# Blackjack 21: online casino — Blackjack 21 & Slot machines > Blackjack card game with tournaments, daily rewards, and slot machine elements. (iPhone/iPad app by CYBERNAUTICA s.r.o..) - Source: https://appshunter.io/ios/app/blackjack-21-online-casino/id1536928166 (this page in markdown: same URL + `.md`) - Developer: [CYBERNAUTICA s.r.o.](https://appshunter.io/developer/1535190074) - Category: Games, Card, Casino - Price: Free with in-app purchases - Rating: 4.60/5 from 146 App Store ratings - Age rating: 17+ - Requires: iOS 15.0 · 205 MB - Languages: American English - Released: 2020-11-12 - Data updated: 2026-08-25 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/blackjack-21-online-casino/id1536928166/reviews.md ## What is Blackjack 21? Looking for new Casino Games? BlackJack card game is here to offer breathtaking card gaming fun. From global players and amazing new tournaments to daily free chips and weekly rewards, this blackjack online is all about offering upbeat card gaming fun. Master your blackjack skills by practicing on online slots and participate in global tournaments when you are ready. Wondering how to play BlackJack 21? All you need to do is beat the dealer by having a card total that doesn’t exceed 21! Play the game now! Who doesn’t love a card game offering exciting new rewards? The new casino slot game offers huge free chip stacks for all the players. You can not only get to enjoy free diamonds but also greeting chips once you spin to win the mega wheel. Win chips and diamonds with a free spin that unlocks after every 24 hours! Want to play Classic slot game online anonymously? Switch to the Guest game mode and play Diamond league tournaments and win exciting new rings collection. Complete daily missions and reserve your spot in top 100 weekly players. Want to play Casino slot game in different cities? The game features multiple contents including the majestic cities of Atlantic City, Macau city, Singapore and the Carnival Last legend casino in Hawaii. You can also choose to double down in Bellagio in Las Vegas. Become the best blackjack player in the world as you appeal to the exciting graphics of different continents in this game. Create profiles and show off your achievements to other players! You can also view other people’s profiles to stay inspired. Become the king of BlackJack and impress everyone around you! Features of Blackjack 21: online casino – Blackjack 21 & Slots Free • Simple and easy casino slot games UI/UX • Appealing Vegas Casino game layout with striking design elements • Smooth and responsive spin to win controls for streamlined gaming fun • Win free huge chip stacks to enjoy free diamonds • Spin to win free diamonds and greeting chips • Option to play blackjack anonymously by switching to guest mode • Create and customize blackjack card game profiles and level up as you win • View other players profiles and stay inspired • Complete exciting daily challenges and stay on top of your game • Weekly top 100 winners selection for exciting gaming experience Are you ready to become the global blackjack online king? If yes, this game is all you need. Download and play Blackjack 21: online casino – Blackjack 21 & Slots Free today! This casino game is intended for an adult audience (21+) for amusement purposes only and does not offer "real money" gambling, or an opportunity to win real money or prizes based on game play. Playing or success in this game does not imply future success at "real money" gambling. Created with love by CYBERNAUTICA Terms of Use: https://cybernautica.cz/terms-of-service/ Indonesia (IGRS): 18+ ## Key features - Global tournaments - Daily free chips and weekly rewards - Practice blackjack skills - Play slot machines - Anonymous guest mode - Create and customize profiles - Complete daily challenges ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Chips pack 1 | $2.99 | one-time | | Chips pack 2 | $4.99 | one-time | | Chips pack 3 | $9.99 | one-time | | Chips pack 3 instant buy | $9.99 | one-time | | Diamonds pack 1 | $2.99 | one-time | | Diamonds pack 2 | $4.99 | one-time | | Golden Egg 1 | $1.99 | one-time | | Golden Egg 2 | $9.99 | one-time | | Golden Egg 3 | $29.99 | one-time | | WELCOME PACKAGE | $4.99 | one-time | | Cash Smash 1 30Off | $1.99 | one-time | | Ticket pack Medium | $9.99 | one-time | | Ticket pack Small Spin | $4.99 | one-time | | Ticket pack Small | $4.99 | one-time | | Chips pack 4 | $19.99 | one-time | | Chips pack 5 | $49.99 | one-time | | Diamonds pack 3 | $9.99 | one-time | | ALL STAR DEAL | $9.99 | one-time | | Diamonds pack 4 | $19.99 | one-time | ## Frequently asked questions about Blackjack 21 ### Does Blackjack 21 have ads? Yes, Blackjack 21 contains advertisements. The app is free to download and play, with options for in-app purchases. ### What is the gameplay in Blackjack 21? The core gameplay involves beating the dealer by having a card total that does not exceed 21. The game also features slot machines and tournaments. ### Can I play Blackjack 21 offline? The provided description focuses on online tournaments and global players, suggesting an internet connection is required for full functionality. Specific offline modes are not detailed. ### How often is Blackjack 21 updated? The app was last updated on March 5, 2026, indicating a recent update. Specific update frequency is not detailed in the provided data. ### What are the in-app purchases in Blackjack 21? The app offers in-app purchases, including opportunities to win free diamonds and greeting chips through spins and rewards. These are for amusement purposes only. ### Is Blackjack 21 suitable for all ages? No, this casino game is intended for an adult audience (21+) for amusement purposes only and does not offer real money gambling. ### What devices support Blackjack 21? Blackjack 21 is supported on iPhone, iPad, and iPod devices. ### What is the user rating for Blackjack 21? Blackjack 21 has a rating of 4.6 stars from 142 ratings, indicating generally positive user sentiment. ## Version history (last 5 releases) ### 5.5 — 2026-06-26 This update includes bug fixes and other improvements. ### 5.4 — 2026-04-18 This update includes bug fixes and other improvements. ### 5.3 — 2026-03-05 This update includes bug fixes and other improvements. ### 5.2 — 2025-10-15 This update includes bug fixes and other improvements. ### 5.0 — 2025-01-29 This update includes bug fixes and other improvements. ## Apps similar to Blackjack 21 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Blackjack Pro — 21 Card Games](https://appshunter.io/ios/app/blackjack-pro-21-card-games/id6446876662) | 4.4 (74) | Free | Games | | [Blackjack - Gambling Simulator](https://appshunter.io/ios/app/blackjack-gambling-simulator/id690050081) | 4.3 (105) | Free | Games | | [Blazing Bets Blackjack 21](https://appshunter.io/ios/app/blazing-bets-blackjack-21/id1448859632) | 4.6 (359) | Free | Games | | [BlackJack by Murka: 21 Classic](https://appshunter.io/ios/app/blackjack-by-murka-21-classic/id1578668915) | 4.7 (4,092) | Free | Games | | [Blackjack 21 - Casino Games](https://appshunter.io/ios/app/blackjack-21-casino-games/id1641063629) | 4.6 (147) | Free | Games | | [Blackjack Championship](https://appshunter.io/ios/app/blackjack-championship/id1495771886) | 4.7 (2,063) | Free | Games | ## More apps by CYBERNAUTICA s.r.o. - [Piece together: 3D puzzle game](https://appshunter.io/ios/app/piece-together-3d-puzzle-game/id1535190072) - [Casino Slots: Slot Machines](https://appshunter.io/ios/app/casino-slots-slot-machines/id1540093781) - [Golden Slots: Casino games](https://appshunter.io/ios/app/golden-slots-casino-games/id1542776902) - [Slots online: Fruit Machines](https://appshunter.io/ios/app/slots-online-fruit-machines/id1548458349) - [Slots: 77777 Lucky Slots](https://appshunter.io/ios/app/slots-77777-lucky-slots/id1552015973) All apps by CYBERNAUTICA s.r.o.: https://appshunter.io/developer/1535190074 ## Related topics [21 online](https://appshunter.io/ios/topics/21-online) · [blackjack online](https://appshunter.io/ios/topics/blackjack-online) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*