Comparison

Onaka Log vs Symptom Tracker

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Onaka Log

This app helps individuals manage IBS and daily stomach discomfort by logging meals, bowel movements, and symptoms. It offers a FODMAP dictionary for Japanese ingredients and tools to review patterns and share data with doctors. Includes breathing exercises for immediate relief.

Highlights
  • 10-second logging of bowel movements, meals, and symptoms
  • Bristol Stool Scale integration
  • FODMAP dictionary for Japanese ingredients
  • Trend review and PDF report generation
  • Behavioral experiment tracking
  • SOS breathing exercises
Features
Read full description

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] β–  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). β–  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. β–  FODMAP Guide - Japan-focused food database (natto, miso, udon, etc.). - Easily spot low-FODMAP options to remove meal guesswork. β–  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. β–  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. β–  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/

About

Symptom Tracker

Features
Read full description

SymptomDiary is a symptom tracking journal for people living with migraine, IBS, eczema, joint pain, fatigue and other conditions that come and go. You record how bad a symptom is and what may have set it off, and the app turns months of entries into a clear summary you can read to your clinician. Appointments are short. You get ten minutes to describe six weeks you can barely remember, and the question you can never answer is how often, how bad, and what was going on beforehand. Sleep, stress, weather, a particular food - you suspect something, but a suspicion is not a record. And the paper notebook stops getting filled in, because mid-flare, writing a paragraph is the last thing you can do. WHAT YOU CAN DO Log a symptom in seconds - just tap how bad it is Tag triggers: sleep, stress, weather, food, alcohol, exercise, hormones Note what you tried - a medication, an ice pack, rest Attach a photo of a rash or swelling Watch 14 days of severity build into a chart, with flares picked out Read a plain-language summary to say aloud or paste into a portal Take a PDF report to the appointment, or export a spreadsheet Build your own symptom types, or start from a common one Turn on one gentle daily reminder, and log from the widget or Siri Read recent sleep from Apple Health, if you allow it WHO IT'S FOR Your neurologist keeps asking how many migraine days a month You are working out which foods set off your IBS Your eczema flares and you want a photo record of it Chronic joint pain or fatigue, and appointments start from nothing You began a treatment and want to see if the bad days got fewer HOW IT WORKS 1. Create a symptom type - Migraine, IBS flare, Joint pain. 2. When it happens, tap how bad it is and tag what you noticed. 3. Trends, triggers and flares build themselves as entries add up. 4. Before the appointment, generate the summary and take it. QUESTIONS PEOPLE ASK Will this tell me what is wrong with me? No. SymptomDiary is for tracking your symptoms, not for diagnosis. It shows what you logged and what tends to appear alongside it, and labels a correlation as a correlation, never a cause. Always consult a qualified clinician. Do I need an account? No. There is no sign-up and no server holding your health log. Does it need Apple Intelligence? No. Where the built-in AI is available it writes your summary in plain sentences. Where it is not, the app computes one instead, and the charts and exports work the same. Can I give this to my doctor? Yes. A summary, your trends, your most-noted triggers and the full entry log, as a report you can print or send. What does it read from Apple Health? Recent sleep, and only if you turn it on. Read-only and optional. Can I track more than one condition? Every symptom type is free and unlimited. PRIVACY Your health log stays on your device. There is no account and nothing is uploaded; photos are saved with the entry. The Apple Health connection is optional, read-only and limited to recent sleep. Without Pro the app shows ads, personalized only if you allow tracking; logging is never behind an ad or a purchase. PRO Logging, the 14-day severity chart, trigger tagging and the spreadsheet export are included at no cost. Pro unlocks the clinician summary, the branded PDF report, the 12-week rollup with a day-of-week and time-of-day heatmap, the before-and-after comparison for a treatment you logged, and your full flare history. It is sold as a lifetime unlock or a subscription and removes ads. SymptomDiary is for tracking your symptoms, not for diagnosis. Always consult a qualified clinician about your health. Privacy Policy: https://dreamsgenius.com/apps/symptomdiary/privacy Support: https://dreamsgenius.com/apps/symptomdiary/support https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Onaka Log4 screens
Symptom Tracker4 screens

Verdict

The call

The clearest difference is ads: Onaka Log at none against Symptom Tracker's shown. Onaka Log also leads on iOS requirement (17.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Onaka Log sells 1 in-app purchase, starting at $2.99 per month and Symptom Tracker sells 6 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences Β· 6 level
Onaka Log versus Symptom Tracker: the parameters behind the verdict, then further details
ParameterOnaka LogSymptom Tracker
PriceFreeFree
Positive reviews50.0% of reviewsβ€”
Update frequencyWeeklyβ€”
AdsNo β€” betterYes
In-app purchasesYesYes
MonetizationFreemiumβ€”
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 β€” better26.0
Further details β€” not scored
Size90 MB10 MB
Age rating12+12+
DeveloperElectoria.IncAshok Kumar

In-app purchases

1 purchases

Onaka Log

Subscriptions1
  • おγͺかログ Plus7 Days trial$2.991 Month
6 purchases

Symptom Tracker

Subscriptions5
  • SymptomDiary Pro Weekly$4.997 Days
  • SymptomDiary Pro Monthly3 Days trial$7.991 Month
  • SymptomDiary Pro Yearly Saver$14.991 Year
Show 2 more
  • SymptomDiary Pro Yearly Fair$19.991 Year
  • SymptomDiary Pro Annual$39.991 Year
One-time1
  • SymptomDiary Pro Lifetime$99.99

Questions

Is Onaka Log free?
Onaka Log is free to download, with in-app purchases available.
Is Symptom Tracker free?
Symptom Tracker is free to download, with in-app purchases available.
Do Onaka Log or Symptom Tracker have ads?
Symptom Tracker shows ads; Onaka Log does not.

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