Browser extensions, calculators, and spreadsheets.

Surfaces the maximum stake bet365 will accept on a bet right after you place one — use a $0.50–$1 probe to read the cap.

Adds decimal, American and fractional odds next to every Polymarket price so you can compare against traditional sportsbooks.

A clean, hand-tuned dark theme for ESPN.com — scores, articles, video pages and stat tables all themed end-to-end.

Same treatment for NBA.com — box scores, schedule pages and player profiles in a dark, readable theme.

Compares your entry odds against the closing line to measure the edge you captured.

Strips the bookmaker's margin out of a market to recover the no-vig fair odds.

Stress-test a strategy with thousands of Monte Carlo runs — see expected profit, drawdown risk, and whether your edge is skill or luck.

Sizes a follow-up bet that recovers a previous loss at a target combined return.

Computes EV per unit staked from your fair probability and the offered odds.

Calculates the hedge stake to lock in profit or split risk between two opposing prices.

Converts odds between decimal, American, fractional and implied probability in one place.

Derives implied probability from a sharp book's price by removing the vig.