What I enjoyed about this novel:
The story resonated with me due to its similarity to "Black Tech Internet Cafe." I appreciated the concept where the main character shares Earth culture in his new surroundings. The introduction of various products and observing the public's reactions were engaging.
Dislikes:
I found it unrealistic that the market wasn't affected by the constant consumption of high-grade spirit stones during each upgrade. This lack of noticeable impact became repetitive as the plot followed a predictable pattern: app release, skepticism, popularity, revenue, leveling up, villain interference, conflict, conversation with the female companion. After around chapter 300, I skimmed over fight scenes and interactions with the harem, focusing more on the impact of the protagonist's new products on others.