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
iCardVerify - Card Validator
Effortlessly verify and generate test credit card numbers with iCardVerify, the essential tool for developers and QA professionals.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
6 ratings · Top 5%
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 included14 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 iCardVerify - Card Validator: 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
Offer more detailed validation reports and suggestions.
Assumption to check: Limited functionality compared to web-based validators
Validate with people who use this workflow before building.
Hypothesis 2
Implement user accounts and history tracking for better usability.
Assumption to check: No user accounts or history tracking
Validate with people who use this workflow before building.
Hypothesis 3
Enhance UI with modern, user-friendly design elements.
Assumption to check: Basic UI design
Validate with people who use this workflow before building.
Hypothesis 4
Provide more value in the free version before upselling.
Assumption to check: In-app purchase for basic features
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
Effortlessly verify and generate test credit card numbers with iCardVerify, the essential tool for developers and QA professionals. Credit Card Generator: Harness the power of our advanced credit card generator to create up to 30 test credit cards in one batch. Whether you need Visa, Amex, Mastercard, JCB, or other card types, our generator has you covered. The generated credit card numbers can be instantly copied to the clipboard for quick use or exported as a PDF for convenient storage and reference. The credit card generator supports multiple formats, including JSON, XML, and plain text, ensuring seamless integration into your development and testing processes. Credit Card Validator: Our comprehensive credit card validator allows you to validate a wide range of credit cards with ease. From Visa and Amex to Mastercard, JCB, Discover, Diners Club, and Maestro, our credit card number validator supports all major card types. Ensure the accuracy and legitimacy of credit card numbers in your applications, enhancing your testing and validation workflow. The credit card validator provides detailed validation results, helping you identify and address any issues promptly. New: Sandbox Scenarios Make payment testing easier with the new Sandbox tab. Explore provider-published test scenarios for successful payments, declines, insufficient funds, 3D Secure authentication, and security code and address verification checks. Search by title, provider, or category to find the scenario you need, with clear descriptions of each expected outcome. Sandbox values are for supported test environments only. They do not verify real accounts and must never be used in production. Key Features: Offline Operation: Ensure privacy and security without internet dependency. Versatile Formats: Generate test card numbers in JSON, XML, or text for seamless integration. Extensive Support: Compatible with Visa, Amex, Mastercard, JCB, Discover, Diners Club, and Maestro. Export Options: Export generated credit cards to the clipboard or PDF for convenience. Perfect for testing payment systems and enhancing card security, iCardVerify simplifies your workflow. Note: iCardVerify does not authenticate account details or affiliate with card issuers.
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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
React Navigation
Zustand
Expo Camera
React Native Paper
BUILD KIT DIFFICULTY
Starter
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.
