Kognitiv Spark vs. Vuforia Engine

Definetely when needing an image target based AR experience, I'd go with Vuforia Engine, the implementation is pretty straightforward (at least when using UNITY SDK), it is well documented and there are plenty of examples to start with. I wouldn't recommend it yet for tracking objects or environments if it is for commercial purposes, because it tends to fail from time to time from my experience.

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• Performance when using unity (the device heats up).
• Image marker works fine but surface detection tends to fail still.
• Even though there's a free plan, there are many alternatives now where they cost less or they're even free.

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