/cards: Claude Code Flashcards
Memorize every slash command
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Slash Cards turns the Claude Code slash command catalog into a focused, beautiful study app. Quiz yourself two ways: see a command and pick the right description, or read a description and pick the right /command. Built for developers who live in Claude Code and want to actually remember what /compact, /resume, /security-review, /hooks, and the rest of the catalog do.
WHAT'S INSIDE
• 40+ documented slash commands, kept current as new Claude Code releases ship
• Command → Description quiz mode
• Description → Command quiz mode
• Mixed mode that alternates both directions
• Category filters: built-in, plugin, hooks, MCP, and more
• A polished Library to browse the full catalog with search
• Per-command detail pages with examples, versions, aliases, and notes
• Mastery tracking: answer a command correctly five times to lock it in
• Stats: streaks, daily activity, accuracy, and a per-category breakdown
WIDGETS
• Card of the Day on your Home Screen (small + medium)
• Lock Screen accessory with today's command
• Control Center button to jump straight into a quiz round
18 LANGUAGES
Slash Cards is fully localized, and you can pick your language in Settings independently of your device language.
DESIGN
• Anthropic-inspired warm coral palette
• First-class Light and Dark Mode
• Built natively in SwiftUI
MEMBERSHIP
One simple membership unlocks everything: unlimited practice, every study mode, the full searchable Library, Home Screen and Lock Screen widgets, daily streak reminders, and mastery tracking.
Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings.
Privacy: Slash Cards stores quiz progress on-device only. The command catalog refreshes from a public read-only endpoint. No account required.
Slash Cards is an independent study tool and is not affiliated with or endorsed by Anthropic. "Claude" and "Claude Code" are trademarks of their respective owners.
Terms of Service: https://parra.io/terms-of-service.html
Privacy Policy: https://parra.io/privacy-policy.html
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Polish and stability work across practice rounds. New slash commands keep landing in the catalog as they ship.
The developer, Parra LLC, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Parra LLC
- Size
- 5.4 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 16 more
- English, Arabic, Bengali, French, German, Hindi, Japanese, Kinyarwanda, Kongo, Korean, Lingala, Luba-Lulua, Portuguese, Russian, Simplified Chinese, Spanish, Swahili
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Monthly USD 2.99
- Pro Annual USD 19.99
- Pro Annual USD 7.99
- Pro lifetime USD 14.99
- Copyright
- © 2026 Parra LLC