Capture signals, hunches, and lessons with a single keystroke. Build a personal library of notes and sources you can draw on with perfect recall — so you're ready for whatever comes your way while building your business.
Download for MacYour ideas don't wait. A customer call, a competitor's pricing page, a podcast on the run — anything can be the signal that becomes next quarter's wedge. Captured in a keystroke, sourced automatically, accumulated into the references you point to when the decision arrives.
On a call. Deep in research. Mid-podcast. Highlight what matters, hit the shortcut, and you're back to it.
Leo automatically saves the context of your notes — article URLs, podcast timestamps, video frames, page numbers. So you can take quick scribbles in the middle of the work, and revisit the full context when you sit down to think.
Collect signals, hunches, and lessons over months and across sources. The signal you caught last quarter is still there this one — sourced, searchable, and ready to draw on. Months of inputs become the references you point to when the decision shows up.
Ask across everything you've collected — what's the pattern, what's the thesis, what does the evidence actually say — and build the narrative you'll point to when it counts. Use Leo's built-in model, or connect it to your favourite LLM.
Collect the observations, frustrations, and "why has no one solved this" moments that might become the thing you build. Months of small signals add up to the wedge you'll point to when you commit.
Watch how the people you'd build for actually behave — what they complain about, what they hack together, what they pay for instead. Capture the moments that reveal the real job, not the one they'd describe in an interview.
Study the players already in the market you might enter. Track who's serving this customer, what they charge, and where the gaps sit. Articles, pricing pages, founder interviews — captured at the source.
Work through the podcasts, essays, and interviews shaping how you'd actually do this. Save the quotes, frameworks, and moments that shifted your thinking — sourced automatically.
Sharpen the language for what you're building — the one-liner, the explanation that finally lands. Tie each iteration to the reaction or reading that prompted it.
Argue the case on the page. Build a running record of the evidence, the reasoning, and the calls that survive the morning — so when the decision arrives, the conviction is already earned.
Edison's Menlo Park lab kept roughly 3,500 notebooks — five million pages of experiments, sketches, and dead ends. He logged everything because the pattern of failure was the only way to find the path forward. The phonograph, the carbon filament, and 1,093 patents trace back to those pages.
Ford carried "jot books" his whole career — small pocket notebooks for ideas, expense tallies, and turns of phrase. The pages that survive show him obsessing over inches and ounces. The Model T, the most-produced vehicle of its century, came out of the same obsession.
Before Kitty Hawk, the Wrights spent four years filling notebooks with wind-tunnel data, sketches of wings, and corrections to the prevailing aerodynamic tables. The first powered flight wasn't a moment of inspiration — it was the last entry in a methodical log that ran from 1899 to that December morning in 1903.
Disney filled story-sketchbooks for his films — pencil thumbnails, dialogue snippets, music cues. The 1934 sketchbook for Snow White ran to several volumes; he showed it to investors before any animation existed. The studio was sold on the strength of the notebook.
At sixteen, Rockefeller bought a small notebook for ten cents and called it "Ledger A." He recorded every cent earned, spent, and given to charity in it for the rest of his life. The same accounting discipline ran through Standard Oil decades later — every barrel, every refinery, every cost line, tracked the way he'd first tracked his own dimes.
In 1868, Carnegie wrote himself a private memo laying out a plan: retire by thirty-five, give away his wealth, devote his life to letters. He kept the page. The Gospel of Wealth essay came twenty years later, and the libraries followed — the second life he'd sketched out for himself on a single sheet.
Bell's experimental notebook page from March 10, 1876 — now at the Library of Congress — holds the first sketch of the telephone and the words "Mr. Watson, come here. I want to see you." The notebooks that followed tracked his work on aeronautics, the photophone, and the education of the deaf.
