Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
/cards: Claude Code Flashcards
Slash Cards turns the Claude Code slash command catalog into a focused, beautiful study app
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
N/A
No ratings yet
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for /cards: Claude Code Flashcards: map the core Developer Tools workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Allow users to customize colors, fonts, and styles for each card.
Assumption to check: Limited customization options for code snippets
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search with tags and filters.
Assumption to check: Search functionality may not be robust
Validate with people who use this workflow before building.
Hypothesis 3
Add sharing features to allow users to share cards via social media or email.
Assumption to check: No sharing options for code snippets
Validate with people who use this workflow before building.
Hypothesis 4
Introduce ratings and comments for each card to enhance community engagement.
Assumption to check: Lack of user feedback mechanisms
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
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
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
TypeScript
Supabase
React Navigation
Zustand
BUILD KIT DIFFICULTY
Intermediate
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
