About
I'm Guglielmo Vaccaro, a startup obsessive. I build products from zero, with no investors, from wherever I happen to be.
The short version
- Italian startup obsessive, with a background in physics.
- I have built five products: two are live, one I sold, two I shut down.
- Today I build Startupage and Calally, both bootstrapped: no round, no investors.
- I don't have an office. I work between mountains, coastlines and cities I don't know.
- Every day I publish a video about what I'm building and what I'm getting wrong.
I never know what to put under occupation
I'm not a developer, though I write code. I'm not a marketer, though I handle distribution. I'm not a designer, though I draw the interfaces. I'm not an analyst, though I read the numbers every day.
I do a bit of everything, and in almost all of it I'm probably worse than someone who only does that one thing. What I am is obsessed with startups: someone with a single fixation, take an idea and drag it into the real world until it has an impact on someone.
I came from physics
That's not a résumé flourish. Physics teaches you that an idea is worth nothing until you test it, that data doesn't negotiate, and that being wrong isn't a moral failure but a step in the process.
Five years ago I stopped studying systems and started building them, and I haven't changed direction since. Hypothesis, test, data, iteration: it's the same method, applied to a product instead of an experiment.
I build without investors
Startupage is a platform connecting founders, investors and talent through verified profiles and a marketplace of real opportunities: hiring, co-founder search, open rounds, companies for sale. It came from a problem I lived myself, back when finding useful information in the startup world meant hours spent verifying things nobody had verified.
Calally is a nutrition tracking app that lets you talk instead of filling in fields. Describe what you ate, the app logs it, a coach guides you with serious nutritional parameters, from basal metabolic rate to rates of weight change that actually make sense.
Neither has taken money. No round, no board, no five year deck written to convince someone. Just product, users and revenue when it comes. It's slower, it's harder, and it's the only way I can work without feeling caged.
What I have built
In order: the live ones first, then the one I sold, then the ones I shut down.
- StartupageActiveSolo Founder · Oct 2025 - PresentThe platform connecting founders, investors and talent.
- CalAllyActiveSolo Founder · Sept 2025 - PresentNutrition tracking you speak to, with a coach guiding you.
- BitzumaExitedCEO & Co-Founder · May 2025 - Oct 2025Crypto news, analysis and interviews, published daily.
- Sp3llbound StudiosShut downCEO & Co-Founder · Jun 2024 - May 2025Web3 gaming studio.
- 21BJShut downCo-Founder · Apr 2023 - May 2025Fantasy card game for mobile, a casino with no real gambling.
I work from wherever
I don't have an office and I don't want one. Building alone has one enormous advantage: where you are stops mattering. I spend my time between mountains, coastlines and cities I don't know, and I work from there, with a backpack and a decent connection.
I train BJJ, I surf, I go into the mountains, I practice historical combat. These aren't hobbies parked outside of work: the same head that keeps you on a hard problem for months is the one that puts you back on the mat after you've been beaten.
I share everything, mistakes included
Every day I publish a video about what I'm building. What worked and, far more often, what didn't. My best performing series is literally called “stupid things I did during my first startup”, and it is exactly what it sounds like.
I don't sell the dream of the founder who made it. I fail on camera so you can skip that part. It's also why the projects I shut down get the same space on this site as the live ones.
What I don't do
- No calls. If you have something to tell me, email works better and I actually read it.
- No consulting. Selling my time by the hour is the fastest way to have none left for the products.
- No rounds and no investors. Bootstrapped isn't a waiting room, it's the model.
- No income promises and no guru tone. If something didn't work, I write that down.
Frequently asked questions
- Who is Guglielmo Vaccaro?
- An Italian startup obsessive with a background in physics. He builds products alone and without investors, including Startupage and Calally, and shares every stage of the process publicly, failures included.
- What is Startupage?
- A platform connecting founders, investors and talent through verified profiles and a marketplace of real opportunities: hiring, co-founder search, open rounds and companies for sale.
- What is Calally?
- A nutrition tracking app where you describe meals by voice or text instead of filling in fields, and a coach guides you with evidence based nutritional parameters.
- Can you build a startup without investors?
- Yes. It means growing more slowly and funding yourself from revenue instead of capital, in exchange for full control over the product, the timing and the decisions.
- Can you build a startup on your own?
- Yes, and that's what I do. It takes leverage: the right tools, automation, organic distribution and the discipline to work on few things at a time.
- What does building in public mean?
- Openly sharing the process, including mistakes, numbers and wrong decisions, instead of showing only the final result.
Get in touch
No calls, no forms. This is the email and I actually read it:
