We build tools
engineers trust.
NexusDigitalLabs is an independent, privacy-first software project. We engineer minimalist web utilities, articles, and browser games — calculation tools run fully client-side so your inputs stay in the browser unless you opt into sync or sign-in.
Maintained in the open on github.com/NexusDigitalLabs.
Mission
Utility over complexity.
The web doesn't need more bloated SaaS platforms. It needs sharp, single-purpose tools that do exactly what they say — fast, privately, and without unnecessary friction.
Most tools run entirely in your browser. Fuel Tracker can sync via an anonymous code with no account. Sign-in is optional: link a garage, sync game scores, or enable Invoice/Debt cloud drafts when you want restore-across-devices.
Principles
Privacy by default
Client-side tools keep your work private. Optional accounts use auth cookies only when you sign in. Advertising cookies, if ads are enabled, are disclosed in the Privacy Policy.
Zero-bloat architecture
React, Tailwind CSS, and nothing extra. No unnecessary dependencies or client-side state engines.
Performance as a feature
Every tool targets a perfect Lighthouse score. Fast load, fast interaction, no layout shift.
Accessible by design
Core tools are free to use with no account required. Built lean so access stays wide.
What we value
The way we build.
Speed first
Every millisecond matters. We optimise for LCP, INP, and CLS from the first line of code — not after the fact.
Privacy as architecture
Privacy isn't bolted on — it's the foundation. Most tools process your inputs in the browser; optional cloud features are opt-in and documented.
Minimal footprint
React and Tailwind CSS only. The codebase stays readable, auditable, and dependency-minimal.
Keyboard accessible
Every tool is fully navigable by keyboard with clear focus states. Accessibility is non-negotiable.
Tech stack
Intentionally lean.
The public site is a Next.js App Router app written in TypeScript and React, styled with Tailwind CSS, and hosted on Vercel. Optional accounts, Fuel Tracker sync, and page-view counters use Supabase (Postgres + Auth). Most calculators and generators never send your document or number inputs to our servers.
TypeScript
Typed app & API routes
React
Server + Client components
Next.js
App Router on Vercel
Tailwind CSS
Utility-first styling
Supabase
Auth, Postgres, optional sync
Vercel
Static + serverless hosting
FAQ
Common questions.
Who built NexusDigitalLabs?
NexusDigitalLabs is an independent software project. The tools, articles, and games are built and maintained by developers shipping from the NexusDigitalLabs GitHub organization (github.com/NexusDigitalLabs). We focus on useful, auditable utilities without unnecessary complexity.
Are the tools free to use?
Yes — core tools are free to use with no account required. Optional sign-in unlocks extras such as linking a Fuel Tracker garage to your account. We may introduce premium features later, but core functionality stays free.
Do you collect any user data?
Most tools process everything in your browser. Fuel Tracker stores vehicles and fill-ups under a sync code you choose (no email required). If you sign in, we store account profile data (email, display name, avatar) via Supabase Auth, optional garage linking, optional game high-score sync, and optional Invoice/Debt cloud drafts you explicitly enable. Contact form messages are emailed to us via our provider. Analytics (Umami), page counters, and ads (where shown) are disclosed in the Privacy Policy.
Can I suggest a tool or feature?
Yes. Use the Contact page to send a suggestion. We build what we find genuinely useful, so real-world requests from real users carry a lot of weight in what gets prioritised next.
How do I report a bug or request a feature?
Use the Contact page to send us a message. We review every submission and prioritise based on real-world impact and frequency of request.
Why not use a popular framework like WordPress or Webflow?
WordPress and Webflow solve the wrong problem for what we're building. Managed CMSs add complexity, cookies, plugin dependencies, and performance overhead that are simply unnecessary for a site built around lightweight, client-side tools. Next.js and React give us full control with zero compromise on speed or privacy.
Got feedback or a feature idea?
Suggestions, bug reports, and feature ideas are always welcome. Reach out anytime.