Which one to choose for Image Target based application in Unity. Vuforia, ARkit or Arcore?

I am looking to develop an image target based application and upload in Appstore and Playstore.My application will recognize the image target and on top of it a model comes and plays animation.

The problem is I am not sure how many image targets it will have.Consider the application that I am doing this for a book(New images may be added monthly for many editions).There will be many images(image target).Does the above Vuforia,ARkit and ARcore support unlimited image targets.Is there a pricing plan.If free I prefer using that.

 

In my research I have come to the determination that Vuforia is the best way to work with Image Targets for various reasons. It seems to accept more targets and tracks them better than the alternatives. It is easier overall if you are building for both IOS and Android, It's free if you can accept the watermark and the limitation of 1'000 recos and 1,000 targets. The $99 per month plan sounds like what you will want for what you described. I was thinking Unitys AR foundation was going to be ideal but it currently lacks support for image targets for IOS, also ARCore while, superior in marker-less applications, seems inferior in marker/target applications. Hope that helps.

 

ARKit/ARCore both are free versions and both support image tracking. I am not aware of any target limitations on these platforms.
I have a project which has 2 identical scenes but one is with ARCore and the other one is with ARKit. Main testing I do on Android because it takes almost no time to build an .apk file and final testing on iPad pro.