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Build your ultimate NBA team and compete against others in live simulations. Win real stakes based on accurate basketball engine predictions. Track your performance and cash out your winnings.
✓Build all-time NBA five lineups
✓Compete live against other users
✓Win real stakes
✓Accurate basketball simulation engine (RONDO)
✓Live game play-out and scoring
✓Cash out winnings
✓Replay and track game history
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What's New in Simmer
1.1.1
November 4, 2026
New players: deposit $15, get $50. A quicker first game, clearer results on your matches, and the usual head-to-head ball knowledge.
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FAQ
What is Simmer?
Simmer is a sports app where you build an all-time NBA five lineup and compete live against other users. You can win real stakes based on the outcome of simulated games powered by the RONDO engine.
How accurate is the RONDO engine in Simmer?
The RONDO engine is built on 30 million real plays from 60,000 real games, weighed by machine learning. It calls winners of modern NBA games with supermajority accuracy, meaning what works in real basketball generally works in Simmer.
Can I play Simmer for free?
Yes, your first game is free. The app is free to download and play, but it does contain advertisements. You can also deposit funds to compete for real stakes.
Who can play Simmer?
You must be 18 or older, have a US phone number, provide your legal name and date of birth, and be located in a state where Simmer is available. Device location is checked before deposits, match entries, and withdrawals.
How does Simmer handle payments and withdrawals?
Payments are processed by a payment partner, and identity verification is required before your first withdrawal. You can cash out your winnings or use them to play again.
Does Simmer have ads?
Yes, Simmer contains advertisements. This is part of its monetization model, alongside the ability to compete for real stakes.
What devices does Simmer support?
Simmer is available on iPhone, iPad, and iPod. It was last updated on November 4, 2026, with version 1.1.1.
How is my lineup strategy evaluated in Simmer?
Matchups are crucial in Simmer. The engine considers player size, team dynamics, and how different player combinations perform against each other. Player prices also fluctuate based on popularity, rewarding unique lineup choices.