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Quantified Citizen

Quantified Citizen

Get personalized health data.

98 ratings
73 reviews
💪 Health & Fitness

Archived App (Last seen on 27 Apr 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • November 13, 2019
  • April 10, 2024

Developer

Quantified Citizen Technologies Inc.
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Reviews summary↘︎
⭐73
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🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦w/o updates
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About

Track personal health factors like mood and stress, or participate in scientific studies on topics such as microdosing and mental health. Gain personalized health insights and contribute to research while maintaining complete anonymity.

✓Track anxiety, depression, and mood
✓Participate in microdosing studies
✓Monitor mental health and routines
✓Analyze sobriety and well-being
✓Explore gratitude and visual healing
✓Connect Apple Health and wearables
✓Receive personalized health insights
Show original description

What users say

Summarized from real user reviews of Quantified Citizen. Based on 98 reviews and a 4.1/5 average, it highlights the 5 positives and 23 negatives reviewers mention most about this Health & Fitness app.

Positive things

  • 💡Interesting study concepts
  • 👍Easy to use interface
  • 💡Great idea for research
  • 👍Polished UI
  • 💡Insightful videos

Negative things

  • 🐛App crashes frequently
  • 🐛App is unusable
  • 🐛Server errors during sign up
  • 🐛Login issues
  • 🐛Screen refreshing/unresponsive
  • 🐛Biometric authentication loop
  • 🐛Incomplete questionnaires
  • 🐛Missed deadlines due to no notifications
  • 🐛Broken feedback option
  • 🐛No response from support
  • 🐛No results received
  • 🐛Video lag/streaming issues
  • 🐛Locked activities
  • 🐛Inaccurate tap tests
  • 🐛App not maintained
  • 🐛Sign up errors
  • 🐛Blank screens
  • 🐛Password entry issues
  • 🐛Bad phrasing in questionnaires
  • 🐛Request timeouts
  • 🐛Duplicate notifications
  • 🐛Daily questionnaire status issues
  • 🐛App not flowing well
See all reviews

What's New in Quantified Citizen

2.10.2

April 10, 2024

Smoother onboarding process for new users

User reviews

Most RecentHighest RatedLowest Rated

Persistent crash

All this app does is crash. from the studies that I can see before it prompts me to use my biometrics to sign in again after roughly 3 seconds, the studies look super interesting! But alas…it won’t allow me to even stay on a screen long enough to even across or click on anything.
echar89echar89

Not working for a few weeks

I was using the app for a few days and enjoying it but then about three weeks ago it went dead. I can’t log in or create a new account. When I try to log in with my pass phrase it says that I haven’t signed up yet. If I try to start a new account it stops and says there is a server error and to try again later. I hope this can be fixed because I was looking forward to using it
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OumuhaiOumuhai

Doesn’t work

Mine doesn’t work. Screen keeps refreshing making it impossible to use.
Gossamer WhumpGossamer Whump

Issues? Can’t sign up

Keeps reporting a server error to try again later. Uninstalled and reinstalled; same thing?!?
Bucky-CBSBucky-CBS

Damn..

there seems to be some problem I get stuck before the questionnaire is finished a couple times now I gave up using it
reviewer00212reviewer00212
See 68 more reviews

Developer apps

Quantified Citizen Pro
Quantified Citizen Pro

Contribute to citizen science

💪 Health & Fitness
Free
See developer apps

User experience

🐞

Reported Bugs

26 issues

Persistent crashing

Bug

Not working for weeks

Bug

Screen keeps refreshing

Bug

Server error on sign up/login

Bug

Stuck before questionnaire completion

Bug

Biometrics authentication loop

Bug

Never notified about new surveys

Bug

Feedback option broken

Bug

Tap test unresponsive

Bug

App not functional/maintained

Bug

Cannot complete surveys requiring reordering

Bug

Error message: type “bool” is not a subtype of type ‘iterable<dynamic>’

Bug

Email already in use error during sign up

Bug

Blank screen on last demographic question

Bug

Cannot enter passwords, erases as scrolling

Bug

Request timeout during sign up

Bug

App crashes on M-D study

Bug

App crashes after consent

Bug

Videos don't stream

Bug

Videos lag badly

Bug

Activities locked, missed notifications

Bug

Intake questionnaire needs to be completed but was

Bug

Daily questionnaire marked as completed when new day

Bug

Duplicate push notifications

Bug

Missed yesterday's period despite checking daily

Bug

New tasks are red and unclickable

Bug
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Requested Features

5 requests

Add Russian language support

Feature

Improve notification system for surveys

Feature

Allow viewing of study results

Feature

Increase time window for completing activities

Feature

Add more alarms for incomplete tasks

Feature

FAQ

What does Quantified Citizen do?

Quantified Citizen allows you to track various personal health factors such as anxiety, depression, and mood. It also provides opportunities to join scientific studies on diverse topics, offering personalized health insights based on your data.

What kind of studies can I join?

You can join a range of studies, including the Microdose.me study, a Mental Health Tracker to see how routines affect well-being, a Sobriety and Well-being study, and a Gratitude Study exploring visual healing. More studies are regularly added to the app.

Is Quantified Citizen free to use?

Yes, the application is free to download and use. There are no in-app purchases or advertisements mentioned in the provided description, indicating a completely free experience for users.

How does the app ensure privacy?

The app is committed to complete privacy, encryption, anonymity, and transparent policies. It does not require sign-up, email, or Facebook connection, allowing users to participate as anonymous individuals.

What are the benefits of using Quantified Citizen?

By using Quantified Citizen, you can gain a deeper understanding of your health trends and patterns, receive personalized health insights, and contribute to high-quality scientific research. You can also compare your data anonymously with other participants.