Notion is an empty room. You can build anything in it, which means you have to build everything in it — and most setups collapse under their own weight within three months. Nexus comes pre-built with strong opinions about what to track and how the modules connect. You're trading flexibility for coherence. If you want a system that works on day one and still works on day 365, that's the trade.

In a Supabase database — encrypted at rest, hosted in the EU. You can export everything as JSON whenever you want. You can delete your account and your data goes with it. There's no analytics layer harvesting your patterns to sell ads. The free tier doesn't even sync to the cloud — your data stays in your browser.

Not yet. The current build is a fully responsive web app that works on phone, tablet, and desktop. A native iOS app is on the roadmap for after public launch. Add it to your home screen as a PWA in the meantime — it's nearly indistinguishable from a real app.

A solo developer, building in public. No VC, no team, no roadmap dictated by investors. The project lives or dies on whether the people using it find it indispensable. That's a feature, not a bug — small teams build sharper products.

Fair concern. Two protections: every user can export everything as JSON at any time, so your data is never trapped. And the entire app is a single HTML file — even if the cloud goes away, you can run your last export on any browser, forever. We've designed for the worst case explicitly.

No. Nexus is intentionally single-player. Adding collaboration would change the product into something else — and there are dozens of team tools already. The whole pitch is that this is your private operating system, not a shared workspace.