Comparison

3 vs 21 Trainer

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

Head to head
About

3

Experience a fast-paced poker variant where strategy and skill determine your fate. Compete against over a million players worldwide, climb leaderboards, and earn daily rewards in this engaging card game.

Highlights
  • 3-stack poker gameplay
  • Online multiplayer mode
  • Super League Mode
  • Daily rewards and bonuses
  • Mini games and Lucky Spin
  • No advertisements
Features
Read full description

It's all the poker hands you know, but no need to bluff. Split 13 cards into 3 hands, stack them strongest to weakest, and beat all 3 at once. 3-Stack Poker is built for players who want to master every Poker hand combo without the mind games, or who just want a fresh spin on the poker they already know inside out. The skill here isn't reading faces - it's reading your cards: with the same 13 you're dealt, how you arrange and balance strength across all 3 hands decides whether you win big or foul out. If you love the hands but never cared for the bluffing, this is the poker made for you. Why players love it: - 100% ad-free gameplay - Focused on Poker hands arrangement skills, no negotiation and bluffing needed - Daily rewards & quests to keep every session worth it Join a global community of 2M+ players, never once bot-gaming Also known as Pusoy, Chinese Poker, or Mậu Binh - the same game you love, new name, same 3-hand challenge. Download 3-Stack Poker now and prove your hands can outsmart anyone's bluff.

About

21 Trainer

Master blackjack strategy with this trainer. Practice realistic hands, receive instant feedback on your decisions, and improve your accuracy. Ideal for beginners and experienced players looking to sharpen their skills without real-money gambling.

Highlights
  • Learn blackjack basic strategy
  • Practice realistic hands
  • Train hit, stand, split, double, surrender
  • Instant feedback on decisions
  • Improve accuracy
  • Build faster decision-making
Read full description

Blackjack Strategy Trainer helps you learn blackjack the right way. Practice real blackjack decisions and improve your basic strategy through fast, focused training. Learn when to hit, stand, split, double, or surrender with instant feedback after every hand. Whether you are completely new to blackjack or want to sharpen your decision-making, this app helps you build confidence through repetition. Features: • Learn blackjack basic strategy • Practice realistic blackjack hands • Train hit, stand, split, double, and surrender decisions • Get instant feedback after every move • Improve your accuracy over time • Practice hard hands, soft hands, and pairs • Build faster decision-making • Simple, clean, focused training experience • No real-money gambling Blackjack is a game of decisions. This app helps you make better ones. Download Blackjack Strategy Trainer and start practicing today. Premium Subscription Info: Price: • 1-year subscription for $89.99 • Payment will be charged to your Apple ID account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours before the end of the current period, and the renewal cost will be shown. • You can manage or turn off auto-renew in your Apple ID account settings any time after purchase. • This price is for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on your country of residence. Privacy Policy: https://blackjacktraining.co/privacy-policy Terms of Use: https://blackjacktraining.co/terms

Screenshots

34 screens
21 Trainer3 screens

Verdict

The call

The clearest difference is rating: 21 Trainer at 4.5 against 3's 3.8. 3's advantage is ads (none vs shown) and ratings volume (492 vs 2). On price, update cadence, in-app purchases and monetization model 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. 3 sells 12 one-off in-app purchases and 21 Trainer sells 4 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

21 Trainer holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: 3 has 492 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

3 ships an update every 5 weeks, 21 Trainer every 2 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
3 versus 21 Trainer: the parameters behind the verdict, then further details
Parameter321 Trainer
PriceFreeFree
Rating3.8 (492 ratings)4.5 (2 ratings) — better
Positive reviews18.8% of reviews—
Number of ratings492 — better2
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.6 — better16.0
Further details — not scored
Size230 MB23 MB
Age rating17+17+
DeveloperZINGPLAY INTERNATIONAL PTE. LTDLondon Technology

Customer experience

3

All ratings449 ratings
Positive66.4%
Neutral3.8%
Negative29.8%
Written reviews117 reviews
Positive18.8%
Neutral3.4%
Negative77.8%

21 Trainer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

12 purchases

3

One-time12
  • Pack 1$0.99
  • Pack 2$1.99
  • Pack 3$2.99
Show 9 more
  • Pack 4$3.99
  • Pack 5$4.99
  • Pack 7$6.99
  • Pack 10$9.99
  • Pack 15$14.99
  • Pack 20$19.99
  • Pack 30$29.99
  • Pack 50$49.99
  • Pack 100$99.99
4 purchases

21 Trainer

Subscriptions3
  • Blackjack Training PRO3 Days trial$8.997 Days
  • Blackjack Training PRO$44.991 Year
  • Blackjack Training PRO$89.991 Year
One-time1
  • Blackjack Training PRO$119.99

Questions

Is 3 free?
3 is free to download, with in-app purchases available.
Is 21 Trainer free?
21 Trainer is free to download, with in-app purchases available.
Which has better reviews, 3 or 21 Trainer?
21 Trainer is rated higher. 3 averages 3.8 out of 5 from 492 ratings, while 21 Trainer averages 4.5 from 2 ratings.
Do 3 or 21 Trainer have ads?
21 Trainer shows ads; 3 does not.
Which is updated more often, 3 or 21 Trainer?
3 ships an update every 5 weeks, and 21 Trainer every 2 months. Most recently, 3 was updated on October 26, 2026 and 21 Trainer on October 24, 2026.

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