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THE SOLVER

DFS optimizer, contest simulator and bankroll tracker built with Establish The Run

Lineup optimizerSimulatorBankroll trackerBest ball tool
Visit THE SOLVER(opens in a new tab)Free, or $24.99/mo

About THE SOLVER

THE SOLVER is a web toolkit for salary-cap DFS that pairs a multi-sport lineup optimizer with a separate contest simulator for NFL and golf. Users can upload their own projections or sync partner projections and ownership (notably Establish The Run's), then export up to 1,000 lineups per build. It also offers a free bankroll tracker, a free Best Ball Explorer and a paid best-ball draft assistant. The company was started in 2022 by Establish The Run veterans and software developers.

Features

  • Builds 1 to 1,000 lineups per run with stacking, correlation and exposure rules
  • Custom projection upload or ETR projection/ownership sync
  • Single and multi-lineup contest sims with sim ROI and cash rate (NFL, golf)
  • Lineup Builder for up to 3,000 lineups
  • Late swap support
  • Free bankroll tracker for DK, FD, Yahoo and SuperDraft history
  • Best ball draft assistant browser extension

Sports and sites covered

Works with

  • DraftKings
  • FanDuel
  • Yahoo
  • Underdog
  • Drafters

Pricing

Free, or $24.99/mo

Optimizer from $24.99/mo per sport (NFL $37.99), all sports $77.99/mo; simulator $25.99-$224.99/mo; bankroll tracker and Best Ball Explorer free

Prices as listed on thesolver.com when we checked. Confirm current pricing on their site.

Compare THE SOLVER

Alternatives to THE SOLVER

Compare all alternatives

  • SaberSim

    Simulation-driven DFS optimizer with projections, ownership, late swap and contest sims

    Lineup optimizerNFLCFBNBACBBWNBA+10DraftKings, FanDuel, Yahoo, OwnersBox
    From $97/mo

  • DFS Crunch

    Multi-site DFS optimizer with entry assignment, late swap and contest sim metrics

    Lineup optimizerNBAWNBACBBNFLCFB+9DraftKings, FanDuel, Yahoo
    From $50/wk

  • DFS Hero

    Automated DFS engine with optimizer, contest sims, scheduled builds and backtesting

    Lineup optimizerNFLNBAMLBNHLGolf+9DraftKings, FanDuel
    From $24.95/wk

  • LineupIQ

    Single-plan DFS optimizer and contest simulator for DraftKings and FanDuel, 16 sports

    Lineup optimizerNFLCFBMLBGolfMMA+9DraftKings, FanDuel
    From $50/mo

  • DFS Army

    All-sport DFS membership with Domination Station optimizer, projections and coaching

    Lineup optimizerNFLCFBNBACBBWNBA+10DraftKings, FanDuel, PrizePicks, Underdog
    From $9.99/wk

  • Fantasy Cruncher

    DFS optimizer plus Lineup Rewind contest review and Lineup Study of top players' builds

    Lineup optimizerNFLCFBNBACBBWNBA+10DraftKings, FanDuel, Yahoo, OwnersBox
    From $4.95/wk

Sources and corrections

Last checked Oct 3, 2026. We build every listing from the sources below and recheck them regularly. If something about THE SOLVER has changed, let us know.