Substrata
Total Health Data Analysis
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Track how noise, pressure, and temperature affect your sleep, mood, and health. On-device AI explains the patterns. No servers, no accounts — data stays on your phone.
Substrata connects your environment — noise, pressure, temperature, humidity, and ambient sound — with your sleep, heart rate, and mood data to surface personalized, on-device insights about what's affecting your wellbeing.
SEE WHAT YOUR ENVIRONMENT IS DOING TO YOUR HEALTH
Track ambient noise from Apple Watch, barometric pressure, temperature, humidity, UV index, and wind speed alongside sleep quality, heart rate, HRV, and more. Everything in one dashboard, updated automatically.
TRACK YOUR MOOD & ENERGY
Log how you feel right from your dashboard. Over time, Substrata reveals connections between your environment and your mood — does barometric pressure correlate with low energy? Does nighttime noise affect how you feel the next day?
INTELLIGENT, ON-DEVICE INSIGHTS
On-device AI turns statistical patterns into clear, personalized explanations. No jargon, no guesswork — just plain-English summaries you can share with your doctor. All analysis runs privately on your iPhone using Apple Intelligence.
AMBIENT SOUND CLASSIFICATION
During spot-checks, Substrata classifies your sound environment — traffic, social, nature, music, industrial, or quiet — adding context that pure decibel readings miss. No audio is ever recorded or stored.
LOG SYMPTOMS IN ONE TAP
Track headaches (migraine, tension, cluster), allergies, respiratory issues, mood changes, joint pain, and more. One-tap quick log or detailed entry with severity and notes. Every symptom becomes a data point in the correlation engine.
CHARTS THAT TELL THE STORY
Hourly, daily, and weekly time-series charts for every variable. Color-coded threshold zones based on WHO, EPA, and ASHRAE guidelines show when conditions cross from safe to concerning. Change-point detection marks when your environment shifts.
YOUR DATA STAYS ON YOUR PHONE
No servers. No accounts. No analytics SDKs. Your health and environmental data never leaves your phone. All correlation analysis and AI insights run entirely on-device. Privacy isn't a feature — it's the foundation.
PREMIUM UNLOCKS THE FULL PICTURE
Free: full monitoring + 1 active correlation. Premium ($3.99 one-time): all insights, AI-powered narratives, PDF export for sharing with your doctor, and history beyond 30 days. No subscriptions.
Requires iPhone with iOS 26 or later. Apple Watch strongly recommended for environmental noise, heart rate, HRV, and advanced health signals. Works without a Watch using weather data, sleep duration, and headphone audio levels. AI insights require an Apple Intelligence-capable device.
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://sknauss7.github.io/KynossStudiosSupport/substrata-privacy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
Track your mood and energy right from the dashboard — discover how your environment affects how you feel over time.
On-device AI now explains your data patterns in plain English. Clear, personalized insight summaries you can share with your doctor.
Spot-checks now classify your sound environment — traffic, nature, social, music — adding context that decibel readings alone can't capture.
Updated app icon. Fixed an issue where free users could view all insights by dismiss-cycling.
The developer, Steven Knauss, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Steven Knauss
- Size
- 3.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.2 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Substrata Premium $3.99
- Copyright
- © 2026 Steven Knauss