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.
Make everyday expense tracking simple with Kane
$3.99 · 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 Kane - Expense 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Make everyday expense tracking simple with Kane. Record spending and income, see where your money goes, and keep a shared ledger with family. Pay once and use Kane without a subscription. QUICK, SIMPLE LOGGING Add an amount, category, and note. Find and edit past transactions when you need to. SEE YOUR MONEY CLEARLY Review monthly income and expenses, spending by category, and trends over time. KEEP TRACK OF RECURRING BILLS Set amounts and dates for recurring expenses, see upcoming bills, and use reminders and calendar integration. RECORD TOGETHER Use a shared ledger with family, distinguish personal and shared expenses, and review records by participant. Sharing and syncing between devices require iCloud. ACROSS YOUR APPLE DEVICES Use Kane on iPhone, iPad, and Apple Vision Pro. Keep your records in sync with iCloud, check widgets, and record transactions in multiple currencies, including while traveling. Kane is a manual expense ledger. It does not automatically import bank or card transactions, manage account balances, or set monthly or category budget limits.
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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 often struggle with budgeting due to lack of visual insights.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Manual transaction entry can be cumbersome.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Budget tracking can be tedious without reminders.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Users dislike paywalls after limited usage.
Validate with people who use this workflow before building.
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.