Why this exists
Korean finance calculators are scattered, ad-heavy, mobile-broken, ignore Korean tax, or have no way to share results. trovetool exists to solve all of that in one place.
Operating principles
- **Light** — every tool works on 320px mobile.
- **Accurate** — Korean tax (15.4% interest, 22% capital gains) and inflation baked in.
- **Safe** — input never leaves the browser. All math runs client-side.
- **Persistent** — at least one new tool per month, and existing tools stay maintained.
Operator
HengSsg — a Korean backend/web developer with ERP experience at Douzone. trovetool is operated solo, leveraging finance domain knowledge.
Tech stack
- Next.js 16 (App Router) + React 19 + TypeScript
- Tailwind CSS v4 + Recharts
- Vercel hosting + Cloudflare DNS
- Static generation (SSG) — fast LCP, low operating cost
Contact
Send suggestions, bug reports, or tool requests via Contact or GitHub Issues. Contact / GitHub