Okay, so this is going to be a brief chapter on the Add-Ons tab in Picsart. Please note that I don't really use this tab, but just bare with me anyways.
If you didn't already know, the Add-Ons tab is the first one there. This is what it looks like when you click on it.
And so on and so forth.
To make the long story short, Add-Ons are anything and everything you can add on and buy, but they come in packs and cost money (although a few are free). When making graphics, you won't really need this tab, but hey, if you feel like buying some and using them, your choice!
those are the different section of add-ons you can buy.
Hopefully this has explained the Add-Ons Section for you all! If you have any questions, please don't hesitate to ask me :))