Join voluntary health research on your terms.
Improve your health with the same personal health companion — and optionally contribute to wellness research that can help you and others. Participation is always opt-in, never required to use Carthalis.
Wellness education, not diagnosis. · Carthalis research participation is always opt-in
Our research approach
Carthalis research participation means optionally contributing to wellness science while you use your personal health companion — not turning you into a data product. The Carthalis research program is user-first: participation is voluntary, transparent, and reversible, and it never gates daily coaching, educational wellness scores, or signup.
Carthalis is a wellness companion first — not a pharma recruitment portal or clinical trial platform. Research sits beside your everyday health picture, with clear consent before anything is shared.
Voluntary
Carthalis research participation is optional. You can use daily coaching, wellness scores, and Journey tools without joining any study.
Transparent
Before you opt in, Carthalis explains purpose, scope, and who can access contributed data — separate from everyday app use.
Reversible
You can change your mind. Research sharing is a distinct voluntary choice aligned with data ownership — not a condition of signup.
What voluntary participation looks like
When you choose to participate, Carthalis may invite check-ins through the same daily home you already use — validated wellness surveys and study Pulse cards when enrolled. These support self-reflection and coaching context, not medical diagnosis.
Validated wellness surveys
PSS-10, PHQ-9, GAD-7, and related assessments on Pulse support self-reflection and coaching context — wellness education, not diagnosis.
Study Pulse cards when enrolled
If you join a program, study-specific check-ins may appear on your daily home — invitations only, never automatic enrollment.
Never required for the core product
Contributing to research is never required for daily coaching, Twin scores, or signup. Health research opt-in is always your choice.
When studies are available
- Study invitations may appear on Pulse when you are enrolled in an approved program — there is no public study catalog on this page.
- Signing up for Carthalis does not enroll you in any study. Carthalis research participation starts only when you choose to learn more about an available program.
- For research teams evaluating cohort dashboards and admin analytics, see For Studies — a separate path for operators, not automatic enrollment for app users.
Methods and instruments we build on
Carthalis uses established, validated instruments in the app for educational wellbeing context — paired with wellness education, not diagnosis. We do not list unverified publications or trial outcome statistics on this page.
| Instrument | Purpose | Wellness framing |
|---|---|---|
| PSS-10 | Perceived stress self-reflection | Coaching context — not diagnosis |
| PHQ-9 | Mood and wellbeing check-ins | Educational screening-style — discuss with your provider |
| GAD-7 | Anxiety-related self-awareness | Wellness education — not clinical certainty |
How to collaborate
Using Carthalis as your companion
Start free to build your wellness picture with daily coaching and educational scores. If a study invite appears later, you choose whether to opt in — Carthalis research program participation is never assumed.
For research teams
Research operators evaluate cohort dashboards, daily check-in compliance, and admin analytics through For Studies — with a demo for operators, not consumer auto-enrollment.
Partners & general inquiries
For partnership conversations or questions about collaboration scope, visit Partners or Contact — without implying production cohort access from this page.
Your data and your choice
Your health data works for you first. Research sharing requires explicit opt-in — separate from everyday app use — and aligns with Carthalis data-ownership themes on Trust & Safety.
- Wellness education, not diagnosis.
- Research participation is voluntary, transparent, and reversible.
Read our Trust & Safety commitment and privacy policy for collection, consent, and deletion choices.
Common questions
Start with your wellness companion
Use Carthalis for clarity, daily coaching, and educational wellness scores — and opt into research only when you choose.
Research participation is voluntary, transparent, and reversible. · Trust & Safety