/cards for Claude Code

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