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Frequently Asked Questions

Q. Is the Gaitometer still available?
A. The Gaitometer was an iPhone and iPod App that was available from 2011 - 2017. Due to changes in the Apple iOS operating system this App is no longer available, and the information on this website is provided for informational purposes.

Q. What is the Gaitometer?
A. The Gaitometer was an iPhone and iPod touch App designed to measure the asymmetry of the step pattern when worn by the user, and provide real-time audible and visual feedback. Following an injury or surgery involving the lower body, an abnormal gait pattern (asymmetric walking pattern) often persists even after the injury heals. The feedback provided by the Gaitometer can assist the user in reducing or eliminating these types of gait irregularities.

Q. What does the Gaitometer measure?
A. The Gaitometer uses the built-in accelerometers in the iPhone and iPod touch to detect and analyze the basic step cadence symmetry of the user. This measure of symmetry is calculated as a “Gait Ratio”, where the duration of each step is compared to the duration of the previous step (gait cadence). A symmetric gait cadence will yield a Gait Ratio value near 1.0, while an asymmetric gait cadence will yield a Gait Ratio substantially higher.

Q. What benefit does the Gaitometer provide?
A. Even after the injury heals, gait irregularities may persist. The Gaitometer measures the Gait Ratio in real-time, and uses a selectable Gait Warning sound to provide immediate gait feedback. This feedback makes the user aware of any gait irregularity, and allows the user to potentially reduce the gait irregularity.

Q. How should the Gaitometer be worn?
A. The Gaitometer should be worn firmly at the CENTER OF BODY. Using a belt clip, fanny pack, firmly fitting backpack, or sliding under the center beltline will yield the best results. DO NOT wear the device in a side pocket, on hip, on arm, or in a loose article of clothing.

Q. Where should the Gaitometer be used?
A. The Gaitometer will work best on consistent surfaces such as sidewalks, running tracks, treadmills, stairways, etc. Walking on bumpy sidewalks, hiking trails, inside the home, or other inconsistent walking surfaces or paths will yield incorrect results.

Q. How much does it cost?
A. The Gaitometer was an application available for the iPhone and iPod touch that uses the built-in accelerometers in these devices to detect and analyze the basic step asymmetry of the user. This App was introduced at a price of $2.99 U.S. (prices in other countries may vary slightly). The Gaitometer App was compatible with iPhone and iPod touch devices running iOS 4.0 or later.

Q. Will the Gaitometer measure steps when the App is in the background?
A. The Gaitometer will only measure steps when you are on the Gait Meter view and the Gaitometer App is the active App on your device. The App will automatically Pause when you load another application, and resume when restarted. It can generally run for several hours when your device is fully charged.

Q. How Accurate is the Gaitometer?
A. The Gait Ratio accuracy of the Gaitometer can be as high as +/- 0.02. However, irregularities in the walking surface, incorrect positioning of the device (should be worn firmly at CENTER OF BODY), stray steps, etc. can all contribute to uncertainty in the measured Gait Ratio. Therefore, an Avg Gait Ratio of 1.00 generally won't be achieved in a normal gait, but an Avg Gait Ratio near 1.0x is possible.

Q. What are the limitations of the Gaitometer?
A. The Gaitometer only measures the asymmetry of the duration of each step when compared to the duration of the previous step (gait cadence). Although gait cadence is a very important aspect of a healthy gait, there are potentially many aspects associated with a complete measurement of gait asymmetry that can be considered. The use of the Gaitometer is not a substitute for individualized gait analysis and therapy by a trained professional.

Q. What does the Avatar animation on the Gait History represent?
A. The Avatar animation is a visual representation of the Gait Ratio for the most recent time period.