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
WellPaid: Invoice & Quotes
Stop paying monthly fees for complex accounting software
$9.99
PRICE
$9.99
No 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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A product spec, screen plans, and build steps for your coding agent.
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What's included
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 WellPaid: Invoice & Quotes: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Stop paying monthly fees for complex accounting software. WellPaid is a high-velocity, 100% offline invoice and bookkeeping tool built for contractors and sole traders. Pay once. Own your financial data forever. • Zero Subscriptions: No monthly fees or hidden tiers. • 100% Offline: Works instantly with zero mobile signal. • One-Tap PDFs: Generate HMRC-compliant invoices in seconds. HIGH-VELOCITY INVOICING • Instant Calculations: Tax, discounts, and totals calculate automatically as you type. • 1-Tap Conversion: Transform accepted quotes into invoices instantly without retyping. • Automated Sequencing: Issue sequential invoice numbers adapted to your existing system. • Exact Auditing: Track documents through Draft, Issued, Paid, and Void states. PROFESSIONAL PDF GENERATION • Automated Branding: Embed your logo and business details once for universal application. • Universal Export: Distribute PDFs instantly via WhatsApp, Messages, or email. • Zero-Signal Processing: Render perfect documents directly on-device in dead zones. • Native Localization: Format and calculate in 45+ global currencies instantly. FINANCIAL LOGGING & TRACKING • Visual Evidence: Attach up to 5 photos per expense with high-fidelity pinch-to-zoom. • Granular VAT: Isolate tax metrics at the exact moment of entry. • Client Import: Pull contact data instantly from your native device directory. • Price Catalogue: Store standardized services and materials for instant retrieval. ANALYTICS & DOUBLE-ENTRY EXPORTS • Visual Dashboards: Track revenue, net profit, and unpaid invoices across custom timeframes. • Accountant-Ready CSVs: Generate balanced double-entry journals instantly. • Seamless Handoffs: Debits and credits are mathematically verified before export. ABSOLUTE DATA SOVEREIGNTY • 100% Device-Isolated: Zero cloud syncing, zero account tracking, zero data mining. • Keychain Encryption: Your financial data is locked with native iOS cryptographic security. • Portable Backups: Generate password-protected export files to manage your own data lifecycle. Spend a couple of minutes on paperwork instead of an evening. The rest of the time is yours.
Written user reviews are not shown here. Check current App Store reviews >
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 automated reminders and payment tracking features.
Assumption to check: Difficulty in tracking payments and follow-ups.
Validate with people who use this workflow before building.
Hypothesis 2
Provide advanced analytics and customizable reports.
Assumption to check: Limited reporting capabilities.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the onboarding process and provide guided tours.
Assumption to check: User interface can be overwhelming for new users.
Validate with people who use this workflow before building.
Hypothesis 4
Add multi-currency functionality for international users.
Assumption to check: Lack of multi-currency support.
Validate with people who use this workflow before building.
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
Zustand
react-navigation
react-native-paper
TypeScript
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
