Operated by the Resorts World New York City land-casino, the app will allow players in the state to place wagers across a wide range of sports.
New customers using the app will also have access to a risk-free bet of up to $500.
Resorts World already had a presence in the New York sports betting market via a retail sportsbook facility at its Resorts World Catskills site in the state.
“This is something our players and sports enthusiasts have wanted for a long time and we’re excited to say Resorts World New York now has mobile sports betting,” Genting Americas president Robert DeSalvio said.
“From our experience in having a sportsbook in both our Catskills and Las Vegas properties, we were able to take feedback from our players and deliver what New Yorkers really want in a mobile sports betting app.
“By partnering with an innovative product and technology focused company in PointsBet as our platform provider, we believe Resorts WorldBet will only add to our success.”
Resorts World becomes the eighth operator to launch in New York since the state opened its legal online sports betting market on 8 January this year.
Caesars Sportsbook, DraftKings, FanDuel and Rush Street Interactive went live on opening day, while BetMGM was permitted to launch from 17 January. PointsBet followed on 25 January, then WynnBet in February.
Last month, it was also revealed that players in New York wagered just under $2.00bn in the first 30 days since the state launched its legal market. A total of $1.98bn was bet during the period between 8 January and 6 February, according to the New York State Gaming Commission.