Comparison

Blackjack 21! vs River Duel

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Blackjack 21!

Experience the thrill of Blackjack with this free casino-style card game. Enjoy authentic Las Vegas rules, customizable tables, and detailed stat tracking. Learn to play with helpful hints and master the game with advanced options like Double Down and Splits.

Highlights
  • Free to play
  • Las Vegas rules
  • HD graphics and table customization
  • Stat tracking
  • Double Down, Splits, Insurance, Surrender
  • Deck shuffle animation
  • Customizable options
Features
Read full description

Do you love Blackjack? Play the best FREE Blackjack game on the app store! - Jump right in and play Blackjack completely free! - Popular Las Vegas rules just like at the casino. - Beautiful table customizations with HD graphics. - Easy, simple to learn controls make this the sleekest Blackjack available. - Stat tracking shows your performance over time. - Double Down, Splits, Insurance and Surrender for an authentic Blackjack experience. - Deck shuffle animation lets you know when the deck is being reshuffled. - Tons of chip denominations from singles all the way to millions! - Customization options including decks, tables, face card style, hints, music, sfx, surrender. - Informative help screen for those who don't already know how to play Blackjack. The current game has hints enabled by default. This will highlight the suggested move based on basic Blackjack strategy. If you want to turn this off, toggle the "Move Advice" setting in the menu. We'll be adding some awesome new features to Blackjack soon, so stay tuned! Thanks for playing!! For fast and friendly support, email us at contact@maplemedia.io. We would love to hear from you!

About

River Duel

Features
Read full description

Welcome to River Duel, the definitive 1v1 strategy card game designed for competitive minds. Forget luck—this is a battle of wits, timing, and tactical supremacy. THE GAME Face off against opponents in a fast-paced duel where every decision counts. You start with two secret cards and must combine them with five shared community cards to form the strongest combination. Will you play aggressively to pressure your rival, or defend your resources and wait for the perfect moment to strike? PURE STRATEGY River Duel transforms classic card mechanics into a pure tactical battle. Manage your "Stack" wisely. Decide when to Pass, when to Cover, and when to Increase the pressure. Reading your opponent's moves is just as important as the cards you hold. KEY FEATURES: • Online Multiplayer: Challenge players worldwide using Game Center matchmaking. Climb the leaderboards and prove your skill. • Local Wireless Play: Play face-to-face with a friend nearby using Bluetooth/Wi-Fi. No internet required! • Fair Play: No pay-to-win mechanics. Victory is determined solely by your ability to analyze the board and outplay the challenger. • Customizable Experience: Adjust game speed, starting resources, and level duration to create your perfect match setup. HOW TO PLAY: 1. Round 1: Receive your two private cards and assess your strategy. 2. The Reveal: Watch as shared community cards are revealed across the subsequent Rounds. 3. The Tactics: Choose your move. Knock to stay safe, Cover to match the opponent, or Increase to challenge for the round's score. 4. Showdown: Reveal your hand. The strongest combination takes the victory! Are you ready to enter the arena? Download River Duel today and show the world who the true card master is.

Screenshots

Blackjack 21!4 screens
River Duel4 screens

Verdict

The call

The clearest difference is in-app purchases: River Duel at none against Blackjack 21!'s 5. River Duel also leads on ads (none vs shown). Blackjack 21!'s advantage is iOS requirement (15.0 vs 26.2). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Blackjack 21! sells 5 one-off in-app purchases. River Duel asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Blackjack 21! versus River Duel: the parameters behind the verdict, then further details
ParameterBlackjack 21!River Duel
PriceFreeFree
Rating4.6 (6.1K ratings) — better—
Positive reviews71.7% of reviews—
Number of ratings6.1K — better—
Update frequencyEvery 3 months—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size209 MB17 MB
Age rating17+4+
DeveloperDo More Mobile, LLC.VINCENZO CARAVELLO

Bugs and requests

Blackjack 21!

Reported bugs

4 issues
  • Crashes after updates
  • Inability to close some ads
  • Incorrect payout for split hands
  • Disappearing chip balances

Requested features

5 requests
  • Multiple deck support
  • Option to walk away after winning
  • Multiplayer mode
  • More betting options
  • Improved card draw randomization

River Duel

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Blackjack 21!

One-time5
  • Blackjack 21 - 35,000 Chips$4.99
  • Black Jack Premium Upgrade$6.99
  • Blackjack 21 - 100,000 Chips$9.99
Show 2 more
  • Blackjack 21 - 250,000 Chips$19.99
  • Blackjack 21 - 600,000 chips!$39.99
None

River Duel

No in-app purchases

Questions

Is Blackjack 21! free?
Blackjack 21! is free to download, with in-app purchases available.
Is River Duel free?
River Duel is free to download, with no in-app purchases.
Do Blackjack 21! or River Duel have ads?
Blackjack 21! shows ads; River Duel does not.

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