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
Convert Fácil
Calcule o preço final em segundos
$0.99 · In-app purchases
PRICE
$0.99
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 included16 files
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 Convert Fácil: map the core Shopping 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 real-time conversion rates with user feedback.
Assumption to check: Limited user feedback and conversion accuracy
Validate with people who use this workflow before building.
Hypothesis 2
Include detailed history with timestamps and amounts.
Assumption to check: No detailed conversion history
Validate with people who use this workflow before building.
Hypothesis 3
Expand currency options and allow user to add favorites.
Assumption to check: Lack of currency support
Validate with people who use this workflow before building.
Hypothesis 4
Add theme options for enhanced user experience.
Assumption to check: No dark mode or customization options
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
Calcule o preço final em segundos. Com impostos, descontos e câmbio do dia — em 80+ destinos nos EUA, Canadá e Europa. O app favorito de quem viaja para fazer compras, Convert Fácil mostra na hora quanto custa em Reais, aplica dois descontos em cascata e respeita a taxa do seu cartão. CALCULADORA INTELIGENTE • Impostos de venda aplicados automaticamente por cidade/estado • Duplo desconto em cascata (ex: 30% + 20% extra no caixa) • Valor final na moeda local e em Reais, lado a lado • Categorias: roupas, eletrônicos, beleza, casa e mais IMPOSTOS DE 3 REGIÕES • EUA: 50 estados + cidades populares (NYC, Miami, Orlando, LA, Las Vegas) • Canadá: 13 províncias com GST, PST, HST e QST (Toronto, Vancouver, Montreal) • Europa: 18 países com IVA padrão e reduzido (Portugal, Espanha, França, Itália, Alemanha, Reino Unido e mais) MULTI-MOEDA • USD, CAD, EUR, GBP, CHF + 6 outras moedas • Detecção automática por GPS ao chegar no destino • Cotação do dia ou taxa personalizada do seu cartão CONTROLE DE GASTOS • Orçamento diário com alerta antes de estourar • Carrinho com múltiplos itens e total em BRL • Histórico completo por viagem SINCRONIZAÇÃO iCLOUD • Dados em todos os seus Apple devices • Privacidade garantida (iCloud privado da Apple) • Dynamic Island mostra progresso da sincronização WIDGETS E LIVE ACTIVITY • Última compra e gasto do dia na tela de início • Live Activity com progresso da sync no Dynamic Island PRIVACIDADE EM PRIMEIRO LUGAR • Face ID / Touch ID protegem seus dados • Nenhum dado compartilhado com terceiros • Processamento local, funciona offline PERFEITO PARA • Turistas brasileiros no exterior • Compras em outlets, shoppings e duty-free • Comparar preços antes de passar no caixa • Controle de gastos durante a viagem Baixe grátis e faça compras mais inteligentes.
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
React Native
Expo
axios
zustand
react-navigation
expo-constants
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.
