There's a lot of useful public information out there — and almost no good way to track it over time. 3Brains is a small suite of apps that quietly do the watching for you and let you know the moment something happens. Designed to make life easier.
Free to use No signup required.
All apps let you save up to FIVE Watchlist items, no account needed.
Registering your email and password (also FREE) gives you unlimited Watchlist saves.
No ads. No games. Built on purpose to make life easier.
In App Store
Whatever happened to someone you used to know? Add them to your list and we'll let you know if anything changes.
In honor and remembrance. Find U.S. military veterans interred in our national veteran cemeteries. Free, no signup, unlimited saves.
Stay current on your players without checking. Injuries, news, and game updates across the NFL, NBA, MLB, NHL, and MLS.
Job watching across federal, private, and direct-to-employer sources. Set your filters once — we tell you when matching jobs are posted.
You book months in advance — then something changes. Watch your ship for itinerary shifts, advisories, and incidents before you sail.
You plan the trip months ahead — then the world changes. Watch your destination for advisories, incidents, and health alerts before you go.
Kalshi prediction markets without the trading screen. Save the markets you care about — Fed rates, elections, crypto, sports — and get alerted when the price moves.
There's a lot happening around you — you just don't always hear about it in time. Hazards, alerts, and natural events near where you live.
Your pantry, watching your back. Meal Watch watches official FDA recalls and tells you the moment a brand or product on your list shows up.
Track U.S. Senate and House candidates — fundraising, votes, and key filings, watched daily. Just the facts. No partisan spin.
Health alerts for the places you care about. Drug recalls, outbreaks, and environmental enforcement — public information, brought together.
The surfers you care about, watched. WSL pros, Triple Crown riders, big-wave chasers, hometown legends — bios and news, in one place.
Every 3Brains app is a progressive web app — it installs in one tap, no app store needed. Once installed, it has its own icon on your home screen, runs full-screen, and behaves just like a native app.
The app's icon will appear on your home screen alongside your native apps. Tap it to launch.
Some versions of Chrome show an automatic install banner at the bottom of the page — feel free to use that instead.
A growing platform of Watchlist Apps built around a simple observation: there's a lot of useful public information out there, and almost no easy way to track it over time.
3Brains is the work of Bill Spencer — a Honolulu-based entrepreneur, former CEO of four software companies, and former leader of the Hawaii Venture Capital Association — built in collaboration with two AI engineering partners, Claude and ChatGPT. Three brains. One mission.
Each app pulls from public sources — government recall feeds, public hazard data, sports APIs, candidate filings — and turns the act of "checking" into the act of "watching." You add what you care about. We notice when something changes. You hear about it.
No ads. No games. Built on purpose to make life easier.
Questions, feedback, partnership ideas? bspencer413@me.com.
