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
English French Sentences
This app provides English - French sentence dictionary.
$0.99
PRICE
$0.99
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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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/
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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 English French Sentences: 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 user-generated sentences for a more comprehensive experience.
Assumption to check: Limited sentence examples
Validate with people who use this workflow before building.
Hypothesis 2
Integrate audio playback for better learning.
Assumption to check: No audio pronunciation
Validate with people who use this workflow before building.
Hypothesis 3
Add quizzes or flashcards to enhance engagement.
Assumption to check: Lack of interactive features
Validate with people who use this workflow before building.
Hypothesis 4
Implement local storage to allow access to sentences without internet.
Assumption to check: No offline access
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
This app provides English - French sentence dictionary. This application is designed to help you learn bilingual English - French sentences with spaced repetition flashcards. Spaced repetition learning is proven to improve your ability to learn and retain information. ● Spaced repetition flashcards - Use flashcards to learn bilingual sentences - Put a card into skip list or master list - Tap a flashcard to see its detailed information - Mark a card as "hard", "good", "easy" - Hard flashcards are shown more frequently, good and easy flashcards are shown less frequently over time in order to exploit the psychological spacing effect. - Calendar: view flashcards scheduled on a date - Statistics: showing your progress ● English - French sentences - Over 261323 sentences - French translations by French speakers - English audio by English speakers - French audio by French speakers - Built-in dictionary: Long-press a word to look it up ● Lists - Create a custom list - Add sentences into a list - Review a list ● Notes - Write notes for each sentence - Review your notes ● Basic features: - Voice search - Search feature: search English sentence or search French sentence - Bookmark feature - Learn 10 entries daily - Share, copy sentences
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
@react-navigation/native
react-native-sound
react-native-async-storage
expo-linear-gradient
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.
