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
French~English Dictionary
THE OFFICIAL LAROUSSE DICTIONARY - 400,000 TRANSLATIONS
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.6
7 ratings · Top 50%
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 included19 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 French~English Dictionary: 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
Include more diverse and extensive word lists.
Assumption to check: Limited vocabulary compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement a modern and visually appealing design.
Assumption to check: Outdated user interface
Validate with people who use this workflow before building.
Hypothesis 3
Ensure high-quality audio recordings for all entries.
Assumption to check: Inconsistent audio quality
Validate with people who use this workflow before building.
Hypothesis 4
Provide context with example sentences for every word.
Assumption to check: Lack of example sentences for many entries
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
THE OFFICIAL LAROUSSE DICTIONARY - 400,000 TRANSLATIONS - 250,000 words and phrases - 400,000 translations illustrating all nuances of meaning - Recorded pronunciation for 450,000 words and phrases (Internet access required) - 3,000 abbreviations - Proverbs, sayings and idiomatic expressions - Useful search history feature A CONVERSATION GUIDE A travel guide for your trip with 1,400 useful phrases (offline) SIMPLE AND HELPFUL The quick search function allows you to look up words simply by keying them into your iPhone or iPad. Fast and easy to use on the move, this application can be downloaded in full onto your iPhone or iPad. No need for an internet connexion once you've downloaded the application - access the full dictionary offline (except the recorded pronunciation words). Larousse Mobile, a library in your pocket!
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
React Native Sound
BUILD KIT DIFFICULTY
Advanced
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.
