Keep us afloat.
Tight Lines is built and run for free by Brackish & Co as an educational tool for students and educators. There are no ads, no paywalls, and no plans to add them — and we never sell data or take a cut of your trades. If the math here clicked for you, this is how you help keep the lights on.
Drop a line
Donations cover hosting, Kalshi data costs, and the time it takes to keep the curriculum and the market engine honest. Any amount helps — and nothing is expected. If you'd rather not, that's fine too; the app stays free either way.
Send a note like “Tight Lines” with it so I know where it landed. Donations are not tax-deductible.
Scholarships
If you're a student and the cost of even a small Kalshi stake is a barrier to practicing with real money, reach out. A portion of donations goes to starter scholarships so people who need a hand can get one. No essay, no proof-of-need gauntlet — just tell me where you are in your learning and what would help.
Reach out through the Feedback button inside the app, or include “scholarship” in your Venmo/Zelle note and I'll get back to you.
Why this stays free
Prediction-market literacy shouldn't sit behind a subscription. Tight Lines exists to show the work — EV, Kelly, portfolio math — so the next person who looks at a market can read it for themselves. Keeping it free and ad-free is the whole point; support is what makes that possible, not a fee for entry.