Nakajima Ryoma's profile on Product Hunt

About

Solo developer & digital wellness advocate from Japan 🇯🇵 Former system engineer at Wacom (worked on Samsung Galaxy Note pen input tech). Now based in rural Japan as a Regional Revitalization Coordinator, leading 27+ community projects with AI & digital tools. By night, I'm an indie iOS maker. I tried every app blocker out there — uninstalled them all within a week. They all felt like punishment. So I built Tomosu: instead of blocking apps, it keeps everything quiet by default and lets you unlock only what you need. I believe productivity isn't about doing more — it's about being intentional. I combine AI tools with habit design to help people perform at their best. Building Tomosu 🕯️| Preparing to launch my startup 🚀 Let's connect — especially if you've ever rage-quit a screen time app 😄

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Gemologist

Tastemaker

Gone streaking

Gone streaking 5

Maker History

TomosuLock your apps by default to improve your digital wellbeing
Mar 2026

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Joined Product HuntJanuary 7th, 2026

Forums

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8mo ago

Tomosu - Lock your apps by default to improve your digital wellbeing

Every wellbeing app punishes you. Tomosu does the opposite. Instead of blocking apps, Tomosu restricts everything by default — notifications, badges, gone. Start a Focus Session to unlock only what you need. 🔒 All apps locked by default. Calm is the starting point. 🎯 Focus Sessions with presets (Work, Study, Creative) 🏋️ SNS Challenge — shake your phone before scrolling 💰 Focus earns coins. Longer SNS use = fewer coins. 🔐 Apple Screen Time API. Data stays on device. Free. No ads. No guilt.

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8mo ago

Hey Product Hunt! 👋 I'm 42 years old dad, dreamer, builder

I'm Ion, turning 42 years old in just 5 days, and I've decided this is the year I stop just dreaming and start building. I'm a dad of two amazing kids, always full of ideas sometimes too many but I've finally learned that the real magic happens when you actually share them with the world!

So I'm launching on March 1, a fun browser game, perfect for competitive friends, family game nights, or anyone who loves head-to-head challenges.

A 2-player or 3-player game on the same device that brings people closer.

I m here to learn, support other makers, and meet good people.

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8mo ago

Featured

We shipped the first agent-native computer. Then Perplexity announced the same vision.

Saw Aravind's post yesterday about Perplexity's new computer.

Got me thinking: we launched Happycapy - the 1st agent-native computer here on Feb 11 (beta was Jan 27). Grateful @rajiv_ayyangar and the PH community witnessed it from the start.