Questions, answered
Prevyu FAQ
What to know about photo-based body composition tracking, pricing, privacy, and platforms.
How accurate is body-fat estimation from a photo?
It is an estimate, not a clinical measurement. Pose, lighting, clothing, hydration, and other factors can affect a reading. Prevyu is most useful for following a consistent longer-term trend; do not compare its numbers directly with DEXA or assume they are medically equivalent.
What does the Progress Score mean?
It is a smoothed, banded summary of your check-in trend, designed to make direction easier to see while reducing the importance of small changes that may only be measurement noise.
How is Prevyu different from a body-fat smart scale?
A smart scale infers composition from bioimpedance; Prevyu reads a photograph. Neither is a lab measurement, and Prevyu does not claim to be more accurate. Prevyu adds the source photo, a smoothed trend, geometric proportions, and a visual history. You can also enter a measured body-fat figure from another source on any plan.
Which measurements run on my phone?
Photo-based proportions and posture analysis run on device. Requested AI composition readings, comparisons, assessments, Coach, Bulk or Cut, gallery analysis, and goal previews use server-side AI processing.
What is included for free?
Free users get unlimited photo check-ins and history, the Progress Score, on-device proportions, manual body-fat entries, and two AI composition readings per calendar month. The first three-angle assessment, first Bulk or Cut action, and one goal preview are also included.
Do free users get AI check-in comparisons?
No. AI comparisons count as Pro Insights. The one-time welcome grant for Bulk or Cut cannot be spent on a comparison.
Are my photos used to train AI models?
No. Requested AI features use Google's paid-tier Gemini service through Prevyu's server, and photos are not used to train AI models. See the privacy policy for full provider and safety-logging details.
Can Prevyu diagnose a condition or advise me about medication?
No. Prevyu is an adults-only general wellness app, not a medical device. It does not diagnose conditions, give medication advice, or replace a clinician.
Can I use Prevyu without an account?
No. Prevyu requires signing in with a Google account so check-ins and paid access can be associated with the correct account.
Do I have to use the AI features?
No. You can use Prevyu as a photo history with on-device proportion measurements and unlimited manual body-fat entries. AI analysis runs only when you request a feature that needs it.
What happens if I replace or lose my phone?
Install Prevyu on your new device and sign in with the same Google account to restore your stored check-ins and history. Pro restores through your app store. Weekly reminder settings are device-local and must be set again.
Is Prevyu available on iPhone?
Yes. Prevyu is available for iPhone through the App Store, in addition to Android through Google Play.
How do I delete my account?
Use the account-deletion control in the app. This starts deletion of the account and associated cloud data, subject to limited records retained for security, legal, or transaction purposes.
