Demid Tishin reviewedApple ARKitA framework to create Augmented Reality experiences for iOS
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Pros: 

Good plane recognition and object positioning, well-calibrated visual inertial odometry

Cons: 

Can have issues in poor lighting or plain backgrounds. Needs looking around first to detect flat surfaces.

We're implementing ARKit scenes into Episode 2 of our Victorian detective adventure Silent Streets: https://youtu.be/n6xY0p-IjC4

Apple's tech is two heads above the conventional simplistic AR like Vuforia (which was used in Silent Streets Episode 1).

Demid Tishin has used this product for one month.