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.
Most budget apps tell you where your money went
$4.99 · 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.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
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 Tool: 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: Users find it difficult to categorize transactions accurately.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of visual spending insights.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited customization options for budgets.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Subscription model may deter users.
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.
Most budget apps tell you where your money went. Cash Flow Tool tells you where it's going. Built around a 12-month, week-by-week projection engine, Cash Flow Tool maps your upcoming bills, income, credit card payments, and loan obligations into a running balance so you can see your financial picture before it happens, not after. Know Your Weeks, Not Just Your Months Every month is broken into weeks. See your projected balance at the end of each week, spot low-balance periods before they become overdrafts, and plan one-time expenses or extra income with precision. A color-coded warning highlights any week your balance dips below your threshold. Everything in One Place Recurring bills with due-day scheduling and category tagging Multiple income sources with flexible pay frequencies (weekly, biweekly, semi-monthly, monthly) Credit card balances, limits, and interest rate tracking Loans with monthly payment and due-day scheduling One-time expenses and additional income entries per week Savings Builder Set up to three savings buckets with your strategy of choice: a percentage of your income, a percentage of your monthly surplus, or a fixed amount. Savings contributions reduce your projected balances in real time so you always know what saving actually costs you month to month. Debt Payoff Planner See your true payoff timeline using the Avalanche method (highest interest first), Snowball method (smallest balance first), or your current payment plan. Add extra monthly contributions and watch the payoff date move. Interest costs are calculated and displayed so the math is never hidden. Charts That Actually Help The Cash Flow chart plots your 52-week projected balance as a line, with your low-balance warning shown as a reference. Zoom in or out, tap any week for details, and scroll across the full year. The Expenses chart breaks your monthly spending into categories so you can see where your budget is going at a glance. Built for iPhone, iPad, and Mac One app, all your devices. The full experience is available on iPhone, iPad, and Mac with a layout tailored to each. iCloud sync keeps everything up to date automatically across all of them. You can also share your data with a family member or partner so you're always working from the same numbers. Dark mode supported. Private and Secure Enable Face ID, Touch ID, or passcode lock so the app requires authentication every time it opens. Your data lives in iCloud and is never shared with anyone without your permission.
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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.