Looking for a AR solution

I’m looking for a AR solution for unity that can identify and track images on a PC (surface) and mobile so I can add 3D animation on top of the tracked images in real time.

So far I’ve found a few, but I wanted to ask if anyone has experience with this topic and what plug-in they would recommend.

The ones I’ve found so far include;

Qualcomm Vuforia seemed good, but it doesn’t support windows (phone or desktop)

ARPA looked like the solution I was looking for, but I’ve tried to sign up a few times now with different email address and have received no email from them.

String looked fantastic, but has been discontinued.

Metaio also looks nice, but it seems the most expensive as well.

Any advice on this topic? This is just for a prototype idea I have so I would prefer not to have to spend thousands on something without at least a demo version.

What is your target platform for the app? iOS? Android? Or using a Webcam feed?

Sorry for the late reply, I didn’t get an email notification about your post (thought I turned that feature on)

I was hoping to get stuff working on a microsoft surface pro 2 so I could demo stuff and make tweaks at the same time, however I ended up using vuforia on a android tablet.

I did put my pro license on my surface which sort of works because vuforia will work in the editor then.

For now I think I have everything working I needed, but thanks for the reply.