Caution : This app is for iPhone 4 & 4S.
This app allows you to measure accelerating performance of your car or bike.
Three different ranges of measurement can be set.
It automatically measures and shows results by the 1/100 seconds.
It is very useful to clarify the effects of your tunings.
-- Find a flat, straight course for measurement.
-- In the default setting, fix firmly your iPhone whose z axis is parallel to the direction of movement.
-- When you are ready to start, tap [Are you stopping ?] button.
-- Start any time you want ! (Screen shot #2)
-- When you start, it automatically starts measurements (#3)
-- When measurement of each range finishes, it rings a different sound, which can be turned off.
-- When measurements of all the three ranges finish, the display freezes (#1).
-- Start and finish points of each range can be set by tapping them (#4).
-- The measurement axis can be set by tapping [Set Axis] button.
The -x, -y, or z axis can be selected (#5).
-- The nearest 6 measurements are displayed.
-- Average G force in the second range (dark cyan in the center) is displayed at the bottom.
-- You can quit measurement by braking lightly.
-- Keep the law in public roads.
-- It should be basically operated by passengers.
-- Measurements exceeding 40 seconds are not recommended.
-- Automatic measurements may not work correctly in vibration-rich vehicles like single-cylinder bikes.