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
iCard Store
Card Storage is a private, secure wallet app that keeps all your payment cards, loyalty cards, and membership cards in one organised place — protected by Face ID, Touch ID, or a personal PIN.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
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 iCard Store: map the core Finance 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
Implement a consolidated view of all accounts with quick access.
Assumption to check: Users find it difficult to manage multiple accounts efficiently
Validate with people who use this workflow before building.
Hypothesis 2
Utilize AI to suggest categories based on user behavior.
Assumption to check: Many finance apps lack intuitive transaction categorization
Validate with people who use this workflow before building.
Hypothesis 3
Add visual budget tracking tools with alerts for overspending.
Assumption to check: Users often struggle to keep track of their budgets
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear value propositions for subscription tiers and trial periods.
Assumption to check: In-app purchase models are often unclear
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
Card Storage is a private, secure wallet app that keeps all your payment cards, loyalty cards, and membership cards in one organised place — protected by Face ID, Touch ID, or a personal PIN. Key Features: Bank-Level Security Your card numbers and CVV codes are stored exclusively in the iOS Keychain — hardware-encrypted and never sent to any server. Card metadata syncs privately across your own Apple devices via iCloud. Store Every Card You Own Add credit cards, debit cards, gift cards, loyalty cards, and membership cards. Include the card number, expiry date, CVV, bank name, card type, and personal notes. Quick Card Scanning Use your camera to scan a card and automatically fill in the details. No photo is stored — the data is extracted and discarded immediately. Smart Organisation Create custom groups (e.g. "Personal", "Work", "Travel") with your own colour and icon to keep cards neatly sorted. Expiry & Payment Reminders Never let a card expire silently again. Set reminders 1, 2, 3, or 6 months before a card expires. Optionally sync reminders to your Apple Reminders app. Custom Reminders Create payment-due reminders or any custom notification for any card, with optional recurring alerts. Auto-Lock The app automatically locks after 30 seconds of inactivity, so your data stays safe even if you walk away. iCloud Sync (Metadata Only) Card metadata (bank name, expiry, groups, reminders) syncs securely across all your Apple devices using CloudKit. Sensitive data (card numbers, CVV) never leaves the current device. Your Privacy is Non-Negotiable Card Storage contains no advertising, no analytics SDKs, and no third-party tracking of any kind. The developer cannot access your data. No Subscriptions One-time purchase only
Written user reviews are not shown here. Check current App Store reviews >
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
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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.
