About Duke
I'm Duke, and I build products solo. Every product here — the idea, the design, the code and the launch — is made by me, one step at a time.
A few principles behind my products:
- No sign-up, works right away — keep the barrier low.
- Data stays on your device — no account, no server-side you.
- Solve real, small problems — speaking up, remembering words, knowing where money goes.
- Build things that stay useful, not one-time hype.
I'm learning English myself, so I know how hard it is for an adult beginner to start speaking — that's why the English products are the part I care about most.
To learn more about my background and writing, visit my personal site: