Black Jack!! vs Deck 21
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Black Jack!!
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Enjoy Blackjack anytime, anywhere! This is a simple and stylish Blackjack card game. Just tap "Start" to deal your cards, flip them over to check your hand, and draw more cards to get as close to 21 as you can. When you're ready, tap "Fight" to reveal your total. Features: - Simple, intuitive controls anyone can enjoy - Beautiful card animations - Aces are automatically counted as 1 or 11 for you - Play as many rounds as you like, completely free Perfect for a quick break or killing some time. Try your luck and aim for 21!
Deck 21
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"Deck 21" is a strategic reimagining of the classic blackjack, featuring a new mechanic that transforms each round into a dynamic challenge. In addition to the traditional rules of trying to reach 21 points without going over, cards have special abilities that can increase or decrease their value, changing the course of the game at any time. This mechanic adds a layer of strategy and unpredictability, making every decision crucial. Players will need to think beyond the basics, considering not only the cards they have, but also the effects they can activate to influence the outcome. With intuitive and dynamic gameplay, "Deck 21" promises an immersive experience for those looking for an innovative and challenging card game. In addition to the single-player mode, "Deck 21" features competitive multiplayer, allowing players to challenge their friends in strategic matches and compete to see who can master the card variations and emerge victorious. With intuitive and dynamic gameplay, "Deck 21" promises an immersive experience for those looking for an innovative and challenging card game.
Screenshots
Verdict
The clearest difference is ads: Deck 21 at none against Black Jack!!'s shown. Deck 21 also leads on update cadence (daily vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Black Jack!! ships an update every 3 weeks, Deck 21 daily. The most recent releases landed on September 2, 2026 and September 9, 2026 respectively.
| Parameter | Black Jack!! | Deck 21 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Daily โ better |
| Ads | Yes | No โ better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.3 | 12.0 โ better |
| Further details โ not scored | ||
| Size | 29 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | yuya kanbetsunawa | Andre Salvador |
In-app purchases
Black Jack!!
No in-app purchases
Deck 21
No in-app purchases
Questions
Is Black Jack!! free?
Is Deck 21 free?
Do Black Jack!! or Deck 21 have ads?
Which is updated more often, Black Jack!! or Deck 21?
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