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App Store Apps > Games > Casino Games > Blackjack Strategy: 21 Trainer
Blackjack Strategy: 21 Trainer icon

Blackjack Strategy: 21 Trainer

by Apphaze · Games · Free
On the App Store since February 2026 · Data updated 2026-10-13
App Store

Blackjack Strategy: 21 Trainer is made and published by Apphaze. AppBrain is an independent app data site and isn't affiliated with Apphaze. The app name, icon, screenshots and description belong to Apphaze and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
4.69
52 ratings
Last updated
October 10, 2026
Size
54.6 MB

It doesn't have enough ratings yet to judge what users think.

User feedback

Ratings and reviews on the App Store

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Store listing

By Apphaze, from the App Store
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Screenshots by Apphaze, from the the App Store listing
Description by Apphaze Written by the developer, not by AppBrain. Click to read.
Stop guessing. Start playing perfect blackjack.

21 Trainer tells you the mathematically correct play for every hand, and explains WHY, so you walk into any casino with confidence, not hope.

Whether you're learning basic strategy for the first time or drilling advanced card counting deviations, 21 Trainer adapts to your level.

▸ LEARN THE RIGHT PLAY (FREE)

• 270+ hand scenarios with instant right/wrong feedback and clear explanations for every decision
• Color-coded strategy charts that adjust automatically to your selected house rules
• 9 real casino presets: Vegas Strip, Downtown Vegas, Atlantic City, Macau, Monte Carlo, Sydney, European (ENHC), Single Deck, and Double Deck
• Full rule customization: decks (1-8), H17/S17, DAS, early/late surrender, split limits, 3:2 or 6:5 payout
• Track accuracy, streaks, and set session goals

▸ GO PRO: MASTER THE EDGE

• 4 Card Counting Systems: Hi-Lo, KO, Omega II, and Zen Count
- Single Card Drill: lock in point values
- Multi-Card Counting: build speed under pressure
- Deviation Trainer: learn when the count overrides basic strategy
• Bankroll Simulator: run virtual sessions with real bet sizing, then review your ROI, strategy adherence, and a hand-by-hand mistake breakdown
• Hard Mode: finds your weakest hands and drills them until they're strengths
• Advanced Statistics: accuracy heat maps by hand type and dealer upcard, session history, and progress tracking

▸ BUILT FOR SERIOUS PLAYERS

• Works 100% offline, practice anywhere
• Left and right-handed layouts
• Blind Mode: hide totals, read the cards like a pro
• 7 felt colors, 8 card back designs, haptic feedback
• Auto-deal with adjustable speed

No real money. No gambling. No account needed. Just pure strategy training for players who refuse to leave money on the table.

Privacy Policy: https://21trainer.app/privacy
Terms of Use: https://21trainer.app/terms
Support: https://21trainer.app/support
Official page on the App Store

Safety and technology

Found in the app by AppBrain
Price
Free
App size
54.6 MB
Content rating
High

Technologies used by Blackjack Strategy: 21 Trainer

Releases

Updates seen on the App Store
Version
1.1.7
Launched
February 2026

No changelog data

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Rankings

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App Store Rankings for Blackjack Strategy: 21 Trainer

This app is not ranked

About the app and developer

About Blackjack Strategy: 21 Trainer

Blackjack Strategy: 21 Trainer is a games app developed by Apphaze.

User Ratings

Blackjack Strategy: 21 Trainer is rated 4.69 out of 5 stars. The rating is based on 52 ratings.

App Information

Blackjack Strategy: 21 Trainer is freely available from the App Store. The app size is 54.58 MB. The latest version available is 1.1.7. The last update was on October 10, 2026.

Technical Requirements

The app has a content rating of High Maturity. The app has been available on the App Store since February 2026.

Developer information for Apphaze

Apphaze

Address:

Frequently asked questions about Blackjack Strategy: 21 Trainer

Is Blackjack Strategy: 21 Trainer free?

Yes. Blackjack Strategy: 21 Trainer is free on the App Store.

Is Blackjack Strategy: 21 Trainer still available?

Yes. Blackjack Strategy: 21 Trainer is on the App Store, and the last update we saw was on October 10, 2026.

How large is Blackjack Strategy: 21 Trainer?

Blackjack Strategy: 21 Trainer is 54.58 MB.

Is Blackjack Strategy: 21 Trainer suitable for children?

App Store gives Blackjack Strategy: 21 Trainer a high maturity rating. It is meant for adults.

How do people rate Blackjack Strategy: 21 Trainer?

Blackjack Strategy: 21 Trainer scores 4.69 out of 5 stars, from 52 ratings on the App Store.

Who made Blackjack Strategy: 21 Trainer?

Blackjack Strategy: 21 Trainer was developed by Apphaze. It is listed in the games category on the App Store.

Share Blackjack Strategy: 21 Trainer

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