Should I use a screen saver on my iPad?

Presumably you refer to a screen protector - these commonly being either laminated glass or a plastic film.

Whether or not you choose to use of a screen protector is largely personal preference - but there are considerations in making this choice.

iPad screens are robust, but the anti-reflection treatment and oleophobic coating can be easily damaged by tiny grit/dust particles that are unavoidable in most environments. The oleophobic coating is a chemical sacrificial layer, intended to repel oils (from your skin) and other contaminants. The oleophobic coating will wear-out and lose effectiveness over time.

Your iPad screen is the single most expensive component of your iPad - whereas a screen protector is sacrificial layer that, if damaged, is easy and cheap to replace.

Zagg and OtterBox are amongst the better manufacturers of tempered glass screen protectors - with good reputation. If using a screen protector, always use a well known brand - choosing a screen protector that is specifically designed for your iPad model. Cheap or no-name screen protectors can cause issues, in particular if you intend to use an Apple Pencil with your iPad.

Some users comment that a glass screen protector makes the screen very slippery when using the Apple Pencil. The alternative is a matt/textured film screen protector - but these have two principal disadvantages.

1) The textured film reduces clarity and contrast

2) Accelerated wear of the Pencil tip, necessitating frequent tip replacement.

Good quality tempered glass screen protectors from reputable manufacturers, that are designed for your iPad, will have absolutely no impact upon sensitivity of the screen or usability of an Apple Pencil. By contrast, cheap “generic” screen protectors of any type, whether glass or film, can cause problems. The good options often include a money back guarantee.

Of available options, Zagg arguably have the best reputation; you are very unlikely to find reported issues or complaint with their screen protector products.

Also consider that physical screen protectors can be removed without affecting your iPad warranty. Liquid screen protector products (not recommended) offer no physical damage protection, are irreversible, and may void your Apple warranty.

Armed with knowledge and information, you should now be better able to make an independent and informed choice of your own.

No, mainly because there isn’t any such thing.

If by change you mean a screen PROTECTOR, that’s a personal choice. I don’t find them necessary.

As other end users like you, we respond here based on our experiences and observations. Mine:

We have an iPad 2 still in light use, purchased in 2012. It has been used by four grandkids, has worn out two Apple covers, and is "well traveled." In spite of all this, the screen remains defect-free. It has never worn a screen protector. Even the coating that LotusPilot mentions remains intact.

We have owned five newer iPads without screen protectors since, and none have suffered any screen damage.

If you expect hard use and contact from potentially abrasive substances then you may want to consider a screen protector. Otherwise it’s a waste of money.