How I Built a Free Online Time Toolkit with Next.js 16 (PWA, i18n, Web Audio)

A story about building Clock-Tani — 9 free time-management tools in a single PWA, written with Next.js 16 App Router. Live at https://clock-tani.com Why I Built This I needed a pomodoro timer at work, but every option was either ad-heavy, app-only, or just ugly. Same story for world clocks, countdown timers, and interval timers. So I built them all into one place. That place is now Clock-Tani — 9 small but useful tools, no ads in the core experience, no signup required. What's Inside World Clock