222+ iOS apps & games curated and reviewed
With an average user rating of 4.5★, the card adder 21 category is one of the App Store's strongest. Browse all 222+ 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 | Jul 2026 |
| 2 |  | Free | 4.5★ (29K) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 4.7★ (13K) | Yes | Yes | Jul 2026 |
| 4 |  | Free | 4.9★ (129K) | No | Yes | Jul 2026 |
| 5 |  | Free | 4.8★ (603K) | No | No | Jul 2026 |
| 6 |  | Free | 4.6★ (7.7K) | Yes | Yes | Jul 2026 |
| 7 |  | Free | 4.9★ (43K) | Yes | Yes | Jul 2026 |
| 8 |  | Free | 4.7★ (52K) | Yes | No | Jul 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.
Experience classic blackjack with a talking dealer and engaging features like win streaks and daily challenges. Enjoy fair play with true random shuffles and track your progress through various locations. This entertainment-only game offers free chips and bonuses, with optional in-app purchases.
Lead your army in this free RPG by battling and collecting hundreds of heroes. Strategize squad composition and tactical control with powerful abilities. Explore unique levels, unlock skills, and duel other players to prove your might.
Create and share a professional digital business card in minutes. Customize with over 20 fields, including social media and unique links. Share via text, email, QR code, or NFC for seamless networking.
This all-in-one payments processing app helps businesses of all types manage operations, accept payments, and boost profits. It offers industry-specific modes for retail, restaurants, services, and beauty businesses, with features like inventory management, online booking, and invoicing.
Effortlessly digitize business cards by snapping a photo. The app automatically recognizes and saves contact information directly to your phone's contacts. Supports multiple languages for recognition and app interface.
Create and share beautiful, customizable digital business cards. Manage contacts, scan paper cards with AI, and integrate with your favorite tools. Elevate your networking and lead generation.
Enjoy a vast collection of classic card, solitaire, and puzzle games. Play solo or challenge friends in multiplayer modes. Track your statistics and enjoy an enhanced full-screen experience.
Securely store and manage digital versions of your credit/debit cards, IDs, transit passes, tickets, and keys. Use it to make payments, send money, and access venues and transportation with your iPhone or Apple Watch.
Manage your EFS or Fleet One cards with real-time balances, transaction details, and fuel location finder. This app allows drivers to quickly access card functions, register checks, and manage funds on the go.
Effortlessly capture business card details with your iPhone camera. This app automatically recognizes and saves contact information directly to your phone's contacts, supporting multiple languages for global use.
Securely manage your credit card account on the go. Check balances, make payments, monitor transactions, and lock your card. Stay on top of your finances and build credit with convenient 24/7 access.
Experience the thrill of a fast-paced card game where the goal is to be the first to play all your cards. Compete against others online or practice offline in this exciting digital adaptation of a popular shedding card game.
Instantly digitize business cards using your phone's camera. This app uses OCR technology to recognize and save contact information, supporting 26 languages and offering easy contact management and sharing options.
Enjoy a collection of classic trick-taking card games with realistic computer opponents. Play offline on your phone or tablet with adjustable difficulty and game speeds. Experience a familiar and relaxing card game environment anytime, anywhere.
Effortlessly identify, value, and manage your sports and trading card collections. Get instant market prices, organize your cards digitally, and streamline the selling process directly from your device.
This app allows users to collect, buy, sell, and trade sports and TCG cards digitally. It offers features like digital pack openings, a virtual showroom, and an integrated marketplace for seamless transactions. Users can also submit cards for grading and store them securely.
Manage your prepaid cards easily and securely. View balances, store card details, and add them to your digital wallet for contactless payments in-store or online. Quickly access full card information when needed.
Effortlessly scan, identify, and organize your trading card collection. Get real-time market prices, AI-powered grading insights, and manage your entire collection digitally across multiple TCGs. Keep your collection safe and accessible anywhere.
Track trending sports cards, find deals, and explore sets to discover hidden gems. Easily compare card values with sales data from multiple marketplaces. This free app is for collectors of all levels.