Calm, science-backed apps for focused living.
ZinZinTech is an independent app studio from the Netherlands. We build privacy-first productivity tools — local-first, no accounts, no ads. Ever.
Meet Focus4LifeOur apps
Focus4Life
Focus, backed by science.
A Pomodoro timer and task planner that helps you focus without guilt. Grow a zen garden as you work, see where your time really goes — and keep every byte of your data on your own device.
What we believe
Local-first
Your data lives on your device — not on our servers. We don't even have servers. No accounts, no cloud, no sign-ups.
Backed by science
Our focus methods are rooted in research — Pomodoro intervals, deep work, ultradian rhythms — not in streaks designed to make you feel guilty.
No ads, ever
No ads, no tracking, no analytics. We make apps for people, not for advertisers — your attention belongs to you.
Contact
Questions, feedback, or need help with one of our apps? Email us at phan.business.nl@gmail.com — we read everything. You can also visit our support page.