Know if you're good or just lucky.
Brierly logs every bet with its edge after Kalshi's fee, fills in the closing price, and checks whether your fair probabilities hold up. Wins and losses are noisy. Calibration and closing line value aren't.
No card needed. $12 a month or $99 a year after the trial, or go Pro now.
Free calculators
What the log tells you
Edge after fees
Every bet scored against your 3-point bar (or your own), using Kalshi's fee formula.
Closing line value
Did the price move your way before the game? Beating the close is the fastest sign of real edge.
Calibration
When you say 60%, does it hit 60% of the time? Brierly groups your bets and shows you, with a Brier score.
Actual vs. expected
Your real P/L next to what your fair probabilities predicted, so a hot streak can't fool you.
Pricing
Free trial
$0 for 7 days
Everything in Pro, no card needed. Your log stays readable afterwards.
Start free trialPro monthly
$12 / month
Unlimited log, closing line value and calibration reports. Cancel any time.
Go Pro monthly