Comparison

Hazel vs Thyself

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

Head to head
About

Hazel

This app helps you understand your Hashimoto's condition by tracking diet, stress, and lab results. Visualize your data to identify triggers and make informed decisions about your health. Offers custom recipes, stress management tools, and research-based resources.

Highlights
  • Track daily habits and symptoms
  • Log meals by photo
  • Visualize thyroid lab history
  • Generate custom diet recipes
  • Access guided meditations
  • View research-based resources
Features
Read full description

Make sense of your Hashimoto's. Hazel turns your symptoms, labs, meals, and supplements into a clear picture - so you can finally see what's helping you feel better. Living with Hashimoto's often feels like a guessing game. Flare-ups happen without warning. Diet, stress, sleep, and lab results all matter - but tracking them across endocrinologist visits, supplement bottles, and meal photos on your phone is exhausting. Hazel is built for the work between appointments. WHAT HAZEL DOES - Ask Hazel anything, by chat or voice. Your AI companion knows everything you've logged: meals, supplements, labs, symptoms. It surfaces patterns you'd miss, like "your last three brain fog spikes came after low-sleep nights". - Track symptoms and supplements in seconds. Log fatigue, brain fog, mood, body pain, and the supplements you take, with reminders that fit your routine. - Snap your meals. Hazel identifies what's on your plate and learns which foods correlate with how you feel over time. Built for AIP, anti-inflammatory, and gluten-free patterns. - Log your labs. TSH, T3, T4, anti-TPO, free T4, and antibodies - visualized over time so you can see whether your treatment plan is actually working. - Doctor-ready reports. Export a clean PDF summary of your last 90 days - labs, symptom trends, interventions tried - to share with your endocrinologist or functional medicine doctor. - Tools for the journey. Guided meditation, NSDR (Non-Sleep Deep Rest), and educational content rooted in published research. HOW IT WORKS 1. Log daily - symptoms, meals (photo or manual), supplements, sleep. Takes under a minute. 2. After a week, Hazel surfaces what's trending better and what needs attention. 3. After three months, your labs and lifestyle tell one story - and you can share it with your doctor. WHO HAZEL IS FOR Hazel is for the person who has been diagnosed with Hashimoto's thyroiditis or sub-clinical hypothyroidism and wants to do the lifestyle work alongside their medication - the AIP diet experiments, the supplement protocols, the stress management, the patient self-advocacy. If you've ever sat in a doctor's office trying to remember what changed since your last lab draw, Hazel is for you. SUBSCRIPTION A free trial is available so you can explore all features before committing. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple ID settings. NOTE Hazel is a tracking and educational tool, not medical advice. All information is meant to support - not replace - your conversations with your healthcare provider. Always consult your endocrinologist before making changes to your medication or treatment plan. START YOUR FREE TRIAL Download Hazel, log your first symptom, snap your first meal, and start connecting the dots. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://www.meethazel.app/privacy

About

Thyself

Log symptoms and lab results to prepare for doctor appointments. Generate a personalized brief with key questions and insights to ensure your concerns are addressed effectively. Designed for individuals managing thyroid conditions.

Highlights
  • Symptom logging
  • Lab result tracking
  • Appointment Prep Brief generation
  • Medication tracking
  • Educational articles
  • Trend analysis
Features
Read full description

Finally understand why you feel the way you feel. Thyself is the thyroid tracker for Hashimoto's, hypothyroidism, hyperthyroidism, Graves' and post-surgery patients. Log symptoms, medication timing and meals in about 10 seconds a day, then walk into your next appointment with the evidence your labs alone can't show you. WHAT YOU CAN DO • Track daily symptoms, energy and brain fog in 10 seconds • Describe a symptom in your own words and confirm the matches before anything is saved • Log your thyroid medication and supplements with timing • After you take your dose, see countdowns for coffee, breakfast, and calcium or iron, with optional reminders • Log meals in your own words and spot triggers like gluten, soy, dairy, and caffeine or calcium near your medication • Track TSH, Free T3, Free T4, antibodies and more • Keep a thyroid ultrasound log for scan dates, gland volume and nodule sizes (Thyself does not interpret scans) • Turn on optional cycle tracking, off until you choose it and kept out of AI features • Build streaks, rings and badges that keep you consistent • Generate an appointment brief from your own logged data WHY THYSELF IS DIFFERENT Most health apps are generic trackers. Thyself is built for thyroid patients. We understand medication timing windows, absorption blockers like caffeine, calcium and soy, the autoimmune nature of Hashimoto's, and the gap between how you feel and what your labs say. FREE TO START Everything above is free, including one AI-generated insight and one appointment brief per month, built from your own logged data. AI features are optional and always ask your permission first. THYSELF PRO • Unlimited appointment briefs • Share your brief before your visit • Full lab trend charts • Your complete symptom history, not just the last 30 days • Fresh AI insights every week as your data changes • A symptom and lab card when a symptom keeps showing up while your TSH is in range, so you can raise it with your doctor Choose Monthly, Annual, or Lifetime. New subscribers get a 14-day free trial on Monthly and Annual. Lifetime is a one-time purchase that unlocks all features for good. BUILT BY A THYROID PATIENT Thyself was built by someone who lives with Hashimoto's disease and got tired of generic wellness apps that don't understand what we go through. Every feature exists because a real thyroid patient needed it. Your data is stored securely, and you control what you share with your doctor. SUBSCRIPTION DETAILS Monthly and Annual plans renew automatically unless cancelled at least 24 hours before the end of the current period. If you start a free trial, you are charged when it ends unless you cancel at least 24 hours before it ends. Otherwise, payment is charged to your Apple ID at confirmation of purchase. Any unused portion of a free trial is forfeited when you purchase a subscription. Manage or cancel anytime in your Apple ID settings under Subscriptions. Lifetime is a one-time purchase and does not renew. Thyself is not a medical device and does not provide medical advice. Always consult your doctor before making health decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getthyself.com/privacy

Screenshots

Hazel4 screens
Thyself4 screens

Verdict

The call

The clearest difference is monetization model: Thyself at free against Hazel's free with in-app purchases. On price, rating, review sentiment and ratings volume 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. Hazel sells 6 in-app purchases, starting at $6.99 per month and Thyself sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Hazel against 5.0 for Thyself. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Hazel ships an update every 8 days, Thyself weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Hazel versus Thyself: the parameters behind the verdict, then further details
ParameterHazelThyself
PriceFreeFree
Rating5.0 (10 ratings)5.0 (8 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better8
Update frequencyEvery 8 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size76 MB50 MB
Age rating17+4+
DeveloperHazel Bio Inc.Philip Lombardi

Customer experience

Hazel

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Thyself

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

Hazel

Subscriptions6
  • Monthly Premium7 Days trial$6.991 Month
  • Monthly Premium7 Days trial$7.991 Month
  • Monthly Premium$9.991 Month
Show 3 more
  • Hazel Monthly Premium7 Days trial$12.991 Month
  • Monthly Yearly Premium7 Days trial$49.991 Year
  • Yearly Subscription14 Days trial$49.991 Year
3 purchases

Thyself

Subscriptions2
  • Thyself Monthly14 Days trial$9.991 Month
  • Thyself Annual14 Days trial$39.991 Year
One-time1
  • Thyself Lifetime$79.99

Questions

Is Hazel free?
Hazel is free to download, with in-app purchases available.
Is Thyself free?
Thyself is free to download, with in-app purchases available.
Which has better reviews, Hazel or Thyself?
Hazel and Thyself are both rated 5.0 out of 5 on the App Store, from 10 and 8 ratings respectively.
Do Hazel or Thyself have ads?
Neither Hazel nor Thyself shows ads.
Which is updated more often, Hazel or Thyself?
Hazel ships an update every 8 days, and Thyself weekly. Most recently, Hazel was updated on October 30, 2026 and Thyself on October 31, 2026.

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