I developed a cat allergy while staying at my parents' house. Their two cats—once my cuddle buddies—became off-limits. Daily sneezing, runny nose, itchy eyes. I couldn't even share a room with them anymore.

Determined to solve this, I dove deep into allergy research. After months of trial and error, I discovered what worked for MY specific triggers. Today? I can cuddle those cats again. That joy sparked an idea: what if an AI could guide others through this same journey, but personalized to their unique situation?

Enter Cat Allergy Buddy. Users speak their symptoms naturally—"sneezed three times after petting Fluffy"—and Dr. Catherine, our AI assistant, analyzes patterns to deliver tailored insights. No generic advice. Real solutions based on YOUR data.

The challenge? I hadn't coded an app in 10 years, focusing instead on product management. But with modern AI tools, I took the plunge—doing everything solo: research, design, backend, frontend, mobile development, even the marketing copy.

The toughest lesson? That last 10% before launch takes 50% of the effort. Every edge case, every tiny bug—they all matter when someone's health and happiness depend on your app working flawlessly.

Now, thousands can keep their beloved cats instead of rehoming them. That's worth every late night debugging.

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