Tether vs AIP Diet Tracker
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Tether
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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. Tetherβs 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 bodyβs 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/
AIP Diet Tracker
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Calm is an AIP diet tracker for people following the Autoimmune Protocol, the autoimmune version of the paleo diet. Whether you live with Hashimoto's, lupus, rheumatoid arthritis, IBD, psoriasis or another autoimmune condition, Calm keeps the elimination phase, your symptoms and every food reintroduction in one clear place. IS THIS AIP? THE FOOD GUIDE - Check 220+ foods against the AIP rules: yes, gray area, eliminated or avoid - See which reintroduction stage each eliminated food belongs to - Search any ingredient before you shop or cook DAILY SYMPTOM LOG - Rate how you feel each day and score symptoms from 0 to 10: joints and muscles, digestion, energy and brain fog, skin, mood, sleep, headaches and more - Add sleep, stress, exercise and the Bristol stool scale - Write down what you ate and see whether the day was AIP clean, gray area or non-AIP - Build a record your healthcare provider can review FOOD REINTRODUCTION - Work through the four AIP reintroduction stages, one food at a time - Note what you ate and your symptoms at 2, 8 and 24 hours - Get check-in reminders at 8, 24, 48 and 72 hours, then record the outcome - Free: up to 5 reintroductions YOUR AIP JOURNEY - Move from elimination through early and active reintroduction to maintenance - Record your conditions and baseline symptoms to compare against later CALM PRO - Unlimited reintroductions - Symptom trend charts over weeks and months - Personal food map of your triggers and safe foods - AI AIP guide: ask a question about the protocol and get an answer - PDF report to share with your healthcare provider - Shareable journey card Calm is a tracking tool, not a medical app, and it does not give medical advice. Talk to your healthcare provider before you start an elimination diet or change your treatment. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: AIP Diet Tracker at every 2 weeks against Tether's every 2 months. Tether's advantage is iOS requirement (15.1 vs 18). On price, ads, in-app purchases and device support 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
Both are free to download. Tether sells 3 in-app purchases, starting at $4.99 per month and AIP Diet Tracker sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Tether ships an update every 2 months, AIP Diet Tracker every 2 weeks. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.
| Parameter | Tether | AIP Diet Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 15.1 β better | 18 |
| Further details β not scored | ||
| Size | 39 MB | 11 MB |
| Age rating | 17+ | 4+ |
| Developer | Zachary Lyons | Karol Jaworski |
In-app purchases
Tether
- Tether Premium$4.991 Month
- Tether Premium$39.991 Year
- Tether Premium$79.99
AIP Diet Tracker
- Calm Pro$4.991 Month
- Calm Pro1 Year trial$39.991 Year
- Calm Pro$39.991 Year








