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  • Onaka Log screenshot 1
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About Onaka Log

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; custom symptom tracking. - 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/

What’s new

Version 2.1.4 · Updated October 15, 2026

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.

App privacy

The developer, Electoria.Inc, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Health & Fitness: Health
  • Contact Info: Email Address
  • User Content: Other User Content
  • Identifiers: User ID

Used for: App Functionality

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:

  • Identifiers: Device ID
  • Usage Data: Product Interaction
  • Diagnostics: Crash Data, Performance Data

Used for: Analytics, App Functionality

Alternatives to Onaka Log

Looking for apps like Onaka Log? Here are 6 similar apps on the App Store. The highest rated is Darmi IBS Food Symptom Tracker (4.8/5), and all 6 are free to download.

Onaka Log vs. alternatives
App Rating Price Last updated Compare
Onaka Log – Free October 15, 2026
FODMAP記録アプリ-食事と体調をかんたん記録 – Free Aug 10, 2026 Compare
Mykinso IBS:下痢・便秘対策 – Free Dec 12, 2024 Compare
Darmi IBS Food Symptom Tracker 4.8 / 5 (5) Free Sep 28, 2026 Compare
うんこログ - 排便・排尿記録 – Free Sep 19, 2026 Compare
Surutto: Bowel Movement Log – Free Sep 20, 2026 Compare
Gut Health & Poop Tracker – Free Jul 9, 2026 Compare

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