On Android, Lumo often takes 10–15 seconds to become usable after opening the app. That delay really breaks momentum, especially when you just want to quickly ask something or continue a thought.

In comparison, apps like ChatGPT are available almost instantly, which makes a big difference in day-to-day use. Making Lumo start faster — or at least showing the chat UI immediately while things load in the background — would noticeably improve the experience.