Comparison

Poop Tracker vs Substrata

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

Head to head
About

Poop Tracker

Log bowel movements, track digestive symptoms, and gain insights into your gut health. Understand patterns, identify triggers, and improve your digestive wellness with personalized reports and analysis.

Highlights
  • Quick & Easy Logging
  • Symptom Tracking
  • Food Logging
  • Personalized Insights
  • Advanced Gut Patterns
  • Data Export
Features
Read full description

Plopper – Poop Tracker & Gut Health Take control of your gut health with Plopper — the smart poop tracker that helps you log bowel movements, understand patterns, track symptoms, and improve your digestive wellness with personalized insights. Curious about your gut health? Plopper is designed to help you better understand your body with quick logging, symptom tracking, Bristol Stool Chart analysis, and detailed health reports. How to Use Plopper Log your bowel movements in seconds with our intuitive tracker Track stool type, color, symptoms, and how you feel Connect meals to your digestive patterns with food logging Get personalized insights and see what affects your gut Plopper Features (Requires Subscription) Quick & Easy Logging One‑tap logging makes tracking effortless. Record stool consistency using the Bristol Stool Chart, note colors, symptoms, and urgency levels in seconds. Symptom Tracking Log bloating, pain, gas, nausea, and other symptoms to keep a complete health record. Reminders Set alerts to ensure you log consistently. Private & Secure Your data stays on your device — safe and private.Unlock the full power of your gut data with these premium tools: Advanced Gut Patterns Visualize bowel habits over time with beautiful analytics. See trends and identify irregular patterns week by week. Food Correlations Connect what you eat to how you feel. Identify triggers by correlating meals with bowel movements. Detailed Reports Access weekly and monthly health reports and trend overviews. Calendar Heatmap Visualize your gut health journey with an easy‑to‑read heatmap. Data Export Export your history in PDF/CSV format to share with your doctor or nutritionist. Why Choose Plopper? If you’re serious about understanding your digestive health, Plopper helps you identify triggers, spot patterns, and support your overall wellness journey with clarity and simplicity. Medical Disclaimer Important: Plopper is designed for personal health awareness and educational purposes only. It does not provide medical advice, diagnose, treat, or prevent any disease. The information provided should not be considered a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making any health‑related decisions. Subscription Options Plopper Unlimited (Monthly) Full access to all premium poop tracker features listed above, including advanced analytics, unlimited history, food correlations, and exportable reports. Plopper Unlimited (Yearly) Get the same full access with the best available value. Payment is charged to your iTunes Account at purchase confirmation. Subscription automatically renews unless auto‑renew is turned off at least 24 hours before the end of the current period. Auto‑renewal can be managed in your Account Settings. Legal Terms of Use: https://www.cramly.app/legals/plopper/terms Privacy Policy: https://www.cramly.app/legals/plopper/privacy

About

Substrata

This app analyzes environmental factors like weather and noise alongside your personal health data, such as sleep and heart rate, to identify potential triggers for headaches and other symptoms. It uses on-device intelligence to provide plain-English explanations and predictive alerts, helping you understand what affects your well-being.

Highlights
  • Sleep condition scoring
  • Headache and symptom logging
  • Personal trigger profile building
  • Predictive alert system
  • On-device AI correlation
  • HealthKit and Apple Watch integration
  • PDF and CSV export
Features
Read full description

Wake up tired without knowing why? Headaches that hit out of nowhere? Substrata watches the noise, weather, and air around you, then pairs it with your sleep, heart rate, and HRV — so you can see exactly what's affecting how you feel. The analysis runs entirely on your iPhone using Apple Intelligence. After about two weeks, the on-device correlation engine starts surfacing connections — barometric pressure drops that match your migraine days, bedroom noise that quietly steals your deep sleep, weather patterns that drag down your HRV. Plain-English explanations you could share with your doctor. YOUR SLEEP, EXPLAINED - Sleep Condition Score: how well your bedroom actually treated you (noise, temperature, humidity, pressure stability) - Pairs with HealthKit sleep data + Apple Watch wrist temperature - Hourly, daily, weekly charts with WHO/EPA threshold zones color-coded HEADACHE & SYMPTOM TRIGGERS - Tap to log a headache (migraine, tension, cluster) with severity and notes - After 20-30 logged events, your personal trigger profile starts building - Predictive alerts when conditions match your past headache patterns - Also tracks allergies, mood, joint pain, energy ON-DEVICE INTELLIGENCE - All correlation analysis runs on your iPhone - Weather comes from Apple WeatherKit, using your approximate location - No accounts. No third-party analytics SDKs. - Microphone is not used in production; noise data comes from Apple Watch - Privacy nutrition label: no data collected WHAT YOU GET WITH PREMIUM - Every correlation the engine finds (free tier shows your top one) - Personal headache trigger profile + predictive alerts - AI-generated insight narratives - PDF and CSV export — bring a real report to your doctor - History beyond 30 days Requires iPhone with iOS 26.2 or later and an Apple Intelligence-capable device for AI insights. Apple Watch strongly recommended for environmental noise, HRV, and sleep-stage data; works without a Watch using weather, sleep duration, and headphone audio. Substrata is not a medical device and does not provide medical advice. It explores potential connections between environmental and health data for personal review. Consult a healthcare provider for diagnosis or treatment. Privacy Policy: https://kynossstudios.com/substrata-privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Poop Tracker4 screens
Substrata4 screens

Verdict

The call

The clearest difference is ratings volume: Substrata at 4 against Poop Tracker's 1. Poop Tracker's advantage is iOS requirement (15.1 vs 26.2). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Poop Tracker sells 2 in-app purchases, starting at $9.99 per month and Substrata sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Poop Tracker against 5.0 for Substrata. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Scorecard2 real differences · 7 level
Poop Tracker versus Substrata: the parameters behind the verdict, then further details
ParameterPoop TrackerSubstrata
PriceFreeFree
Rating5.0 (1 ratings)5.0 (4 ratings)
Number of ratings14 — better
Update frequency—Every 4 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better26.2
Further details — not scored
Size63 MB7 MB
Age rating+124+
DeveloperMuhammad MukamaSteven Knauss

Customer experience

Poop Tracker

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Substrata

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Poop Tracker

Subscriptions2
  • Monthly Pro$9.991 Month
  • Yearly Pro$29.991 Year
4 purchases

Substrata

Subscriptions2
  • Substrata Premium Monthly7 Days trial$4.991 Month
  • Substrata Premium Annual7 Days trial$29.991 Year
One-time2
  • Substrata Premium$3.99
  • Substrata Premium Lifetime$89.99

Questions

Is Poop Tracker free?
Poop Tracker is free to download, with in-app purchases available.
Is Substrata free?
Substrata is free to download, with in-app purchases available.
Which has better reviews, Poop Tracker or Substrata?
Poop Tracker and Substrata are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.
Do Poop Tracker or Substrata have ads?
Neither Poop Tracker nor Substrata shows ads.

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