Stack 21
Puzzle
Only for iPhone
Free
iPhone
Stack 21 is a simple number-stacking puzzle game that’s easy to learn and surprisingly hard to put down.
Choose numbered tiles and build your stack toward 21. Hit exactly 21 to clear the stack and build your streak. Go over 21 and you take a strike. Three strikes ends the game.
Think ahead, watch the total, and see how high you can score.
• Simple, fast puzzle gameplay
• Streak bonuses for consecutive clears
• Local high-score tracking
• Works offline
• No account required
• No ads
• No in-app purchases
• No tracking
Your game progress and high score stay on your device.
Stack 21 is published by Doleman Enterprises LLC.
Ratings & Reviews
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The developer, Doleman Enterprises, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DOLEMAN ENTERPRISES LLC
- Size
- 2.7 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Doleman Enterprises LLC