GCam Support

Last updated: April 28, 2026

GCam is a hands-free camera that begins recording in response to G-force events detected by the iPhone's motion sensor. This page covers how the app works and how to get help.

Quick start

• Open GCam.
• Allow the camera, microphone, motion, and Photos prompts the first time.
• The g-force readout at the top of the screen confirms the motion sensor is active. While the device is at rest it sits near 1.00 g.
• When the device experiences a sudden change in acceleration, recording starts automatically and stops shortly after motion settles.
• Each clip auto-saves to your Camera Roll with a small motion chart drawn into the lower-left corner.

Gestures

• Double-tap the camera preview to switch between the front and back camera.
• Swipe up from anywhere on the camera screen to reopen the most recent clip.
• Swipe down on the playback view to dismiss it.
• Tap the playback view to pause / resume.
• Drag across the chart at the bottom of playback to scrub.

Troubleshooting

• The g-force readout stays at 1.00 g. That's normal. A stationary device reads ~1 g due to gravity alone. The readout deviates from 1.00 g only while the device is accelerating.
• Recording didn't start. The motion sensor needs to detect a sustained G-force event of at least ~0.2 seconds before recording begins. Very brief acceleration changes won't cross the threshold.
• Permissions screen keeps showing up. Open the iOS Settings app → GCam → grant Camera, Microphone, Motion & Fitness, and Photos (Add Only).
• Saved clip is missing audio or video. Make sure both Camera and Microphone permissions are granted in iOS Settings.
• The clip looks choppy at the start. GCam captures at 1080p 60fps. Older or storage-constrained devices may occasionally drop frames at the very beginning of a clip while the encoder ramps up.

Privacy

GCam doesn't collect, store, or transmit any personal data. Read the full privacy policy.

Contact

Questions, bugs, or feature requests? Email brian@brianmoore.com.