Autox Data Logger
Data logger for collecting and analyzing run data for autocross on iOS. Map the course, record your runs, then analyze your performance! Streamlined app flow to quickly analyze data between runs to find time during the event.
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Features
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Map the course, including the cones!
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Record your runs
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Analyze your runs with GPS traces, video, speed vs distance plots, time deltas, and g-force plots
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Automatically start and stop recording for hands free data logging
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Export your data
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Import runs from others
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An overview of the app can be seen in this video on youtube​
Data Collection
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The data collection is based on GPS/GNSS data and is compatible with various devices. Some of which connect directly to the app for the highest quality data collection. The solutions which provide the best quality data are:
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Opensource DIY GPS module (under $50!)
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The next best options would be any GPS device which directly pairs to an iPhone. However, even devices that claim 10hz may not transmit data at 10hz to the app (due to how iOS manages the connection) so the devices listed above are strongly encouraged.
Finally, the internal phone GPS will only transmit data at a rate of 1hz. This is too low for any motorsports applications so the app offers a sensor fusion algorithm to interpolate between the slow 1hz GPS readings with the phone's internal IMU data. The data quality will be noticeably worse than an external device but we hope that it can at least be useful for some basic data analysis. The sensor fusion algorithm can also be used for external devices that at internally managed by iOS.