Comparison

Know Your Lemons vs plop

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

Head to head
About

Know Your Lemons

This app empowers users to take control of their breast health. It offers personalized risk assessment, monthly self-exam reminders, and educational tools to understand symptoms and prepare for screenings. Track your cycle and learn how to perform self-exams with confidence.

Highlights
  • Monthly self-exam reminders
  • Personalized risk calculation
  • Screening plan creation
  • Audio self-exam guides
  • Menstrual cycle tracking
  • Learn 12 breast cancer symptoms
Features
Read full description

Calculate your risk, get monthly self-exam reminders, create a screening plan. Winner: Best Health & Fitness App by the Webby Awards. What you’ll get: • Monthly self-exam reminders • Earn badges for self-exams & quizzes • Audio guides (Mona Lisa & Napoleon) to teach self-exam with confidence • Calculate your personal risk • Make a screening plan tailored to you • Learn the 12 symptoms and prepare for mammograms • Tools to talk with your doctor • Track your menstrual cycle to know the best time for self-exam Your privacy matters. As a charity, privacy and security is important to us. Your data remains protected in your account and is not shared with third parties.

About

plop

This app helps you understand your digestive health by tracking stool patterns, symptoms, and lifestyle factors. It automatically identifies unusual changes and connections, providing actionable insights to manage gut conditions like IBS and IBD.

Highlights
  • Log stool shape, frequency, and consistency
  • Track symptoms like pain and bloating
  • Monitor medications, foods, sleep, and mood
  • Automatic pattern and connection identification
  • Long-term trend analysis
  • Shareable PDF/CSV reports
  • Secure and private data storage
Features
Read full description

【Stop Guessing Your Gut. Discover the Real Triggers Behind Your Symptoms】 Plop is an intelligent gut health log and stool tracker powered by a privacy-first Machine Learning (ML) Engine. Log your bowel movements, abdominal pain, meals, and stress levels in seconds. Plop automatically cross-analyzes your entries to identify hidden symptom triggers, detect flare-up patterns, and bring clarity to your digestive health. --- ■ Tired of Unpredictable Digestive Issues? • Unsure which foods or habits are causing bloating, gas, or abdominal pain? • Living with IBS, IBD, Crohn’s, or Colitis and constantly anxious about sudden flare-ups? • Struggling to explain months of symptom history to your gastroenterologist? Plop was built specifically to help you take back control of your gut health with data-driven insights rather than guesswork. --- ■ Core Features of Plop 【1】 Custom Stool & Symptom Diary • Track stool consistency, shape, and frequency using the official Bristol Stool Scale • Log key symptoms: pain intensity, bloating, urgency, nausea, and discomfort • 100% Customizable Tracking [Premium]: Create your own custom factors (meals, medications, supplements, sleep, stress) tailored to your exact medical condition 【2】 Automatic Machine Learning (ML) Pattern Detection • Pinpoint symptom triggers (foods, habits, stress, medication) automatically • Identify early warning signs and subtle pattern shifts before a major flare-up occurs • Visualize long-term trends and lifestyle impacts with clean, interactive charts 【3】 Doctor-Ready Clinical Reports (PDF / CSV) • Export comprehensive summary reports showing trends, correlations, and history • Walk into your gastroenterologist appointments prepared with objective data 【4】 Privacy-First & Local Storage • Your personal health data stays securely stored locally on your device (On-Device First) • Designed with absolute privacy in mind so your sensitive health logs remain yours --- ■ Who Plop Is Built For: • IBS (Irritable Bowel Syndrome), IBD, Crohn’s Disease, Ulcerative Colitis • Chronic constipation, unpredictable diarrhea, or recurring bloating • Individuals following a Low-FODMAP diet or working with a GI specialist • Caregivers logging digestive symptoms for a family member Download Plop today and start understanding your gut with clear, actionable insights! Disclaimer: Plop is not intended to self-diagnose, self-treat, self-alleviate or to exclusively compensate for any disease or disability. If you have any concern, please consult with your doctor, or other qualified healthcare professional before using this App. However, you are welcome to use this app, for self-tracking, or as a reference to support your visit to a doctor or other qualified healthcare professional. This App (Plop) has not been certified as a medical device by the FDA (USA). Use this App at your own risk. The creators don't take any responsibility for direct or indirect damage that could result from its use. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms & Privacy: https://plopdiary.com/en/privacy.html #PoopTracker #PoopMaps #poop #plop #Boweltracker #Bowelmovement #IBS #Colitis #IBD

Screenshots

Know Your Lemons4 screens
plop4 screens

Verdict

The call

The clearest difference is in-app purchases: Know Your Lemons at none against plop's 9. Know Your Lemons also leads on review sentiment (77% vs 62%). plop's advantage is ratings volume (1.5K vs 122). On price, rating, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. plop sells 9 in-app purchases, starting at $2.99 per month. Know Your Lemons asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Know Your Lemons against 4.7 for plop. That said, the two scores are not equally well evidenced: plop has 1.5K ratings behind it against 122, so its average is the more settled of the two. Written reviews are what separate them: 77% of Know Your Lemons's written reviews are positive against 62% of plop's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 6 level
Know Your Lemons versus plop: the parameters behind the verdict, then further details
ParameterKnow Your Lemonsplop
PriceFreeFree
Rating4.8 (122 ratings) — better4.7 (1.5K ratings)
Positive reviews77.1% of reviews — better62.4% of reviews
Number of ratings1221.5K — better
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size157 MB89 MB
Age rating4+4+
DeveloperKnow Your Lemons Foundation Inc.Robin Chang

Customer experience

Know Your Lemons

All ratings122 ratings
Positive95.1%
Neutral2.5%
Negative2.5%
Written reviews48 reviews
Positive77.1%
Neutral4.2%
Negative18.8%

plop

All ratings1,480 ratings
Positive91.8%
Neutral3.6%
Negative4.7%
Written reviews125 reviews
Positive62.4%
Neutral12.0%
Negative25.6%

User reviews

Know Your Lemons

From 122 App Store ratings

What we love

  • 👍 Easy to use and navigate
  • 💡 Informative and educational content
  • 🚀 Helpful reminders for self-exams
  • 🎨 Beautiful and engaging design
  • ✅ Clear explanations of symptoms

Room to improve

  • 🐛 Reminder notifications often inaccurate
  • 🐛 Risk assessment quiz bugs/restarts
  • 🐛 Data loss issues
  • 🐛 Login problems/inability to re-enter
  • 🐛 Outdated recurrence statistics

plop

From 1.5K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Helpful for tracking gut health
  • 💡 Useful for sharing data with doctors
  • 👍 Customizable factors and tracking
  • 👍 Simple and intuitive interface

Room to improve

  • 🔒 Subscription model too expensive
  • 🐛 Sync issues between devices
  • 🐛 Data loss after updates
  • 🔒 Limited free version functionality
  • 🐛 Bugs and glitches

Bugs and requests

Know Your Lemons

Reported bugs

9 issues
  • Reminder notifications are consistently wrong (early or not sent)
  • Risk assessment quiz restarts mid-quiz
  • User data disappears after a period
  • Unable to log back into the app after initial use
  • Age selection in screening quiz is limited and buggy
Show 4 more
  • Main screen content overlaps on some devices
  • Incorrect website URL mentioned in video
  • Notifications not received
  • Login screen pop-up doesn't appear

Requested features

9 requests
  • Adjustable reminder timings for varying cycle lengths
  • Reminders to stay on Lock Screen/icon badge
  • More inclusive language for transgender individuals
  • Inclusion of UK/global location data
  • Update recurrence statistics with current data
Show 4 more
  • More detailed risk assessment considering subtype and stage
  • Fix for risk assessment quiz restarting
  • Fix for data disappearing
  • Fix for login issues and re-entry problems

plop

Reported bugs

4 issues
  • Incorrect time chart display
  • Erasing of historical data
  • Inability to edit past entries
  • Unreliable data backup and restore

Requested features

5 requests
  • Apple Watch integration
  • Ability to add past entries
  • More color options for plop types
  • Ability to track additional symptoms
  • Sharing and social features

In-app purchases

None

Know Your Lemons

No in-app purchases

9 purchases

plop

Subscriptions9
  • Monthly Subscription$2.991 Month
  • Monthly Subscription$3.991 Month
  • Monthly subscription$4.991 Month
Show 6 more
  • Best Deal$12.996 Months
  • Best Deal$14.996 Months
  • 6 months subscription$19.996 Months
  • Annual Subscription7 Days trial$29.991 Year
  • Annual Plan7 Days trial$29.991 Year
  • Yearly Subscription7 Days trial$34.991 Year

Questions

Is Know Your Lemons free?
Know Your Lemons is free to download, with no in-app purchases.
Is plop free?
plop is free to download, with in-app purchases available.
Which has better reviews, Know Your Lemons or plop?
Know Your Lemons is rated higher. Know Your Lemons averages 4.8 out of 5 from 122 ratings, while plop averages 4.7 from 1.5K ratings.
Do Know Your Lemons or plop have ads?
Neither Know Your Lemons nor plop shows ads.
Which is updated more often, Know Your Lemons or plop?
Know Your Lemons ships an update monthly, and plop monthly. Most recently, Know Your Lemons was updated on September 21, 2026 and plop on September 24, 2026.

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