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.
Track who owes you and who you owe with elegant simplicity.
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Cash Flow - Money Tracker: 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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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
Assumption to check: Limited transaction categorization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No visual spending insights
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Basic budget management features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of reminders for bills
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Track who owes you and who you owe with elegant simplicity. Cash Flow is a personal finance app designed to simplify tracking informal debts and shared expenses between friends, family, and colleagues. Keep tabs on your financial relationships all in one place with a beautifully designed, intuitive interface. Key Features: Two-Way Transaction Tracking * Record payments you make and money you receive * Track running balances for each person in your life * Instantly see who owes you and who you owe at a glance Comprehensive Transaction Management * Create, edit, duplicate, and delete transactions with ease * Add detailed memos to transactions for context * View transaction history in clean, chronological order Reconciliation System * Mark transactions as reconciled when they're settled * Easily toggle reconciliation status with simple swipe actions * Visual indicators show reconciled vs. unreconciled transactions Powerful Search * Quickly find transactions across your entire history * Search by description, amount, or memo * View search results in an intuitive, filterable list Balance Summaries * Beautiful balance cards show current status with each contact * Running balances automatically calculate as you add transactions * Color-coded indicators make financial status instantly clear Cash Flow is perfect for roommates tracking shared expenses, friends splitting costs during trips, family members lending each other money, or anyone who wants to maintain clear financial relationships without formal invoicing systems. Never wonder "Do I owe them or do they owe me?" again. Download Cash Flow today and bring clarity to your personal finances. Simple. Elegant. Balance.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.