Support
For usage questions, feedback, or privacy inquiries, contact us by email below. We usually reply within a few business days.
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Contact Us
Email: xp84012493@163.com
Please include your device model, OS version, app version, joint/body region, and the steps to reproduce the issue.
FAQ
How do I start a measurement?
On the Measure tab, choose a body region (such as neck, shoulder, or knee), then select a measurement mode. Follow the on-screen guidance to face the camera front-on or sideways. Once the dashed outline aligns stably, begin the movement; the interface shows live angles and peak values.
Are readings accurate? Can they be used for medical diagnosis?
Angle readings depend on image quality, stance, lighting, and clothing occlusion, and are estimates only. This app does not provide medical advice, diagnosis, or treatment and cannot replace a professional assessment or a clinical goniometer. Do not use the data for medical decisions; stop immediately and consult a professional if you feel pain or discomfort.
What is the difference between Free and Pro?
The free version covers real-time measurement and stance guidance for neck, shoulder, and elbow. A one-time Pro purchase permanently unlocks waist, hip, knee, ankle, wrist, and deeper history features. Purchase or restore under Me → Upgrade.
How do I restore a purchase?
After reinstalling or switching devices, sign in with the same Apple ID or Google account used for the purchase, then tap Restore Purchases on the upgrade screen. Restoring a lifetime purchase will not charge you again.
How do I save a measurement?
After finishing a movement, tap “Save this measurement” to write the peak values to local history. In History you can filter, compare left/right, and view trends. History stays on device and is not uploaded.
What is the difference between screenshot and recording?
Screenshots save the on-screen view with angle overlays to your photo library. Videos recorded during measurement are raw camera footage without skeleton or angle overlays.
Tracking is unstable or I cannot align?
Measure in good lighting with a simple background; form-fitting clothing usually works better. Keep the required body parts fully in frame, and face the camera front-on or sideways as prompted. Some modes (such as wrist or lower limbs) require stricter stance.
Do I need internet or an account?
Pose estimation and angle calculation run on device. Measurement and history work offline and do not require an account. Purchases and restore require a connection to the App Store or Google Play.
Camera or photo library permissions?
Measurement needs camera access; saving screenshots or recordings needs photo library write access. You can revoke permissions anytime in system settings. See the Privacy Policy.
How do I change language or dark mode?
Open Me to adjust the interface language (Chinese/English) and light/dark theme.