Quantified Citizen

3.4
106 reviews
10K+
Downloads
Content rating
Everyone
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About this app

Get health data two ways:
1️⃣ Track health factors independently
2️⃣ Join a study
Or do both!

Health factors you can track without having to join a study:
* Anxiety
* Depression
* Stress
* ADHD
* Mood
* New scales are added regularly!

If you prefer to join studies, we have a range for you to choose from:
🍄 Microdose.me - The largest mobile microdosing study in the world. Led by Paul Stamets and a global team of scientists.
🧠 Mental Health Tracker - Ever wonder if your mental health is affected by a new routine or treatment regimen like light therapy, mindfulness, or a new medication? Find out with our tracker.
🍺 Sobriety and Well-being - Through a series of simple tests, daily check-ins, and optional wearable sleep data, we aim to find out how sobriety from alcohol affects sleep quality and dream recall.
🙏 Gratitude Study - Led by Louie Schwartzberg, we explore “visual healing” and ask: does watching films about gratitude correlate with improvements in well-being?
🔎 More studies in the app!

How It Works
1) Download the app and join as an anonymous participant – we won't ask for your name or email.
2) Answer questions, watch videos, and play game-like tests. Easy!
3) Automatically track your steps, sleep and more by connecting Apple Health and your wearables.
4) Receive rich health insights at the end of a study and improve your health along the way.

What to Expect
* Complete Privacy - We're committed to data privacy, encryption, anonymity and transparent policies. No sign up, no email, no Facebook connection required.
* Top-Quality Research - Our studies are rigorously designed with scientific protocols to produce credible findings.
* Personalized Health Insights - See your health trends and patterns whenever you complete a study. Compare your data anonymously with other participants. The more studies you join, the more you learn about yourself!

Learn more about your health while contributing to science today!
Updated on
Apr 8, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit

Ratings and reviews

3.4
104 reviews
Malak Crisp
September 27, 2025
Errors in app features, not receiving notifications despite adequate permissions set on my device and in app settings, which has caused me to miss study questions. I cannot send feedback through the app in the couple places there's links to do so; opens a page that says there was an error. It gives me the sense that this app has been abandoned by developers. I find high value in participating in these studies and I feel there is support lacking to properly keep track of us submitting data.
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Olya Royall
November 17, 2023
Downloaded the app, first was unable to load any studies whatsoever - kept getting a "something went wrong" error. When tried to go to put feedback in the app - also errored. After a day the studies were able to finally load, however was not actually able to join any of the studies because after filling out all the info and being eligible to participate the app just got stuck on a loading screen. Will be happy to update the rating once the app actually starts working.
11 people found this review helpful
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Luke
September 24, 2024
at some point all of my activities were completed but it just never gave me any results of any kind currently trying to Uninstall and reinstall just to see. otherwise. super nifty little tool for self reflection I guess. sort of makes you think and consider things or aspects of one's self you wouldn't normal consider. personally it made me realize something at little as eating chocolate before a meditation can drastically affect said meditation and that's pretty dang interesting¯\_(ツ)_/¯
6 people found this review helpful
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What’s new

Smoother onboarding for new users.

App support

About the developer
Quantified Citizen Technologies Inc
info@quantifiedcitizen.com
210-128 Hastings St W Vancouver, BC V6B 1G8 Canada
+1 604-227-3499