Over the weekend I needed to go to something like a general meeting, so on the train there and back I used Codex for Mobile to fix several bugs in my own project and add features with SpecKit. Here are some rough impressions. To start with the conclusion, it feels very usable.
Codex has expanded in many directions for customization, including custom prompts, MCP, and Skills. Among the newer features in this area are Marketplace and Plugin. This time, I will create a Marketplace locally and place a plugin in it.
People call turning 30 a major milestone, and they say the same about turning 40. Here, the milestone means turning 50. Today, March 11, I finally turned 50. For the past 15 years, it has become my birthday routine to watch special programs about the Great East Japan Earthquake, look back on the past, and think about my own future.
Notion has helped me a great deal. After using it for nearly five years, it had become like air, naturally sitting at the center of my life to the point that opening Notion was the first thing I did after waking up. So why did I decide to migrate? A major reason was the change happening in my own environment.
I did not write a best-buys entry in 2024, but if I had, it would probably have been the Vision Pro. That personal interest continued, and in 2025 I bought many accessories and related items around XR. So here are my top five best buys of 2025.