Ipad 10.2 screen has deeper color than my other hardware
Unless you have accurately calibrated all your screens with a hardware colorimeter, then the chances are the iPad is the most accurate "out of the box".

Most devices' screens tend to be 'punched up' by the manufacturers to look good on the shop floor. If uncorrected after purchase, this can lead to very misleading colour workflows. Apple tends to do this less and instead relies on the deep colour capabilities of the screen itself - which can handle P3 colour, not just the sRGB common to most devices.

There's a good blog on how this can be perceived visually on IconFactory - Looking at the Future with some good imagery to test &amp; some hints as to how to manage colour across platforms - something about which entire books have been written.