Quantified Citizen 12+

Contribute to citizen science

Quantified Citizen Technologies Inc.

    • 4.3 • 22 Ratings
    • Free

iPhone Screenshots


Join groundbreaking research studies. Advance global health and 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 2.2.0

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

Ratings and Reviews

4.3 out of 5
22 Ratings

22 Ratings

darrenMmann ,

Dartzen Mann

i’m excited to live in a world where people live for the good of man.

thanks for creating this app, and for all of the other work you do to raise awareness🙏🏼🍄

smell the dirt, lend a hand, give comfort♥️



mobeensicko ,

Won’t let me sign up

Won’t let me sign up
Edit: still says my email has already been used even though I haven’t entered it or ever signed up yet. It won’t let me proceed past agreeing to the privacy policy.

Developer Response ,

Hi mobeensicko, thank you for writing a review! We’re so sorry that your experience did not match your expectations. This is on us. We were able to fix the sign up bug giving you trouble and the issue has been resolved. Please update to the latest version of our app if you haven't done so already. Again, thank you for your feedback.

Jessicafoxxfoto ,

Bad phrasing on some questionaries

Multiple questionnaires on the mdosing study are missing basic introductions as to why we’re answering the questions… phrasing on multiple choice questions like: “i felt like___” why is it past tense? It’s a questionnaire about anxiety but it doesn’t give the clear circumstance, except for the topic but it’s missing the scenarios…
Also for the monthly baseline… “how interested have you felt this past month” … interested in what?
these answers will be so skewed depending on someone’s assumptions for these questions.

I’m all for supporting a study but phrasing is kinda vital if you’re looking for useful answers/data in the end, but if you’re not paying someone for this and it’s confusing you’ll lose people fast.

(Happy to change my review knowing this is resolved)

Developer Response ,

Thanks for your feedback, and most of all for participating in a study! We’ve forwarded it to the study team. In some of the examples you mention the wording is from standard validated questionnaires like the DASS-21 and PANAS that have been used in thousands of studies, and some of the wording comes from previous studies on this topic. In these cases it was kept unchanged to allow for valid comparisons to other research. Changing the wording or presentation of a questionnaire mid-study can affect the validity of the data so some phrasings also got locked in. There are definitely ways things could be more clearly presented to reduce confusion, and a revised version of the microdosing study will be out shortly along with an update to the app. We’ll continue to work with the study team to make things more clear going forward, and you taking time to provide feedback is invaluable for helping this process along our best product.

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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