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
Fer Fontoura
O Aplicativo “Comidinhas da Diana” é um espaço que reúne as Receitas feitas por Fernanda Fontoura para sua filha Diana no dia a dia, com o objetivo de compartilhar as mesmas e incentivar a alimentação saudável, caseir...
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
14 ratings · Top 15%
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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Combine features and design from your favorite apps.
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What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 Fer Fontoura: map the core Food & Drink 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
Expand restaurant partnerships and offer more choices.
Assumption to check: Limited restaurant options in certain areas
Validate with people who use this workflow before building.
Hypothesis 2
Optimize app performance and server response.
Assumption to check: Slow loading times during peak hours
Validate with people who use this workflow before building.
Hypothesis 3
Implement better map tracking and notifications.
Assumption to check: Difficulty tracking orders in real-time
Validate with people who use this workflow before building.
Hypothesis 4
Provide in-app chat support or FAQs.
Assumption to check: Lack of customer support 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
O Aplicativo “Comidinhas da Diana” é um espaço que reúne as Receitas feitas por Fernanda Fontoura para sua filha Diana no dia a dia, com o objetivo de compartilhar as mesmas e incentivar a alimentação saudável, caseira e simples para as crianças e toda a família. São 28 receitas agrupadas por categorias (Bolos, Pãezinhos, Iogurte Natural Caseiro...), por Idade (a partir de 6, 9, 12 e 24 meses) e por tipo de Restrição Alimentar (sem glúten, sem lactose, sem adição de açúcar e sem ovos). Além das receitas, no Aplicativo existe um cantinho especial “Sobre Nós” no qual Fernanda Fontoura se apresenta e conta um pouquinho sobre o surgimento da marca Comidinhas da Diana, que teve seu início no Instagram. A partir deste cantinho será possível ir direto para esta rede social, assim como, para seu Facebook e Blog. E claro também haverá um cantinho exclusivo para conhecer e comprar sua linda Coleção de Livros fruto da dedicação diária ao “Comidinhas da Diana”: - "Criar e Conservar"; - “Uma História de Amor em Forma de Pratinhos”; - “Menu da Diana”; - “Cores e Sabores da Diana”. É o “Comidinhas da Diana” nas suas mãos, com pitadas de praticidade e informação!
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 Navigation
Axios
Zustand
React Native Maps
Expo
BUILD KIT DIFFICULTY
Starter
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.
