G-Force Camera App for Android
VelocityCam reads the phone's motion sensors while recording and displays a stabilized G-force ball next to GPS speed, pitch, and roll. The reading is calibrated to how the phone sits in its mount at the moment recording starts, so lateral and longitudinal force reflect the vehicle rather than the mount angle.
What the G-force readout shows
The force ball is smoothed for a mounted phone in a moving vehicle. It is designed to be readable at a glance on video, not to replace instrumentation.
- Stabilized G-force tuned for vehicle mounts
- Automatic calibration at record start
- Manual live calibration when the mount shifts
- Vehicle-relative pitch and roll alongside G-force
- Synchronized playback of every sample
- Max total, lateral, acceleration, and braking figures in Pro statistics
Where it is useful
Cornering clips, launch and braking footage, trail articulation, boat chop, and motorcycle lean all become easier to compare when the force trace is visible next to the video. Drivers reviewing their own line get a rough, honest picture of how hard the vehicle was working.
Getting a usable reading
- 1
Mount rigidly
A loose or springy mount adds vibration the sensors cannot tell apart from vehicle motion. Rigid mounting is the single biggest factor in reading quality.
- 2
Let the app calibrate
VelocityCam treats the mounted orientation at record start as the reference. Set the phone the way you'll leave it before you hit Record.
- 3
Review and export
Replay the session with the force ball in sync, then export with the HUD composited into the new file.
Free
- G-force, speed, pitch, and roll captured with the video
- Classic, Handheld, and Minimal HUDs and synchronized playback
- Session highlights including max G-force
- Exports with the HUD baked in
Pro — one-time lifetime unlock
- Advanced statistics: max total, lateral, acceleration, braking, pitch range, roll range
- CSV telemetry export for your own analysis
- Adventure HUD profile and premium themes
- Offline Route Trace overlay
Sensor data stays local
Motion and location samples are used on the device to draw the HUD and to build the session record. Nothing is uploaded, and there is no account.
Device requirements
- Android 10 or newer
- Compatible rear camera (front-camera switching before recording, where supported)
- GPS hardware
- Motion sensors for pitch, roll, and G-force on mounted recording
- Free storage for recording and export
Frequently asked questions
How accurate is phone-based G-force?
It is a consumer accelerometer in a phone. Vibration, mount flex, and temperature all affect it. Treat the readings as indicative, not laboratory-grade, certified, or usable as legal proof.
Why does my reading drift?
Usually the mount moved. Recalibrate live, or stop and restart the recording with the phone seated where you want it.
Does it need cell service?
No. G-force comes from on-device sensors, and speed comes from GPS satellites rather than the mobile network.
Is G-force available in the Handheld HUD?
No. Handheld recording is built around GPS-based performance metrics for use without a mount, so it does not display pitch, roll, or G-force. Those gauges are specific to mounted recording.
Install VelocityCam and start recording
VelocityCam is open for testing on Google Play. Install the test build on any Android 10+ phone, record a real session, then tell us how it went.
Get notified about the public release
Open testing is live. Join the VelocityCam update list and we'll email you when the full public Google Play release becomes available, along with a small number of important major-update announcements. No daily emails and no spam.