Fantasy football

Every league. One brain.

Draft boards, lineup backtests, and trade ideas — built from your actual leagues. Sleeper, ESPN, Yahoo, and CBS, one sign-in.

Open the app See how it works

The real workspace, captured on a demo league. Open yours

Supported providers

Bring your league

Four sources, one franchise rail. Every season you import stacks into a single franchise — switch years and sites without losing context.

Sleeper

Just a username — no password

Link a public Sleeper username and one sync pulls every league on the account.

Connect Sleeper

ESPN

Browser cookies

Paste your swid and espn_s2 cookies — private leagues included.

Connect ESPN

Yahoo

OAuth sign-in

Authorize with Yahoo — no password to copy, and seasons import with their native keys.

Connect Yahoo

CBS

Access token

Paste a member access token — never your password. Expired tokens are flagged, not silent.

Connect CBS

Provider credentials are encrypted at rest and tied only to your account.

Feature offerings

Built for the decision, not the feed

Draft Strategy

Simulate the draft from your real slot on a snake board that already knows your roster. Lock picks, tune risk and loss aversion, check rookie intel, and read the season story — how many weeks your starters project ahead of the field.

Draft Strategy workspace: snake draft board, ranked recommendations with reasons, and a projected season storyline

Weekly Lineup

Backtest any played week: the optimal lineup's actual points next to the lineup you started, with every mismatch flagged. Looking forward, the optimizer projects your best ten — and the waiver adds that beat your bench.

Weekly Lineup workspace: recommended lineup with projections next to the current lineup, plus acquisition targets

Trades

Proposals ranked by starter-point delta for both sides — mutual gain you can defend, not a vibe check. A what-if simulator scores your own offers before you send them.

Trade Finder workspace: trade proposals against a chosen partner with point deltas and justifications for both teams

One franchise rail — and it fits in your pocket

Sleeper, ESPN, Yahoo, and CBS seasons sit on the same rail. The workspace is the same on your phone: draft board, lineup backtests, and trades, thumb-reach included.

Sleeper Brain on a phone: draft recommendations and the picks rail in the mobile layout

Connect. Sync. Decide.

  1. 1

    Connect

    Link a Sleeper username, or sign in to ESPN, Yahoo, or CBS. Your league stays yours.

  2. 2

    Sync

    Seasons group into one franchise. Pick the year you are drafting or setting a lineup for.

  3. 3

    Decide

    Draft help, weekly lineup backtests, and trade deltas — with the numbers next to the advice.

Bring a league.

Sign in, connect a source, and open a season. The workspace is the same on your phone.

Get started