iOS vs. Android Tilt Input

I recently purchased an iPad to begin testing games on iOS and I am immediately having issues with tilt controls. Values seem to differ between the two “Tilt” input nodes.

The game is played in landscape and tilting left or right (think steering wheel) will move the character left or right. Very simple stuff.

On android: X Tilt values range from 1.5 to -1.5 (tilting left to right respectively)

On iOS: X Tilt value remains constant at 1.5 when holding upright landscape. If the device is put flat on a table then X = ~0.

I was previously using tilt as an axis mapping for android and it was working fine.

I heard there were differences between the gyroscope and accelerometer. I am going to be testing out using values like rotation rate and whatnot but I would love to hear from someone who can give me a definitive answer.

Notes:
“Support Landscape Right Orientation” is the only layout checkbox enabled in the iOS project settings. I noticed left/right were both enabled by default.

Please help!!! I would like to know if there is a standard that I should be using when exporting to different mobile platforms with mobile controls.