Comparison

Everwell vs Tether

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

Head to head
About

Everwell

Features
Read full description

Meet the app that helps you get chronic symptoms under control. Headaches, gastro, IBS, skin conditions - track any chronic illness and see what correlates to your symptoms. Track anything you suspect as a trigger and see how it affects YOUR symptoms. The techniques used in this app are from headache, gastro and dermatology clinics. With this app you'll easily build an accurate log, have clear reports for your care team, and finally pinpoint your real triggers. We have more free features than most trackers. Beyond all the free features, our most-loved feature is the premium AI-based pattern finder. This pinpoints problem triggers in just a few short weeks. Purchase is required to access this feature. Clinical evidence shows that trigger finding works for reducing episodes [1]. Get started today! PINPOINT YOUR REAL TRIGGERS Finding triggers helps people reduce or eliminate symptoms. Track symptoms, medications, triggers, and more. We've helped thousands of people get better by finally finding their real triggers. CHRONIC PAIN TRACKING MODE For people living with chronic pain that doesn't easily track as 'episodes', we now have a pain level mode. This helps you record pain levels instead of episodes. And, if you decided to go premium and use our trigger finder algorithm, this still identifies correlations. We've worked hard to make this tracker work great for people who live with all types of disorders. HOW IT WORKS You track information about your symptoms and suspected triggers. Everwell combines this with data you're already collecting in other apps (e.g. sleep, weather, workouts). Then, powerful analysis helps you make better insights from your tracking. FEATURE HIGHLIGHTS This app has all the great tracking app features you'd expect. Plus, we help you work better with your care team and make real progress by seeing what correlates with your symptoms and episodes. Full-Featured Journal: ** Easiest. Tracking. Ever. (Get it just for this!) ** * Both doctors and patients love our journal. * Track anything you want. * Record symptoms in seconds. Come back later to fill in the details. Automated Tracking: * Weather and Barometer * Workouts * Steps * Sleep * Location (Do certain locations cause you to have more symptoms? Our users LOVE this feature.) Fully Custom Tracking: * We don't force you to track things you don't want to track. * Pattern Finder: Finally know your real symptom triggers. Your Records are There When You Need Them: * Clear records for your care team or at the ER. * Make better medication decisions with a clear log of past trials. Integrates with HealthKit. All apps that add data to your iPhone Health App will sync into this app (with your permission), including data collected in Fitbit and Apple Watch. This diary provides real insights to help you get better faster. Download and start tracking today for free. Terms and Conditions - https://everwellapp.com/tos/ Privacy Policy - https://everwellapp.com/privacy-statement/ Important: This app informs you of correlations. This is not medical advice. We do not diagnose illness. We do not give medical advice. No information provided in this app is medical advice. Please seek a doctor’s advice before making any medical decisions. Citation 1: "Clinical evidence shows that trigger finding works for reducing episodes" - https://www.ncbi.nlm.nih.gov/books/NBK560787/

About

Tether

Features
Read full description

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: β€’ Daily streak tracking to build consistent logging habits β€’ Supplement tracker β€’ Save and bookmark healing protocols β€’ Saved food scan results for quick reference β€’ Optional daily affirmations β€’ Dark mode β€’ Secure cloud backup when signed in β€’ 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/

Screenshots

Everwell4 screens
Tether4 screens

Verdict

The call

The clearest difference is device support: Everwell at 4 against Tether's 2. Everwell also leads on iOS requirement (11.0 vs 15.1). On price, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Everwell sells 7 in-app purchases, starting at $9.99 per month and Tether sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences Β· 4 level
Everwell versus Tether: the parameters behind the verdict, then further details
ParameterEverwellTether
PriceFreeFree
Update frequencyβ€”Every 2 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod, Apple Watch β€” betteriPhone, iPod
Requires iOS11.0 β€” better15.1
Further details β€” not scored
Size83 MB39 MB
Age rating4+17+
DeveloperEverwell Software Inc.Zachary Lyons

In-app purchases

7 purchases

Everwell

Subscriptions7
  • Premium Access$9.991 Month
  • Premium Access14 Days trial$9.991 Month
  • Premium Access$59.991 Year
Show 4 more
  • Premium Access$83.991 Year
  • Premium Access$95.991 Year
  • Premium Access14 Days trial$95.991 Year
  • Premium Access14 Days trial$119.991 Year
3 purchases

Tether

Subscriptions2
  • Tether Premium$4.991 Month
  • Tether Premium$39.991 Year
One-time1
  • Tether Premium$79.99

Questions

Is Everwell free?
Everwell is free to download, with in-app purchases available.
Is Tether free?
Tether is free to download, with in-app purchases available.
Do Everwell or Tether have ads?
Neither Everwell nor Tether shows ads.

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