Question about HP Active Data Pen

As Korsika05 has already answered, you don't need any software, the easiest way is to check at HP whether this model is listed as an accessory for your notebook (accessories, mice and keyboards) or, for example, the new version (https://www.hp.com/ch-de...).
The COMPATIBILITY is listed with every HP pen (https://www.hp.com/ch-de...).

It doesn't need an app it just needs to be the right pen, even with HP there are different ones, it's not so easy to find the right one.