Is the stylus tip active or passive?

Passive. It works like a finger on a capacitive touchscreen and needs no battery, pairing or charging. It will not give pressure sensitivity or palm rejection.

Will it work on an iPad or Android tablet?

Yes for basic tapping, scrolling and typing on capacitive screens. It is not a substitute for an Apple Pencil or an S Pen on apps that need pressure or tilt.

Does it contain gluten?

Testing found no indication of extractable gluten. The plant-based material is a small part of the pen, and the maker states the result of that testing.

How does the twist action work?

The barrel twists to extend and retract the writing tip, and the stylus tip sits on top. That keeps the ink tip covered when the pen is used on a screen.

Is it good for everyday writing?

It is a standard ballpoint-style pen aimed at light office and promotional use. Shoppers wanting a weighted, long-session writing pen should look at a metal-bodied pen instead.