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
Le Petit Larousse 2019
Un dictionnaire de langue
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.2
16 ratings · Below Average
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 included17 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Le Petit Larousse 2019: map the core Reference 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 database and improve content quality.
Assumption to check: Limited word definitions compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement modern design trends and improve UX.
Assumption to check: User interface feels outdated
Validate with people who use this workflow before building.
Hypothesis 3
Optimize search algorithms for faster results.
Assumption to check: Inconsistent performance with search results
Validate with people who use this workflow before building.
Hypothesis 4
Add offline access features for frequently searched words.
Assumption to check: No offline access for users
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
Un dictionnaire de langue • Plus de 63 000 mots comprenant plus de 120 000 sens et 20 000 locutions • 1 500 remarques de langue ou d’orthographe • 2 000 régionalismes et mots de la francophonie Un dictionnaire encyclopédique illustré • 28 000 noms propres : personnalités, lieux, événements • 4 500 compléments encyclopédiques • 2 500 photos, dessins, cartes Les célèbres pages roses : proverbes, locutions étrangères, mots historiques et un petit trésor de locutions francophones. Une aide aux jeux de lettres pour rechercher un mot en fonction de la position précise de lettres ou en combinant toutes les lettres d’un mot. Une aide précieuse pour tous les cruciverbistes et passionnés de jeux de lettres. Le jeu du dictionnaire pour s’amuser à retrouver la bonne définition d’un mot. • 800 questions dans un mode entraînement sous forme de quiz avec 3 propositions • 10 000 mots et définitions à retrouver dans le mode expert • Défiez vos amis en leur envoyant la question par SMS, courriel ou Facebook® De nombreuses fonctionnalités de navigation : • Un hypertexte total sur tous les mots du dictionnaire pour afficher d’un clic leur définition. • Un correcteur orthographique • Un historique, des favoris sauvegardés dans iCloud et un partage par courriel des articles. A partir d’iOS9 : recherchez dans le Petit Larousse directement à partir de la recherche fédérée de votre iPhone
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
Supabase
react-navigation
redux
react-native-gesture-handler
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.
