A developer who once passed on $60k in NVIDIA stock now confronts the staggering opportunity cost of his decision. Using a deliberately minimalist web app, he quantifies how a $60k down payment on an apartment could have grown into tens of millions had it been invested in NVIDIA instead. The tool strips away emotional cushioning, displaying only raw numbers - a stark reminder of financial choices made years ago.

Building the app revealed unexpected technical complexity. Despite its terminal-like simplicity, the project required a Laravel backend for data validation, Alpine.js for reactivity, and WebSockets for real-time social sharing. The developer notes that creating a 'simple' interface today demands mastery of frontend/backend architectures, performance tuning, and mobile rendering - a far cry from 1990s web development.

Adding a 'Bullet Dodged' feature proved equally impactful. This mode calculates preserved capital when users almost bought assets before crashes, mirroring the emotional weight of missed gains. The developer reflects on how modern infrastructure complexity contrasts with intentional simplicity, sparking debate about whether static hosting or edge functions would better serve such minimalist tools.

The project's raw interface intentionally avoids charts or images, forcing users to confront numerical reality. With historical data normalization and split adjustments under the hood, the app serves as both personal reckoning and technical case study. Its creator invites discussion on balancing stack complexity with deliberate minimalism, while sharing his own regret - a $60k decision that could have yielded over $100 million at NVIDIA's peak.