Card Adder 21
Card Adding Mental Training
Free · In‑App Purchases · Designed for iPad
Playing card counting game with progressive levels, records and high scores!
HOW TO PLAY
Cards are dealt one by one. Keep track of the running total to progress through levels. What level can you reach?
FEATURES
• Progressive difficulty levels with a timed challenge
• Progress tracking
• Ads are ONLY shown on losing segments
COMING SOON
• Game Center high scores and community records
• Personalized progress tracking
Perfect for anyone wanting to improve their mental adding and counting skills.
Download Card Adder 21 and make counting fun.
Ratings & Reviews
Pro (ad-free) lifetime upgrade now available!
The developer, Martin Klemes, 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
- Martin Klemes
- Size
- 79.3 MB
- Category
- Card
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Infrequent
Contests
Contains
Gambling and Contests
Advertising
- In-App Purchases
Yes
- Card Adder 21 Pro Lifetime $4.99
- Copyright
- © 2025