Successful use case of AR?

I am aware that large crop and tech enthusiasts have championed augmented reality, but I find it difficult to think of a “killer app” that offers users a consistent user experience.

Could someone please explain?

You’re approaching this incorrectly.

AR should not be the main focus but rather a feature within a purpose-driven app. The aim of an app should be to fulfill a user’s needs, not just to highlight AR technology.
While some excellent apps incorporate AR, it does not define them as AR apps. Consider apps like Ikea’s furniture preview, star chart apps for identifying constellations, or shoe shopping apps with AR try-ons. AR is a tool, not the objective.

The concept of a “killer app” in augmented reality (AR) refers to an application or use case that demonstrates the true potential and benefits of AR technology, often leading to widespread adoption and setting a standard for user experience. In AR, a killer app would offer users a compelling and consistent experience that integrates digital elements seamlessly into their real-world environment, enhancing daily tasks, entertainment, or productivity in a revolutionary way. Examples could include AR applications that allow for interactive virtual product try-ons in retail, immersive educational experiences, real-time navigation overlays, or collaborative work environments where digital information is overlaid on physical objects. The challenge lies in developing AR applications that not only leverage the technology effectively but also provide intuitive and reliable user interactions, thereby driving broader acceptance and use among consumers and businesses alike.

I have been using the Vuforia engine for enterprise AR to drive metrics that are valuable in asset-intensive industries. I don’t really care what the tech is, I want to create value in my industry and AR can do that. I believe it’s important to consider how reliability engineering addresses the needs of various industries. Companies prioritize key performance indicators (KPIs), and augmented reality (AR) has the potential to greatly enhance multiple aspects of their operations.