From fusion dynamics to biometric systems — the method is the same. Understand the system deeply enough, and you stop reacting. You start predicting. That's what I build toward.
About
Solo developer building data-driven tools across mathematics, physics and engineering. Builder of Praenox, and available for hire.
Data is the only proof. Not intuition, not assumption — measured signal, verified output. Every tool I ship is built on that constraint.
Projects
The Praenox family of adaptive sound apps. Tap a project to open it.
Biometric sound synthesis. HRV and recovery data drives ambient audio tuned to your physiological state.
Fusion engine, predictive protocol control, stability mode, and sleep debt detection. One-time purchase, lifetime licence.
Everything in Pro plus QA runner, history simulator, sound signature verification, and full runtime diagnostics.
Adaptive soundscapes for your day: focus, gaming, learning, calm, creativity, energy, recharge and unwind. Free to start, and a one-time lifetime licence unlocks unlimited use.
The complete adaptive Praenox experience for Android: continuous Fusion monitoring, contextual learning, mobile playback, and a seven-day recovery outlook.
Your data, plus a 365-day simulation of it. Aurum already knows your nights. Aurum Horizon turns that history into the full picture: where you stand, what your data links to your recovery, how your sound sessions compare, and three simulated versions of your next year, each backed by 500 runs of your own data.
Full comparison & details → praenox.com
Services
You are looking at the proof. praenox.com, horizon.praenox.com and arlejtech.com are designed, wired and measured the same way I build for clients. Prices are in the Shop.
Custom counters on your own pages track the path of every visit, so you see exactly where people stop and what breaks, instead of guessing. Built and deployed through the same GitHub and Cloudflare workflow as your site.
A page designed around your product, not a template. Layout, type, motion and mobile behaviour all built to fit what you sell.
Domain, DNS, SSL and deployment connected, so your site goes live when you push and stays online without manual work.
You have an idea, but too much work, too much information, or no clear list of what a complete page needs. I map the whole workflow with you.
Tools
Software I built for my own sites and now sell to others.
A private visitor tracker that runs in your own Cloudflare account, plus a step-by-step wizard that scans your site, builds the files and guides you through GitHub, Cloudflare and wiring it into your page.
Who it is for
Solo makers, indie developers and small site owners who see traffic numbers in Cloudflare or other analytics but cannot tell what is real, especially if you offer downloads, apps or services.
Why
Standard analytics also count bots and scanners, so the numbers can look better than reality. This tracker flags likely bots, shows what real people click and how far they read, and counts downloads that never touch your page. Your data stays in your own account: no cookies, no monthly fee.
Needs a free Cloudflare account, a GitHub account and Node.js 18 or newer on your computer to run the wizard.
See price in the ShopShop
Prices in one place. Services are quoted per project; the hourly rate is the starting point.
Services
The final price depends on your plan, the implementation and how complex your requirements are. Want to talk first? Email me and I will answer with a clear estimate. I usually reply within minutes, and always within 24 hours.
Tools
Praenox apps