248+ iOS apps & games curated and reviewed
With an average user rating of 4.4★, the card adder 21 category is one of the App Store's strongest. Browse all 248+ apps and games we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | Yes | Sep 2026 | |
| 2 |  | Free | 3.4★ (20) | No | No | May 2026 | |
| 3 |  | Free | 4.4★ (5) | No | Yes | Oct 2026 | |
| 4 |  | Free | 4.7★ (19K) | Yes | No | Nov 2026 | |
| 5 |  | Free | 4.6★ (202) | Yes | Yes | Nov 2026 | |
| 6 |  | Free | 5.0★ (1) | No | No | Oct 2026 | |
| 7 |  | Free | 3.4★ (8) | Yes | No | Oct 2026 | |
| 8 |  | Free | 4.2★ (9) | No | Yes | Oct 2026 |
Enhance your mental math skills by tracking a running total as cards are dealt. Progress through increasingly challenging levels with a timed element. The game offers progress tracking and is designed to make counting enjoyable.
Practice card counting to improve your blackjack skills. Challenge yourself to count as many cards as possible within a 30-second time limit.
A card game where players aim to get a higher score than their opponent without exceeding 21. Choose from classic or power-up modes, playing solo or with friends.
