Ethereum founder Vitalik Buterin shared his experience testing various mobile offline local knowledge applications. He noted that these apps have significantly improved compared to the one he attempted to build two months prior. However, he also observed that they are still slower and less effective at answering difficult questions than models running on laptops. Buterin found the apps weakest in specialized travel-related queries, such as finding vegan restaurants in a specific city. He expressed optimism for continued improvements, hoping for a future where users can access any facts about the world without internet access.