AcidLog vs Runny day
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AcidLog
This app helps you identify personal acid reflux triggers by logging meals and symptoms. It uses an on-device engine to correlate foods with your reported discomfort, providing a ranked list of likely culprits. Focus on what bothers you, not generic avoidance lists.
- Log meals and rate symptoms
- On-device correlation engine
- Personalized trigger list
- Offline logging capability
- Doctor-ready PDF reports
- No advertisements
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Most acid reflux advice hands you a list of 40 foods to avoid. AcidLog does the opposite: it finds the 3 or 4 that actually bother YOU — so you can stop fearing the rest. Log a meal and how you felt in about 30 seconds. AcidLog's correlation engine compares each food with your other meals and names it as a likely trigger only when your symptoms keep following it — often within about two weeks for foods you eat regularly. Your personal trigger list is ranked by confidence. WHY A GENERIC "AVOID THESE FOODS" LIST FAILS Coffee wrecks one person and does nothing to the next. Reflux is personal. Instead of eliminating everything, AcidLog watches your own meals and symptoms and surfaces the patterns that are actually yours. HOW IT WORKS 1. Log — add a meal and rate symptoms (heartburn, regurgitation, throat, cough, bloating) in seconds. 2. Correlate — the on-device engine links foods to the symptoms that followed. 3. Discover — once a food keeps coming before your symptoms, it joins your ranked list of likely triggers, with a confidence score for each. Trigger foods you eat often usually show up within about two weeks; occasional ones take longer. WHAT'S FREE The full 14-day trigger discovery is free: log meals and symptoms and see your first correlations and trigger list. No trial paywall in front of the core. ACIDLOG PRO (monthly or annual subscription) - Your whole diary analysed, not just the last 14 days - Your full history stays viewable - Doctor-ready PDF report to bring to your gastroenterologist - Trends across weeks and months BUILT FOR REAL LIFE - Offline logging — entries save straight to your phone; with a free account they are backed up and sync when you're back online - No ads. Ever. - Fast enough to log at the table, not an hour later - Works for GERD, silent reflux / LPR, and post-meal indigestion MADE FOR - Adults with GERD or silent reflux (LPR), including long-term PPI users who want their own triggers, not another handout - Anyone newly diagnosed and told to "keep a food diary" - Caregivers who cook and want to know which meals set off symptoms AN HONEST NOTE AcidLog is a diary and correlation tool, not a medical device. It does not diagnose, treat, or cure any condition, and it isn't a substitute for your doctor. Its job is to hand you and your clinician better data. Find your triggers, keep your food. Start free.
Runny day
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Runny day is a calm, private diary for tracking allergy-like symptoms and the context around them. Log symptoms, meals, medications, outdoor exposure, and everyday observations in one timeline. Add local pollen, air quality, and humidity when you choose to use location or select a city. As you build a record, Runny day highlights possible recurring patterns based on your own entries. It explains what was observed and keeps uncertainty clear — it does not diagnose allergies, identify causes, or replace medical advice. Use reports to bring a concise history to a healthcare conversation. Features: • Symptom, food, medication, and exposure logging • Optional pollen, air-quality, and humidity context • Explainable observation-based pattern insights • Custom date ranges and doctor-friendly summaries with Premium • Local-first data storage and privacy controls Runny day is for personal observation, not diagnosis or treatment. Seek qualified medical guidance for medical questions or urgent symptoms. Premium is available as a weekly or yearly auto-renewing subscription, or as a one-time lifetime purchase. Prices are shown in the app before you buy. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed in App Store settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://runnyday-allergy.pages.dev/privacy/
Screenshots
Verdict
The clearest difference is update cadence: Runny day at every 5 days against AcidLog's every 3 weeks. AcidLog's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. AcidLog sells 2 in-app purchases, starting at $4.99 per month and Runny day sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
AcidLog ships an update every 3 weeks, Runny day every 5 days. Both last shipped on October 31, 2026.
| Parameter | AcidLog | Runny day |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 45 MB | 23 MB |
| Age rating | 4+ | 12+ |
| Developer | DJUMP, MB | Ivan Dotsenko |
In-app purchases
AcidLog
- Premium Monthly$4.991 Month
- Premium Annual7 Days trial$39.991 Year
Runny day
- Premium Weekly$2.997 Days
- Premium Lifetime$59.99









