Best New Betting Apps in the US: 6 Sites Worth Downloading Right Now

Rebet, Fliff , Betr, Underdog, Dabble and Smacktok are among the best new betting apps around. Take a look and pick the best for you.

A licensed sportsbook opening its doors for the first time is rare. What actually shows up under “new betting apps” searches these days is a different animal: sweepstakes-model social sportsbooks and real-money pick’em apps that don’t need a state betting license to operate, which is exactly why they’ve spread into states where DraftKings and FanDuel still can’t.

Six of them are worth a look right now, and none of them require you to live in a regulated sports betting state to play.

They split into two camps. Rebet and Fliff run on the sweepstakes model, you play with virtual coins, and a second currency (Rebet Cash, Fliff Cash) is what actually converts to a prize. Betr, Underdog, Dabble and Smacktok are pick’em-style daily fantasy apps, where you’re picking player props against a projection line rather than betting odds.

Neither category is a traditional sportsbook, and that distinction matters more than any single promo headline, it’s covered in more detail further down. Make sure to take a look at our best NFL betting sites.

Compare the Best New Betting Apps at a Glance

App	Category	Welcome Offer	Promo Code
Rebet	Sweepstakes social sportsbook	$100 bonus in free play	MRGAMB
Fliff	Sweepstakes social sportsbook	Spend $5, get $50 in free play, plus a 100% match up to $100	MRGAMB
Betr	Pick’em daily fantasy	100 BC no-sweat on your first entry	MRGAMB
Underdog	Pick’em daily fantasy	Play $5, get $50 in bonus entries	GAM
Dabble	Pick’em daily fantasy	Play $5, get $10	MISTGA
Smacktok	Social pick’em contests	100% deposit match up to $50	MRGAMBLE

Offers are subject to change and vary by state, confirm the live terms on each app before you sign up.

The Sweepstakes Social Sportsbooks

Rebet: Best for Peer-to-Peer Challenges

Rebet started as a Dartmouth student project and has grown into one of the more social-first names in the category, built around peer-to-peer contests rather than just picking against a set line.

You make sports predictions and play casino-style titles using Rebet Coins for casual play, while Rebet Cash, earned through promos rather than bought outright, is the side that can turn into a real prize under the sweepstakes rules. The appeal is the community layer: creating your own contest terms and challenging friends directly, instead of just tailing a projection.

• Rebet Welcome Offer: Get a $100 bonus in free play
• Promo Code: MRGAMB

Fliff: Best for Everyday Rewards and Variety

Fliff runs the same sweepstakes structure as Rebet but leans harder into daily habit-building login rewards, constant challenges, and a broad sports menu that stretches from the major US leagues into soccer, MMA and esports.

Fliff Coins are the free-to-play currency; Fliff Cash is the sweepstakes side that can redeem for a prize once you clear identity verification. It’s not available in every state (Washington is excluded, and a handful of others sit out the sweepstakes side specifically), so it’s worth a quick state check before installing.

• Fliff Welcome Offer: Spend $5, get $50 in free play + 100% match on your first purchase
• Promo Code: MRGAMB

The Pick’em and Daily Fantasy Apps

Betr: Best for High-Multiplier Lineups

Betr grew out of Jake Paul and Joey Levy’s sports media company and now runs Betr Picks alongside a social sportsbook and, in select states, a licensed real-money sportsbook.

Betr Picks is the piece most people are downloading it for: pick two to ten player props as “more” or “less,” with payouts advertised up to 10,000x on a full house. It’s live in roughly three dozen states plus DC for the fantasy product, which is a wider footprint than most licensed books can claim.

• Betr Welcome Offer: 100 BC no-sweat on your first entry
• Promo Code: MRGAMB

Underdog: Best for Established Pick’em Reliability

Underdog is one of the two most downloaded fantasy apps in the country and has been through more regulatory back-and-forth than almost any competitor, which is worth knowing before you sign up. Several states pushed Underdog to retire its player-vs-house format in favor of Pick’em Champions, a peer-to-peer version where you’re scored against other entrants rather than a fixed line.

Which format you get depends on your state, so check what’s actually live near you rather than assuming the original Pick’em mode is available everywhere.

• Underdog Welcome Offer: Play $5, get $50 in bonus entries
• Promo Code: GAM

Dabble: Best for a Social Feed on Every Pick

Dabble built its name as a licensed sportsbook in Australia before bringing a modified, DFS-only version to the US in 2023.

The US app keeps the feature that makes the Australian original stand out: an activity feed, closer to Instagram than a betting app, where you can follow other players, friends, ex-athletes, creators, and copy their entries directly. NFL offers tend to get more competitive once the season is in full swing, so the current welcome bonus is a starting point rather than the ceiling.

• Dabble Welcome Offer: Play $5, get $10
• Promo Code: MISTGA

Smacktok: Best for Team-Specific Communities

Smacktok is the newest name on this list and the one built most explicitly around community first, picks second. The app organizes fans into team-specific “huddles”, group chats where you can debate, trade takes and challenge other fans’ predictions before layering pick’em contests for real money on top.

It’s a narrower build than the others here, with a smaller footprint so far, but the huddle format is a genuinely different angle on the category rather than a reskin of an existing pick’em product.

• Smacktok Welcome Offer: 100% deposit match up to $50
• Promo Code: MRGAMBLE Link:

Sweepstakes App vs. Pick’em App vs. Licensed Sportsbook: What’s the Difference?

All three show up when someone searches “new sportsbooks,” but they’re not the same product, and mixing them up is the easiest way to end up disappointed by a welcome offer.

A licensed sportsbook, a BetMGM or a Caesars, holds a state gaming license, takes real-money wagers against posted odds, and is only live where that license is granted. A sweepstakes social sportsbook like Rebet or Fliff never takes a real-money wager at all; you play with virtual coins under sweepstakes promotion rules, which is the legal mechanism that lets it operate in states where sports betting itself isn’t regulated yet.

A pick’em daily fantasy app like Betr Picks, Underdog or Dabble sits in a third category again: it’s a skill contest under DFS law, where you’re picking player outcomes against a projection rather than betting a set of fixed odds, and payout structure is a multiplier on your entry rather than a bookmaker’s line.

None of that makes one category “better” than another, it just changes what you’re actually signing up for, and it’s worth knowing before you fund an account expecting sportsbook-style odds on a fantasy platform. If you want to know more read about our prediction markets promo codes.

How to Vet Any New Betting or Fantasy App Before You Join

A newer app has less of a track record than DraftKings or FanDuel, which isn’t automatically a red flag, but it does mean a few extra minutes of checking pays off.

• Confirm what it actually is. Sweepstakes app, DFS pick’em, or licensed sportsbook, the legal structure changes what states it’s available in and how winnings get paid out.
• Check your state. Availability shifts often, particularly for pick’em apps that have had to redesign their format state-by-state after regulatory pushback.
• Read the offer terms, not just the headline number. Minimum spend, playthrough requirements and expiry windows on bonus credit all shape what a welcome offer is actually worth.
• Start small. A first small entry or purchase is a reasonable way to judge how an app handles payouts and support before committing more.

Best New Betting Apps FAQs