Months after its launch, Apple's Vision Pro headset is facing challenges in its adoption rate compared to the iPad. With only a tenth of the number of apps available for the iPad when it debuted, the Vision Pro is struggling to attract customers in Europe as the company searches for a "killer app" to drive sales of the $3,500 device. Market analysts predict slower sales for the Vision Pro in the coming years compared to the iPad. Competition from Meta's Quest headsets and the lack of major app developers like Google and Amazon contributing to the Vision Pro are hindering its success. Apple has halted work on a high-end version of the headset, focusing instead on a more affordable model. Overall, the Vision Pro is facing difficulties in gaining traction in the market, reflecting a broader trend of challenges for Apple in the AR/VR space.