Comparison

Tether vs MyVitalSync

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

Head to head
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: • 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/

About

MyVitalSync

Transform your lab reports into a comprehensive health overview. This app uses AI to extract biomarkers, identify areas needing attention, and calculate your biological age and health score. Track trends, prepare for doctor visits, and manage family health profiles.

Highlights
  • AI biomarker extraction
  • Biological age calculation
  • Health score assessment
  • Trend tracking
  • Doctor preparation questions
  • Family health profiles
  • Apple Health integration
Read full description

Your mom's labs. Your dad's results. One timeline, shared with you, with their consent. Even from another state or country. Their well-being comes first. MyVitalSync turns family lab reports into a clear picture of what needs attention, what changed, and what to ask at the next visit. WHAT YOU GET Family profiles — track labs for up to 5 people in one app, each with their consent Needs attention — see what's flagged, in plain English Trends — every marker across visits, so new labs show what changed Labs + wearables — sleep, strain, and recovery next to bloodwork, one outlook Health age and Health Score — from your markers, not a clinical measurement Doctor Prep — questions ready for the visit Health Coach — ask about your results anytime WORKS WITH ANY LAB Quest, LabCorp, hospital labs, international labs. PDF or photo. BUILT FOR PRIVACY Your lab file is never stored. When you upload a report, it's read in memory, your results are extracted, and the original file is discarded — permanently. Only your marker data is saved. AI processing runs on AWS under a HIPAA Business Associate Agreement. Your data is never sold or shared with advertisers, insurers, or employers. Full details at myvitalsync.app/trust Not medical advice. Always consult your healthcare provider. Terms: https://myvitalsync.app/terms Privacy: https://myvitalsync.app/privacy

Screenshots

Tether4 screens
MyVitalSync4 screens

Verdict

The call

The clearest difference is update cadence: MyVitalSync at every 5 days against Tether's every 2 months. On price, ads, in-app purchases and device support 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. Tether sells 3 in-app purchases, starting at $4.99 per month and MyVitalSync sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Tether ships an update every 2 months, MyVitalSync every 5 days. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard1 real difference · 8 level
Tether versus MyVitalSync: the parameters behind the verdict, then further details
ParameterTetherMyVitalSync
PriceFreeFree
Rating—4.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size39 MB45 MB
Age rating17+12+
DeveloperZachary LyonsSamvion Labs LLC

In-app purchases

3 purchases

Tether

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

MyVitalSync

Subscriptions2
  • Individual Monthly$3.991 Month
  • Family Monthly$8.991 Month

Questions

Is Tether free?
Tether is free to download, with in-app purchases available.
Is MyVitalSync free?
MyVitalSync is free to download, with in-app purchases available.
Do Tether or MyVitalSync have ads?
Neither Tether nor MyVitalSync shows ads.
Which is updated more often, Tether or MyVitalSync?
Tether ships an update every 2 months, and MyVitalSync every 5 days. Most recently, Tether was updated on September 24, 2026 and MyVitalSync on September 22, 2026.

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