummy, and Hydration tabs.
- Hydration can now be logged in "ml", and batch registration and home screen displays have been unified.
- Standardized the recording of "Tummy" pain to the same 5-level scale used on the home screen.
- Reviewed the UI for the Home, Analysis, and Dictionary screens to make them easier to read and operate.
- You can now register medications.
- Other minor improvements and bug fixes.
1.0.7 May 27
• Before saving a log, you can choose Onaka Log Plus (save without ads) or watch an ad to save for free
• Removed the automatic ad shown immediately after saving
• Minor fixes and stability improvements
1.0.6 May 20
- Added personalization settings.
- The monthly calendar UI in the "Records" section of the analysis tab has been revamped, allowing you to review your health for the month at a glance with a mascot.
Other minor improvements and bug fixes have also been implemented.
1.0.5 May 18
Minor bug fixes
1.0.4 May 14
- Added "Gut Awareness Sheet" (Self-check your trends across three categories: symptoms, situations, and meals).
- Added "Batch Registration" (Input a full day's meals, bowel movements, condition, hydration, and diary notes all at once).
- Improved the display of the diary cards.
- Other minor bug fixes and improvements.
1.0.3 May 13
First release.
- 10-second logging for bowel, meals, and body condition
- FODMAP dictionary tuned for Japanese foods
- Correlation hints for meal x symptom and stress x symptom
- Behavioral experiment notebook
- SOS breathing guide (4-4-4-4)
- One-week PDF summary for clinic visits
1.0.2 May 12
• Added an autogenic training audio guide
• Added in-app update notifications for important releases
• Small bug fixes and copy refinements
1.0.1 Apr 25
Main updates in version 2.2.1:
【Home and Records】
・Choose which recording items to show on Home.
・Preview entry forms in Customize and add water, sleep, medication, and symptoms to Home.
・You can now change record times manually.
・Improved the Save and Delete controls and the layout when using larger text.
【Symptoms and Daily Review】
・Record nausea, belching, gas, and other symptoms on their own screens.
・Use numbered buttons to select the level of standard symptoms and optionally add context.
・Daily Review brings together five optional feeling ratings and a diary. Existing stress records remain available to view and edit in Calendar.
【Feedback and Requests】
・Added a tab in Announcements where you can read feedback, requests, and responses from the team.
This update also includes minor improvements and bug fixes.
Please share feedback or report issues via the Support page in Useful Resources.
more Version 2.2.1 2d ago
Data Linked to You The following data may be collected and linked to your identity:
Health & Fitness Contact Info User Content Identifiers Data Not Linked to You The following data may be collected but it is not linked to your identity:
Identifiers Usage Data Diagnostics