# Tether - Sensitivity Tracker — Track Triggers & Symptoms

> Track Triggers & Symptoms (iPhone/iPad app by Zachary Lyons.)

- Source: https://appshunter.io/ios/app/tether-sensitivity-tracker/id6759925709 (this page in markdown: same URL + `.md`)
- Developer: [Zachary Lyons](https://appshunter.io/developer/1802738531)
- Category: Health & Fitness, Medical
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.1 · 39 MB
- Languages: English
- Released: 2026-03-16
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/tether-sensitivity-tracker/id6759925709/reviews.md

## What is Tether?

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/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Tether Premium | $4.99 | per month |
| Tether Premium | $39.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Tether Premium | $79.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-05-06

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.

### 1.0 — 2026-03-16

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*