# Quantified Citizen Pro — Contribute to citizen science

> Contribute to citizen science (iPhone/iPad app by Quantified Citizen Technologies Inc..)

- Source: https://appshunter.io/ios/app/quantified-citizen-pro/id1580605645 (this page in markdown: same URL + `.md`)
- Developer: [Quantified Citizen Technologies Inc.](https://appshunter.io/developer/1475069860)
- Category: Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 68 MB
- Languages: English
- Released: 2022-03-17
- Data updated: 2026-05-13
- User reviews in markdown: https://appshunter.io/ios/app/quantified-citizen-pro/id1580605645/reviews.md

## What is Quantified Citizen Pro?

Quantified Citizen Pro is the professional version of the Quantified Citizen app. If you have been invited to join a study by one of our Academic Research Partners you will be able to review participation details, determine if you are eligible and join the study. 

Study participation includes performing activities according to the protocol created by an Academic Research. Activities include filling-out and submitting questionnaires, performing one or more cognitive tests which including finger tapping and memory tests, as well as several auditory tests.

Researchers can choose to request data from HealthKit and CareKit as part of a participant's involvement in a study. The user is given the option to Opt-In for including this data in which case they must also give permission to the app to access this data within their device settings. Participation is not required and a user can simply choose to not join the study. 


Creating a login is anonymous.


## Version history (last 5 releases)

### 2.10.0 — 2023-03-15

Design updates to the Activities page.

Optimized notification system - Fixes issue where some users did not receive notifications

Plus we've fixed a number of bugs and made performance enhancements to provide a smoother and faster user interface.

This release is recommended for all users.

### 2.9.3 — 2023-01-19

Design updates to the Activities page.

Optimized notification system - Fixes issue where some users did not receive notifications

Plus we've fixed a number of bugs and made performance enhancements to provide a smoother and faster user interface.

This release is recommended for all users.

### 2.9.2 — 2022-12-23

Design updates to the Activities page.

Optimized notification system - Fixes issue where some users did not receive notifications

Plus we've fixed a number of bugs and made performance enhancements to provide a smoother and faster user interface.

This release is recommended for all users.

### 2.9.0 — 2022-11-30

Design updates to the Activities page.

Optimized notification system - Fixes issue where some users did not receive notifications

Plus we've fixed a number of bugs and made performance enhancements to provide a smoother and faster user interface.

This release is recommended for all users.

### 2.8.0 — 2022-10-24

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

## Apps similar to Quantified Citizen Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Harmony Self Hypnosis](https://appshunter.io/ios/app/harmony-self-hypnosis/id342563231) | 4.8 (3,953) | Free | Health & Fitness |
| [Spren Body Composition Scanner](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999) | 4.7 (1,480) | Free | Health & Fitness |
| [Habio - Daily Habit Tracker](https://appshunter.io/ios/app/habio/id1517360968) | 4.3 (3,965) | Free | Health & Fitness |
| [InnerSelf: Your Mental Coach](https://appshunter.io/ios/app/innerself/id1612183654) | 4.8 (668) | Free | Health & Fitness |
| [Sens.ai Brain Training](https://appshunter.io/ios/app/sensai-brain-training/id1612297335) | 3.8 (35) | Free | Health & Fitness |
| [Numo: Cringe-Free ADHD App](https://appshunter.io/ios/app/numo/id1628994767) | 4.4 (1,044) | Free | Health & Fitness |

## More apps by Quantified Citizen Technologies Inc.

- [Quantified Citizen](https://appshunter.io/ios/app/quantified-citizen/id1485884140)

All apps by Quantified Citizen Technologies Inc.: https://appshunter.io/developer/1475069860

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-13.*