You've Spent Years Building Your Dynasty.
Stop Guessing and Start Dominating.
The definitive Fantasy GM Operating System, predictive draft engine, and transaction ledger — built exclusively for Sleeper dynasty leagues.
What brings you here?
Data Integrations & Trusted Partners
Real Managers. Real Dominance.
"Dynasty Decoder saved our league's 6-year history when we migrated to Sleeper. Every championship, every rivalry, every legendary trade — all preserved."
"I used to spend hours in spreadsheets before every trade. Now I check the War Room and know exactly where I stand in 30 seconds."
"My league-mates hate me now. Dynasty Decoder shows me trades they don't even know are lopsided. Best $5/month I've ever spent on fantasy."
Managing a Dynasty Empire shouldn't require a master's degree in spreadsheets.
Trade Anxiety
That sinking feeling when you check KTC after a trade and realize you got completely fleeced by a league mate.
Lost History
Losing years of league history, championships, and bitter rivalries because Sleeper doesn't preserve data easily.
Wasted Time
Spending 10+ hours a week in custom excel sheets calculating roster strength instead of actually enjoying the NFL games.
Built by Dynasty Addicts Who Got Tired of Losing Trades
We've been in your shoes — agonizing over trades, losing years of league history, and spending hours in spreadsheets instead of actually enjoying the game. Dynasty Decoder was built because we needed it ourselves. Now it's yours.
See Dynasty Decoder in Action
League History Vault
Every season, every trade, every champion — permanently archived.
War Room Analytics
See your roster's true strength and championship window at a glance.
Trade Validator
Real-time KTC community values evaluated alongside your roster data.
Unfair Advantage in 3 Simple Steps
Connect Sleeper
Enter your Sleeper Username. No passwords or complicated setups required.
Let the Decoder Analyze
Our algorithm instantly connects to APIs to decode your league's history.
Gain the Edge
Enter the War Room and unlock real competitive advantage.
Simple, Transparent Pricing
Start free. Upgrade when you're ready to dominate.
Free
- Connect 1 Sleeper league
- Basic league history view
- Limited trade validator (3 trades/week)
- League standings & records
Pro
- Everything in Free, plus:
- Full GM OS analytics
- Unlimited trade validator
- Complete league history vault
- Roster strength visualization
- Championship window projections
- Multi-league dashboard
- Priority support
Executive
- Everything in Pro, plus:
- ✦Portfolio Health Dashboard
- ✦Player Concentration Risk Map
- ✦Unified Draft Pick Inventory
- ✦Cross-League Performance Metrics
- ✦Executive Strategy Reports
7-day free trial on Pro. No credit card required. Cancel anytime.
Every week without it...
- Trades You're Losing:Without real-time market data alongside your roster, you're guessing. Your league-mates who ARE using analytics? They're not.
- History That's Disappearing:Every season that passes without archiving is another year of rivalries, champions, and memories lost forever.
- Time You're Wasting:Hours in spreadsheets that could be spent actually managing your roster and enjoying Sunday football.
Imagine This...
Walking into every trade negotiation knowing exactly what your players are worth. Seeing your championship window mapped out for the next three seasons. Having your league's complete history — every champion, every rivalry, every legendary draft pick — beautifully preserved and shareable.
That's not a fantasy. That's Dynasty Decoder.
Free forever. No credit card. Setup in 60 seconds.