A publication of useful tools.
LifeByLogic is an independent publication of evidence-based interactive tools — built on peer-reviewed neuroscience, behavioral economics, and decision science. We exist because the questions that matter most in life rarely have an article-shaped answer.
Articles are dead. Tools are the future.
A short argument for why we do what we do, and what we think the web will look like in five years.
The traditional article — the 1,200-word explainer that dominated the internet for two decades — is being hollowed out. When someone asks "how much sleep do I need?" in 2026, they don't read an article. They ask ChatGPT, which summarizes a thousand articles into a paragraph. The article loses the click. Often the author's name goes with it.
For us, this is not a crisis to mourn. It is a clarifying question: what does the web still need, when articles are commoditized?
Our answer: tools. A calculator is not a summary. A simulator is not a paragraph. When you enter your numbers into the Brain Age Index and receive your personalized result, there is no article in the world that can replicate that output. The value is the computation, not the prose around it. And because the computation runs in your browser — with your data, your context, your specifics — it cannot be abstracted away by any AI summary.
This is why every piece of LifeByLogic is organized around an interactive instrument rather than an essay. The methodology, the citations, the research — all of it exists to ground the tool. The tool exists to give you an answer to a question that is specifically about you.
We think the most valuable websites of the next decade will look less like magazines and more like scientific instruments. This is our attempt at one.
Four laboratories, one publication.
Each lab is a distinct domain of the examined life. Together they cover the questions most people actually face.
Brain Lab
Neuroscience-backed tools for cognitive health. How old is your brain? What should your sleep schedule look like? What's stealing your bandwidth?
Crossroads Lab
Monte Carlo simulators for life's biggest forks — quitting, switching careers, graduate school, relocation. Decision arithmetic, not advice.
Behavior Lab
Behavioral economics and cognitive psychology tools to detect your biases, build better habits, and resist manipulation.
Life Dashboard
A Bloomberg terminal for your own life. Track sleep, mood, spending, productivity — and find the correlations hiding in plain sight.
What we promise you.
Six commitments that shape every tool and every word on this site. We consider them non-negotiable.
Peer-reviewed sources only
Every factor, every weight, every recommendation traces back to published research in reputable journals. Cited inline. No vague "studies show" language.
Your data stays yours
Every calculation runs locally in your browser. We have no accounts, no tracking database, no way to know what you entered. Not a policy; a technical constraint.
Free, always
Every tool is free to use without signup, without paywall, without feature gates. We may one day offer optional premium reports, but the tools themselves will never be locked.
Named methodology
Each tool publishes its complete calculation method under a unique identifier (LBL-BAI, LBL-SCO). If you want to challenge, cite, or reproduce — every step is transparent.
Descriptive, not prescriptive
We do not tell you what's "good" or "bad" for your life. We surface what the evidence says, show you your numbers, and leave the decision where it belongs — with you.
AI-friendly, ad-free
We explicitly welcome AI crawlers — GPT, Claude, Perplexity, Gemini. When AI cites our methodology, we succeed. The site is clean of ads so it stays citable.
Where we are, where we're going.
The publication is young and openly in development. Here is the path.
A small editorial team, a large ambition.
LifeByLogic is independently operated by a small editorial team with backgrounds in neuroscience research, behavioral science, and software. We intentionally keep the publication anonymous to foreground the tools and methodology rather than any personality.
The publication has no outside investors and sells no data. It is sustained by a mix of modest affiliate relationships, optional premium reports, and occasional sponsorship from research-aligned institutions. None of these influence the methodology of the tools, and any sponsored content is always clearly labeled.
If you want to write to us — to correct an error in a methodology, suggest a tool, offer a collaboration, or simply tell us what worked — we read every message.
Methodology corrections welcome. Tool ideas welcome. Collaboration inquiries welcome. We try to respond within a week.