Quantified Citizen 12+

Contribute to citizen science

Quantified Citizen Technologies Inc.

    • 4.4 • 85 Ratings
    • Free

iPhone Screenshots


Get personalized health insights while contributing to science.

Become a citizen scientist!

Download Quantified Citizen and join world-changing scientific research studies. In return, you receive rich, personalized health insights and contribute to global health and science.

Help test techniques like meditation and microdosing to determine how well they work. Find out if your creativity is affected by the substances you use or if your sleep is affected by sobriety and so much more. Through this health app, you can discover something new about yourself and something groundbreaking in the world of science!

Check out some of our cool studies

- Microdose.me - The largest mobile microdosing study in the world.
- Gratitude Study - Does watching films about gratitude correlate with improvements in well-being? Explore “visual healing” in this study.
- Personality and Drug Use Study - Do drugs play a role in altering our personalities?
- 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?

And more!

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) Share your data to advance global health and learn more about yourself 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.

Rich 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!

Do your part to change the world. Join the citizen science movement today!

What’s New

Version 2.6.1

This release fixes several bugs, and improves performance. It is recommended for all users.

Ratings and Reviews

4.4 out of 5
85 Ratings

85 Ratings

Natebroco ,

The Facade is Finally Being Revealed

This app explores the medicinal and overall beneficial side-effects of psilocybin, but it is more about improving the collective health of it’s users. By contributing to this app’s research, there will be more information to make mushrooms legal for the people that need them- as well as a self boost in mental and physical stimulation due to participating in the study.

Aljo775 ,

The idea is good but

The app seems to have a lot of bugs and does not flow well. Doesn’t allow you to fill out missed tasks and now I’m locked out from being able to further participate for an unknown reason. I really like the idea of what this study is trying to do and really want to help support it but the app itself doesn’t function well for me. The gratitude videos serious are really nice. I think once the bugs are worked out and the app is more user friendly I think a lot of great change can be made.

Developer Response ,

Thank you for your thoughtful review. We have fixed the bug that caused some users to be locked out of tasks in the next release and it will be available shortly (v.1.2.5). Feel free to reach out to us here https://quantifiedcitizen.com/contact-us/ with additional bug reports and suggestions. We've got a lot of great features planned so we can fulfill the potential of this idea.

ozten ,

Very Buggy

I am 2 weeks into a trial. The app is very buggy, which will bias results. This morning I got 3 duplicate push notifications. Everyday, it says I missed yesterday’s period, but I have only missed one day so far. I check in roughly the same time everyday. Today it showed me a bunch of new tasks, but the are all red and won’t allow me to do them. It took me 9 days before I realized there is a back arrow to correct accidental data entry. A great idea with. Lot of promise, but data isn’t trustworthy until UX fixes are made. Should have a baseline trail to measure accuracy.

Developer Response ,

Thank you for this detailed feedback. We have another release coming out soon that fixes some scheduling bugs, and will work on making the notifications be more concise and trustworthy in the release following that. If you'd like to provide additional feedback or suggestions you can get in touch here: https://quantifiedcitizen.com/contact-us/

App Privacy

The developer, Quantified Citizen Technologies Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Location
  • User Content
  • Identifiers
  • Usage Data
  • Sensitive Info

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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