Comparison

Winnow vs AcidLog

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

Head to head
About

Winnow

Features
Read full description

Winnow helps you separate helpful thoughts from harmful ones using Cognitive Behavioral Therapy (CBT) techniques โ€” right from your phone. GUIDED THOUGHT RECORDS Walk through a structured 7-step CBT thought record whenever anxious or negative thoughts arise. Identify the situation, capture your emotions, examine automatic thoughts, spot cognitive distortions, and reframe your thinking with balanced alternatives. QUICK MOOD CHECK-INS Log how you're feeling in seconds. Choose from 27 emotions, rate their intensity, and build a picture of your emotional patterns over time. JOURNAL & REFLECT Review all your entries in one place. Filter by drafts, completed records, or recent entries. Revisit past situations to see how your thinking has evolved. INSIGHTS & TRENDS Track your mood trends over weeks, months, or the full year. See your most frequent emotions, identify recurring cognitive distortions, and understand your patterns with clear charts and summaries. SAFETY PLAN Create a personalized crisis safety plan with coping strategies, trusted contacts, and professional resources โ€” always accessible when you need it most. PRIVATE & SECURE All your data stays on your device. No account required. No cloud sync. Your thoughts are yours alone. WINNOW PRO Upgrade for unlimited data exports to share with your therapist, full trend analysis across all time periods, AI-powered distortion detection, advanced distortion breakdowns, and more. Whether you're working with a therapist or managing your mental health independently, Winnow gives you a structured, private space to practice CBT every day. SUBSCRIPTION INFORMATION Winnow Pro Monthly โ€” $4.99/month Winnow Pro Annual โ€” $39.99/year Payment will be charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Manage or cancel your subscription in your App Store account settings at any time. Privacy Policy: https://psyfitechnologies.com/winnow/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

AcidLog

Features
Read full description

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 โ€” so you can stop fearing the rest. Log a meal and how you felt in about 30 seconds. AcidLog's correlation engine connects what you ate to your symptoms and, within 14 days, gives you a personal trigger list 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 โ€” add a meal and rate symptoms (heartburn, regurgitation, throat, cough, bloating) in seconds. 2. Correlate โ€” the on-device engine links foods to the symptoms that followed. 3. Discover โ€” by day 14 you get a ranked list of your likely triggers, with a confidence score for each. 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) - Unlimited history and correlation beyond day 14 - Doctor-ready PDF report to bring to your gastroenterologist - Trend stats over weeks and months - Ongoing trigger refinement as your diet changes BUILT FOR REAL LIFE - Offline logging โ€” entries queue on your phone 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.

Screenshots

Winnow4 screens
AcidLog4 screens

Verdict

The call

Winnow and AcidLog are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Winnow sells 2 in-app purchases, starting at $4.99 per month and AcidLog sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Winnow ships an update monthly, AcidLog every 3 weeks. The most recent releases landed on October 2, 2026 and September 26, 2026 respectively.

ScorecardNo meaningful differences
Winnow versus AcidLog: the parameters behind the verdict, then further details
ParameterWinnowAcidLog
PriceFreeFree
Update frequencyMonthlyEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details โ€” not scored
Size48 MB45 MB
Age rating4+4+
DeveloperPsyFi TechnologiesDJUMP, MB

In-app purchases

2 purchases

Winnow

Subscriptions2
  • Winnow Pro Monthly$4.991 Month
  • Winnow Pro Annual$39.991 Year
2 purchases

AcidLog

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Annual$39.991 Year

Questions

Is Winnow free?
Winnow is free to download, with in-app purchases available.
Is AcidLog free?
AcidLog is free to download, with in-app purchases available.
Do Winnow or AcidLog have ads?
Neither Winnow nor AcidLog shows ads.
Which is updated more often, Winnow or AcidLog?
Winnow ships an update monthly, and AcidLog every 3 weeks. Most recently, Winnow was updated on October 2, 2026 and AcidLog on September 26, 2026.

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