I’ve been coding for 8–9 years, but somehow I’d never shipped a real mobile app that felt “done.” So I tested a simple theory: with today’s AI tools, could I build my first React Native app from scratch with basically zero mobile dev experience… in about 24 hours? The hardest part was honestly the idea. To-do lists are boring, weather apps are overdone, and games are too ambitious. Then I landed on something I actually need: an alarm app so annoying it’s impossible to ignore—because I’m absolutely the person who hits snooze 10 times. My twist was forcing myself to solve a math problem to shut the alarm off (and without the ad-filled apps that already exist). I used Claude to brainstorm the feature details (difficulty levels, motivational messages, even a color palette), then used Stitch to generate a clean UI so I didn’t have to pretend I’m a designer. From there it was Expo + React Native chaos: setting up the environment, “vibe coding” the layout to match the design, and then fighting real bugs like dark theme styling, delete functionality, navigation not returning home after solving math, and the alarm audio refusing to stop. By the end, I had a smoother flow with fewer button clicks, difficulty levels, and a math screen that auto-returns home on the correct answer. Next steps: shipping without Expo Go, adding motivational quotes, and tracking sleep/wake/snooze data so I can actually learn how I’m behaving.