Printory

As a 3D printing hobbyist, I understood the inventory chaos firsthand — dozens of filament spools across different materials, colors, and brands tracked in spreadsheets that quickly became outdated. The pain point was acute: starting a print only to discover an empty spool, or wasting time searching bins for the right color. I built Printory to solve this with a frictionless mobile workflow: scan a QR code, see inventory status, done.

The architecture prioritized reusability from day one. I abstracted core patterns — data models, UI components, state management — anticipating that inventory tracking logic could adapt to other domains. Real-device testing revealed insights desktop prototypes could never capture: camera permissions, scanning angles, lighting conditions, and latency. I iterated rapidly on the scanning experience, optimizing QR detection and adding visual feedback, pushing success rate to 98%. Testing whether QR code interaction felt natural through rapid prototyping revealed critical insights about camera workflow expectations.

After two months of iteration, Printory entered closed testing on Google Play with 12 active users. More importantly, the reusable component architecture became the foundation for HydroMate and Verdant Lab — both adapted in just 3 days — validating that investing in reusable patterns from day one compounds returns across future products.