The log.
Your real marginal vs effective rate — not the bracket myth.
OPEN →Click the days you would take off. Weekends and holidays fill in around them, and each stretch shows how long the break really is.
OPEN →What your fund's expense ratio quietly costs you over the decades.
OPEN →How many years until your savings cover your expenses for good.
OPEN →The order to fill your accounts: match, HSA, Roth IRA, rest of the 401k, then Roth 401k catch-up, compared against 401k-only.
OPEN →Every payoff strategy, ranked by what it really costs you.
OPEN →A portable toolkit that turns Claude Code and Codex into a structured team: workflows from brainstorm to deploy, specialist roles, domain skills, and a memory that carries across sessions. Drop it into any project.
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Field service software for solo tradespeople. A customer scans your card, you do the job, they get the invoice, you get paid.
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A self-hosted crypto portfolio and technical-analysis engine. It pulls prices from CoinGecko into local SQLite, computes the indicators itself, and renders an offline HTML dashboard. No cloud, no accounts, no telemetry.
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A tachometer for video. A lightweight Chrome extension that sets a default playback speed on every site, with a speed gauge, per-site memory, keyboard shortcuts and optional YouTube cleanup. Free, open source, and it sends nothing anywhere.
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A USB stick that runs a real offline AI. Plug it into any Windows, Mac or Linux laptop and chat with Gemma 4: no install, no internet, no GPU. This repo is the recipe that builds the stick.
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The personal OS this site runs on. Money, fitness, freedom, tech and media in one edge app, with every number live and every feature reachable by agents through an API.
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Things I made for fun.
Tools, apps, and experiments. The full system lives behind login.
- docs: say React Router 8 in skills, homepage stack block and tech stack list
- feat: homepage calculator grid is built from the registry, most-run first
- fix: homepage ticker shows private-repo commit messages
- fix: homepage activity badge and ticker follow all tracked repos
- feat: add identity and policy JSON files; remove obsolete LICENSE file
The calculators are free.
Who built this.
One engineer. Every number live, every commit public.
Dominic Baca. Senior engineer, 10+ years shipping production systems — solo. I built Domdhi.OS because freedom's a math problem: most people never run the numbers, so the numbers run them. Most finance advice won't show its math; most apps bury the one number that matters under forty that don't.
So I built my own — money, fitness, freedom — calculated honestly and running live. No team. No roadmap theater. No dashboard with 47 features I'll never open. Every number's live, every commit's public — even the ugly ones. All in, or not in; 200% or 0%: beat the salary grind on math I can defend — then hand the whole system to anyone grinding the same exit.