Find the Edge in Every Line
Every player prop, every book, on one screen — ranked by where a player's recent hit rate beats the price the book is offering.
Every Book, One Screen
Compare the same prop across every book we cover, side by side — no tab-hopping.
Hover to pause · more books as we add them
The edge, flagged for you
When a player's recent hit rate beats the book's price by a real margin, Flagline raises a green flag and shows the exact edge percentage. No guessing which lines are worth a look.
Recent form, four ways
See how often a player has cleared the line over their last 5, 10, or 20 games — and the full season. Switch the window and every rate, edge, and rank updates instantly.
Every game, on a chart
Open any player to see their last games as a bar chart, with today's line drawn across it — bars turn green when they cleared it and red when they didn't. The story at a glance.
Sort to your angle
Filter by market, set a minimum edge, flip to green-flags-only, and re-sort by any window. Find the exact slice of the slate you want in a couple of taps.
One plan. Everything.
Start with a 7-day free trial. Cancel anytime. Billing launches soon — the app is open to explore right now.
- MLB & NFL green flags & edge %
- L5 / L10 / L20 / Season hit rates
- Every book on one screen
- Player deep-dive charts
- Filtering & sorting by edge
- MLS lines & prices
- DFS apps (PrizePicks, Underdog)coming soon