Tether - Sensitivity Tracker
Zachary Lyons Health & Fitness iPhoneiPadiPod touch
Tether - Sensitivity Tracker is a free Health & Fitness app for iPhone and iPad by Zachary Lyons. Requires iOS 15.1. Updated May 6, 2026.
- Price
- Free
- on the App Store
- Size
- 39 MB
- Age 17+
- Updated
- May 6
- 2026 · v1.0.1
Screenshots
About Tether - Sensitivity Tracker
Living with chronic sensitivities can feel overwhelming, but you do not have to navigate it alone. Tether is a personal health companion designed for anyone dealing with environmental triggers, food sensitivities, nervous system overload, or complex chronic symptoms. Track your experiences, identify patterns, and receive personalized AI-powered insights, all in one place. YOUR PERSONAL HEALTH JOURNAL Log symptoms, foods, supplements, exposures, events, and recovery activities in seconds. Tether’s smart journal helps connect the dots between what you eat, what you encounter, and how you feel. CORTEX, YOUR AI HEALTH COMPANION Ask Cortex anything about your health journey. Powered by advanced AI and grounded in your personal data, Cortex offers thoughtful, informed guidance tailored to your specific triggers, safe items, and sensitivity profile. It is like having a wise friend who understands biology and takes your symptoms seriously. FOOD SCANNER Snap a photo of any food label or ingredient list. Tether analyzes it against your personal trigger and safe item lists, flagging potential concerns and suggesting alternatives. HEALING PROTOCOL LIBRARY Access a curated library of evidence-informed protocols across three tiers: Immediate Relief, Maintenance Routines, and Deep Repair Strategies. From breathwork to vagal toning to gut support, find guided tools that meet you where you are. SENSITIVITY PROFILE Build a living map of your body’s responses. Track triggers, safe items, and items you are testing. Watch your profile evolve as you learn what works for your unique biology. SYSTEM CHECK Take a guided assessment to explore which body systems may be contributing to your symptoms, including immune balance, nervous system regulation, histamine pathways, and gut health. INSIGHTS AND PATTERNS Tether analyzes your journal entries to surface patterns you might otherwise miss. See connections between your symptoms, triggers, exposures, and daily habits over time. ALSO INCLUDED: • Daily streak tracking to build consistent logging habits • Supplement tracker • Save and bookmark healing protocols • Saved food scan results for quick reference • Optional daily affirmations • Dark mode • Secure cloud backup when signed in • Data export and full data control Tether is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
What’s new
Version 1.0.1 · Updated May 6, 2026
This update improves Tether’s Cortex AI experience, adds clearer AI privacy controls, refines saved scans and sensitivity profile flows, and includes visual polish, stability improvements, and bug fixes across the app.
App privacy
The developer, Zachary Lyons, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address, Name
- Identifiers: User ID
Used for: App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Health & Fitness: Health
- User Content: Photos or Videos, Other User Content
Used for: App Functionality
Alternatives to Tether - Sensitivity Tracker
Looking for apps like Tether - Sensitivity Tracker? Here are 6 similar apps on the App Store. The highest rated is Immunally: Autoimmune Tracker (5.0/5), and all 6 are free to download.
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MyVitalSync
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Nourish: Anti-Inflammatory
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Immunally: Autoimmune Tracker
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Symloom: Symptom Tracker
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Upswell Studio
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Sjogrens Tracker
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Tether - Sensitivity Tracker | – | Free | May 6, 2026 | |
| MyVitalSync | 4.9 / 5 (7) | Free | Oct 14, 2026 | Compare |
| Nourish: Anti-Inflammatory | – | Free | Sep 27, 2026 | Compare |
| Immunally: Autoimmune Tracker | 5.0 / 5 (3) | Free | Oct 14, 2026 | Compare |
| Symloom: Symptom Tracker | 5.0 / 5 (1) | Free | Oct 13, 2026 | Compare |
| Upswell Studio | 5.0 / 5 (2) | Free | Jun 1, 2026 | Compare |
| Sjogrens Tracker | 3.3 / 5 (3) | Free | Aug 5, 2026 | Compare |