Blackjack Strategy Downloads & RevenueBlackjack Strategy: 21 Trainer · App Store
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperApphaze
CategoryGames
PriceFree
Released
Rating★ 4.7 (109)
Version1.2.1
Age rating17+
First seen by us
29 Oct 2026
29 Oct 2026Installs (est.)5k+ worldwide
Blackjack Strategy: 21 Trainer update history & changes
Last change · 7 events since 26 Feb 2026Full timeline ↓✏️Description updated📦Updated to version 1.2.2📦Updated to version 1.2.1🆕First spotted by AppInsider🆕Its developer released another app: Blackjack - No Ads & Offline
Full timeline · 7 events
- ✏️Blackjack Strategy: 21 Trainer: description updated· US
- 📦Blackjack Strategy: 21 Trainer updated to version 1.2.2Blackjack training improvements & bug fixes
- 📦Blackjack Strategy: 21 Trainer updated to version 1.2.1Blackjack training improvements & bug fixes
- 🆕Blackjack Strategy: 21 Trainer first spotted by AppInsiderUnited States (found via search)
- 📦Blackjack Strategy: 21 Trainer version 1.2.0Blackjack training improvements & bug fixes
- 🆕Blackjack Strategy: 21 Trainer: its developer released another app: Blackjack - No Ads & Offline
- 🆕Blackjack Strategy: 21 Trainer released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.7 ★
109 ratings
Measured
New ratings a week
7
App Store, 4-week average
Measured
Blackjack Strategy: 21 Trainer on the App Store
App details
App ID
6759527695
Publisher
APPHAZE LIMITED
On the store since
Feb 2026
Under a year
Minimum OS
iOS 18.6+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
17+
1 content note below
Languages
1
EN
Size
72 MB
Also listed in
Casino, Card, Education
Content notesFrequent/Intense Simulated Gambling
Blackjack Strategy: 21 Trainer downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.7 ★
109 ratings
Measured
Ratings
109
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
7
4-week average
Lifetime rating
4.7★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
64/100
faster than 74% of Games apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Blackjack Strategy: 21 Trainer
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
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
Latest updates
1.2.2
Blackjack training improvements & bug fixes
1.2.1
Blackjack training improvements & bug fixes
1.2.0
Blackjack training improvements & bug fixes
Store changes
What Blackjack Strategy: 21 Trainer changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
