RosterSage
One screen for every league
Only for iPhone
Free
iPhone
Every Tuesday, a beast to hunt in each of your leagues. Name a Champion and your starters' real points wound it. On game day, the Arena shows every league live.
RosterSage is the companion app for people who take fantasy football seriously — every league on one screen, and a Sage who watches them while you don't.
But beneath your leagues, something stirs. Every Tuesday a beast surfaces in each of them, and only your real lineup can bring it down: every point your starters actually score lands as a blow.
RosterSage doesn't host your leagues. It connects to the ones you already play on Sleeper, ESPN and Yahoo and does the work a chat window can't: it watches your rosters all week and pings you before it matters.
EVERY LEAGUE, ONE SCREEN
The Sanctum is home: a card for every league, with the score and what needs you. Each opens a league page led all game week by your matchup, built like a live box score: both lineups slot by slot, your win probability, and the league's other scores in a strip.
PROACTIVE ALERTS
• A starter ruled Out or Doubtful, pushed 90 minutes before kickoff with a bench replacement, while you can still act.
• Status changes and rulings for players on your roster.
• Friday and Saturday lineup checks, a Friday game plan, and Tuesday waiver picks before claims process.
THE HUNT
Each Tuesday the Hollow King posts a bounty board. Choose a beast, name a Champion, and your starters take the field as a warband of slayers. Each beast wounds its own way: the Scaled feels only points that beat the projection, and the Swarm counts only your five lowest scorers. On game day the fight plays out in the Hunt room, hit by hit, with the Hollow King narrating, and on iPhone you feel the blows land. Let a beast escape you three times and it becomes your Nemesis.
Your best real lineup is always your best hunt. The game never changes the advice.
THE WHOLE LEAGUE HUNTS
In Sleeper and ESPN leagues, one beast stalks every team each week, joined or not, and Tuesday's card tells the group chat who slew it.
THE ARENA
When your games kick off, the Sanctum becomes the Arena: every league live at once, closest games first, with your live win probability and the Sage's play-by-play.
THE COUNCIL
Tuesday morning the Sage convenes each league: the week's crown, the heartbreaks, the most lopsided beating, and a roast of the week that was, on a card you can share with your league.
DECISION TOOLS
Start/sit with the Sage's call on every lineup slot, a lineup optimizer, win probability for your actual matchup, a trade analyzer and trade finder, and a free-agent finder, all reading your real rosters and your league's scoring. Receipts grades the Sage's calls every week, so you can check its record.
A SEASON THAT REMEMBERS YOU
The Spire is your tower, floor by floor: deeds for the calls you nailed and the disasters you survived, familiars that come to roost, the Great Hall where your league sits at one long table, the Observatory where your draft-day oaths are judged, and the Bestiary, where every beast keeps a page with your record against it.
The draft tools, a live draft assistant and mock drafts against bots, return for next season's draft.
PLATFORMS
Sleeper connects with your username, Yahoo with its own sign-in, and public ESPN leagues with a league ID. Private ESPN leagues connect once from a desktop browser, then show up on your phone.
FREE AND PREMIUM
Free, forever: your league data, news and injury alerts, live scoring on game day, your win probability and the Sage's call on every lineup slot, the Hunt, the Council, and every deed and familiar. Free runs 2 active leagues, with up to 10 connected.
Premium adds late-swap seating, the full reasoning behind every start/sit call, what each lineup change does to your win probability, complete trade and free-agent results, advanced analytics, and all 10 leagues active.
RosterSage is read-only: it never touches your lineups. It just makes sure you never miss the move that wins the week.
Support: rostersage.com/support
Privacy: rostersage.com/privacy
Connect a league in under a minute. Then go hunting.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The Hunt has its own tab. Every Tuesday the Hollow King posts a beast for each of your leagues: name a Champion, and your starters' real points wound it. The fight plays out live in the Hunt room on game day, and the verdict lands Tuesday.
The Arena: on game day the Sanctum shows every league live at once, with your live win probability and the Sage's play-by-play.
Your league page now leads with your matchup all game week, built like a live box score, with your league's other scores in a strip and a Matchup | Hunt switch at the top. Your leagues now live under Home.
Feel the fight: in the Hunt room your phone taps as the hits land, harder on a stagger, hardest on a kill.
Under the hood: Capacitor 8.5.2, ready for iOS 27, and security hardening for signing in and for connecting Yahoo.
Plus everything since 1.0: the Council's full Tuesday scroll, the Great Hall, win probability on your lineup, late-swap seating, live ESPN scores, and dozens of fixes.
The developer, Vita Vera Studios LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Vita Vera Studios LLC
- Size
- 2.6 MB
- Category
- Sports
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Cartoon or Fantasy Violence
Profanity or Crude Humor
Horror/Fear Themes
Alcohol, Tobacco, Drug Use or References
Sexual Content or Nudity
Contests
Guns or Other Weapons
- Copyright
- © 2026 Vita Vera Studios LLC