Does it work with devices other than iPad?

It connects over Bluetooth, so it pairs with most tablets and phones that support Bluetooth keyboards. The layout and sizing are tuned for iPad use.

Does it have a number pad?

No. It uses a compact 65% layout without a number pad, which keeps it narrow enough to match a tablet.

How heavy and thick is it?

It weighs 6.35 oz and is 0.24 inch thick, so it adds little bulk to a bag.

No, the keys are not backlit. You will need ambient light to type comfortably in the dark.

Is the Keys-to-Go worth it?

It makes sense if portability matters more than a full-size layout. You get a thin, light keyboard with scissor switches that pairs over Bluetooth, but you give up a number pad, backlighting and any typing tilt.

How does it compare with the iPad Magic Keyboard?

The Keys-to-Go is far thinner and lighter and works as a standalone keyboard, while the Magic Keyboard adds a trackpad, a kickstand-style hinge and a case. The trade-off is that the Keys-to-Go has no backlight and no adjustable angle.