Blackjack ∙ vs TwentyOne
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Blackjack ∙
Experience the thrill of blackjack in a realistic casino setting. Compete against the dealer, aiming to reach 21 or a higher score without busting. Travel to famous global casinos and utilize classic blackjack actions like hit, stand, double down, split, and surrender.
- Realistic casino gameplay
- Global casino locations
- Classic blackjack actions
- Fair card dealing algorithm
- Insurance and payouts
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Welcome to the #1 Blackjack! Play as in real casinos and beat the dealer to win tons of dollars!Blackjack, also known as twenty-one, is the most widely played casino banking game in the world. RULES AND OPTIONS Blackjack is a card game between a player competing against the dealer. It is played with two or more decks of 52 cards. The object of the game is to beat the dealer in one of the following ways: - Get a BlackJack on the player's first two cards (21 points), without a dealer blackjack. - Reach a final score higher than the dealer without exceeding 21 - Let the dealer draw additional cards until his or her hand exceeds 21. CASINOS Travel all around the world and play in the most popular casinos: - Casino of Las Vegas - Casino of Paris - Casino of Macau - Casino of London - Casino of Monte Carlo - Casino of The Bahamas FEATURES - Blackjack pays 3:2 - Dealer must stand on a 17 and draw to 16 - Insurance pays 2:1 - Hit, Stand, Double Down, Split or Surrender IMPORTANT NOTICE This game contains an algorithm that strictly respects Blackjack rules. Cards are shuffled and dealt in the exact casino way to ensure a 100% fair gameplay. In-app purchases cost real money - be responsible when playing games including money. This Blackjack game is a gambling simulation game, it neither involves real money gambling, nor provides any means to win real money or prize. CONTACT Please feel free to contact us at support@greenpandagames.com if you encounter any problem regarding this app. For the latest news and updates on Green Panda Games: LIKE us on Facebook https://www.facebook.com/Green-Panda-Games-1696022237280275/ Follow us on Twitter @greenpandagames Visit us at: http://www.greenpandagames.com
TwentyOne
Master blackjack with a minimalist trainer that teaches mathematically correct plays for every hand. Practice with customizable rules and track your progress. Unlock advanced features like expected value and card counting with a one-time purchase.
- Basic strategy chart for all hands
- Customizable table rules
- Practice modes for hands and pairs
- Performance tracking
- Expected value calculations
- Card counting trainer (Hi-Lo system)
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TwentyOne is a clean, focused blackjack basic-strategy trainer. Learn the mathematically correct play for every hand, then drill it until it's second nature — in a calm, minimalist interface with no ads and no clutter. WHY TWENTYONE Basic strategy is the proven, optimal way to play every blackjack hand. TwentyOne doesn't just show you a chart — it computes the correct play for your exact table rules and helps you commit it to memory through fast, focused practice. THE STRATEGY CHART • The complete chart for hard totals, soft hands, and pairs • Color-coded for Hit, Stand, Double, Split, and Surrender • Tap any cell to see the expected value behind every option • Recomputes instantly when you change the rules PRACTICE THAT STICKS • Deal a hand, choose your action, and see the correct play right away • Modes: Random, Hard Totals, Soft Hands, Pairs, and Most Missed • "Most Missed" automatically resurfaces the hands you get wrong • Track your accuracy, streak, and performance by hand type PLAYS BY YOUR RULES Real tables differ, and so does correct strategy. Configure: • Number of decks (2, 4, 6, or 8) • Dealer hits or stands on soft 17 (H17 / S17) • Double after split, double rules, and late surrender • Resplit aces, hit split aces, and more The chart and every practice answer adjust automatically. TWENTYONE PRO Take your training further with a single one-time purchase — no subscriptions, no ads: • Expected value on every hand — see the full EV breakdown behind your decision after each practice hand, not just in the chart • Card Counting Trainer — master the Hi-Lo system with four focused drills: – Card Values: flash through the +1 / 0 / −1 tags until they're instant – Running Count: keep an accurate count as cards are dealt – Deck Countdown: race through a full deck down to zero – True Count: convert running count to true count on the fly Everything else in TwentyOne is free. MADE TO LOOK GOOD • Minimalist design with crisp, simple cards • Full light and dark mode • Three app icons to choose from • No ads, no accounts, no tracking — works offline for all training TwentyOne is for study and entertainment. It teaches optimal decision-making and involves no real-money play and no wagering.
Screenshots
Verdict
The clearest difference is review sentiment: TwentyOne at 100% against Blackjack ∙'s 56%. TwentyOne also leads on ads (none vs shown) and rating (5.0 vs 4.7). Blackjack ∙'s advantage is ratings volume (50K vs 3) and chart position (#138 vs unranked). On price, in-app purchases, monetization model 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
Both are free to download. Blackjack ∙ sells 10 one-off in-app purchases and TwentyOne sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
TwentyOne holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Blackjack ∙ has 50K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 56% of Blackjack ∙'s written reviews are positive against 100% of TwentyOne's.
Blackjack ∙ ships an update every 3 weeks, TwentyOne every 9 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | Blackjack ∙ | TwentyOne |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (50K ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 56.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 50K — better | 3 |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | #138 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 165 MB | 2 MB |
| Age rating | 17+ | 17+ |
| Developer | Solitaire Games Studio | Justin Taddeo |
Customer experience
Blackjack ∙
TwentyOne
Bugs and requests
Blackjack ∙
Reported bugs
4 issues- Notification for free chips not working
- App crashes after playing for a while
- Inconsistent card dealing
- Dealer gets unrealistic hands
Requested features
6 requests- Add option to track longest win/loss streak
- Increase bet limits
- Add option to play multiple hands
- Improve card shuffling algorithm
- Add option to turn off dealer voice
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- Add cross-device sync for progress
TwentyOne
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Blackjack ∙
- Pile of 5,000 chips$1.99
- Bankrupt in Las Vegas : Pile of 5000 chips$1.99
- Pile of chips (5k) - Plane to Las Vegas$1.99
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- Pile of chips (5k) - Private jet to Paris$1.99
- Gobelet of 30,000 chips$4.99
- SPECIAL Bucket of 100,000 chips$4.99
- Gobelet of chips (30k) - Bankrupt in Paris$4.99
- Lucky Day pack (60k chips)$4.99
- Bucket of 100,000 chips$14.99
- Briefcase of 200,000 chips$24.99
TwentyOne
- TwentyOne Pro$4.99









