Dunno. My 80k+ LOC personal life planner, with a native android app, eink display view still one shots most features/bugs I encounter. I just open a new instance let it know what I want and 5min later it's done.
Some problems AI surprised me immensely with fast, elegant efficient solutions and problem solving. I've also experienced AI doing totally absurd things that ended up taking multiple times longer than if I did it manually. Sometimes in the same project.
I've been thinking about doing something like that myself because I'm one of those people who have tried countless apps but there's always a couple deal breakers that cause me to drop the app.
I figured trying to agentically develop a planner app with the exact feature set I need would be an interesting and fun experiment.
You can see my app in action here: https://news.ycombinator.com/item?id=47119434
While I can share the code and it might make a good foundation for forks, creating one from scratch with claude's $100 subscription will take ~2-3 weeks to get it into the state you see in the video. And that is me prompting the LLM for ~30-60 minutes most days of those 2-3 weeks.
Very cool and thanks for sharing.
Prompting basic notes apps is not as exciting but I can see how people who care about that also care about it being exactly a certain way, so I think get your excitement.