Comparison

Allergy Log vs Tether

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

Head to head
About

Allergy Log

Track food reactions and environmental triggers to understand your health better. Log meals, symptoms, and use AI to scan ingredients from photos. Visualize trends with charts and export data for healthcare providers.

Highlights
  • Personalized allergy tracking
  • Smart food logging
  • AI ingredient scanning
  • Bristol Stool Scale integration
  • Visual data representation
  • Data export
  • Customizable themes
Features
Read full description

Take control of your health with Allergy Log – the all-in-one companion designed to help you track allergies, manage meals, and uncover insights about your triggers. Whether you’re managing food sensitivities, skin reactions, or seasonal allergies, Allergy Log empowers you to monitor and improve your well-being effortlessly. Key Features • Personalized Allergy Tracking: Log and analyze your symptoms, meals, and environmental conditions in one organized place. • Smart Food Logging: Quickly add meals with detailed ingredient lists and pinpoint potential triggers with ease. • Bristol Stool Scale Integration: Monitor your bowel movements to gain deeper insights into your gut health. • AI-Powered Insights: Use your camera to capture meals and let our AI analyze ingredients automatically. • Photo AI Ingredient Scanning: Simply snap a photo of your meal, and our advanced AI will detect and list its ingredients for you. • Visual Data Representation: Discover trends through clear, easy-to-read charts and summaries. • Data Export: Effortlessly export your logs and reports to share with healthcare providers or for personal record-keeping. • Customizable Themes: Personalize the app’s look with various themes to suit your style. • Intuitive Notifications: Set reminders to log meals, symptoms, or medications so you never miss a beat. Why Choose Allergy Log? • Comprehensive Health Tracking: From detailed meal entries to symptom logging – even tracking stool types – Allergy Log helps you identify triggers faster and more accurately. • Seamless Meal Management: Enjoy a smooth, one-tap logging experience that captures foods, ingredients, quantities, and notes, making meal tracking a breeze. • Privacy-First Approach: Your data is secure and private, giving you peace of mind while you focus on your health. • User-Friendly Design: With an intuitive interface and effortless navigation, Allergy Log is built for hassle-free use every day. Start taking control of your allergies and unlock new insights into your health. Download Allergy Log today and experience a smarter, clearer way to manage your well-being. Terms and Pricing: The annual subscription fee is $99.99 USD, giving you unlimited access to exclusive features as long as your subscription is active. The subscription renews automatically, with the charge applied to your iTunes account upon confirmation of your initial purchase. To disable automatic renewal, update your Account Settings at least 24 hours before the end of your current subscription period. For more information, please refer to our terms of service available at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ or privacy policy on https://magnetic-cement-d48.notion.site/Privacy-Policy-for-Allergy-Log-App-1459cea87bdb801ab424eb2ba555385b

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/

Screenshots

Allergy Log4 screens
Tether4 screens

Verdict

The call

The clearest difference is ads: Tether at none against Allergy Log's shown. Allergy Log's advantage is update cadence (every 3 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement 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. Allergy Log sells 3 in-app purchases, starting at $3.99 per 7 days 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.

UpkeepUpdate frequency

Allergy Log ships an update every 3 weeks, Tether every 2 months. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

Scorecard2 real differences · 7 level
Allergy Log versus Tether: the parameters behind the verdict, then further details
ParameterAllergy LogTether
PriceFreeFree
Rating4.0 (4 ratings) — better
Number of ratings4 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.615.1 — better
Further details — not scored
Size87 MB39 MB
Age rating4+17+
DeveloperOriginXZachary Lyons

In-app purchases

3 purchases

Allergy Log

Subscriptions3
  • Weekly$3.997 Days
  • Monthly$12.991 Month
  • Yearly3 Days trial$89.991 Year
3 purchases

Tether

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

Questions

Is Allergy Log free?
Allergy Log is free to download, with in-app purchases available.
Is Tether free?
Tether is free to download, with in-app purchases available.
Do Allergy Log or Tether have ads?
Allergy Log shows ads; Tether does not.
Which is updated more often, Allergy Log or Tether?
Allergy Log ships an update every 3 weeks, and Tether every 2 months. Most recently, Allergy Log was updated on September 17, 2026 and Tether on September 8, 2026.

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