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
Raccoon Vocabulary
build a powerful vocabulary with raccoonvocab — your smart companion for mastering english words
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 ratings · Top 5%
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/
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 Raccoon Vocabulary: map the core Education 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
Offer a broader range of words and custom flashcard creation.
Assumption to check: Limited vocabulary options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate social sharing and leaderboard features.
Assumption to check: No social features for sharing progress
Validate with people who use this workflow before building.
Hypothesis 3
Provide detailed feedback and explanations for wrong answers.
Assumption to check: Minimal feedback on exercises
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline access to flashcards and exercises.
Assumption to check: Lack of offline support
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
build a powerful vocabulary with raccoonvocab — your smart companion for mastering english words. whether you're preparing for toefl, ielts, gre, or simply expanding your everyday vocabulary, our friendly raccoon guide is here to help. comprehensive word library • oxford 3000 — essential everyday words • ielts — words for academic success • toefl — words for test excellence • gre — advanced vocabulary words learn words in context unlike traditional flashcard apps, raccoonvocab uses ai-powered example sentences to help you understand how words are actually used. select the correct sentence that demonstrates proper word usage and build deeper understanding. smart quiz mode test your knowledge with engaging multiple-choice quizzes. see a word with its pronunciation, then pick the correct definition from four options. track your scores and watch your accuracy improve over time. track your progress • see how many words you've mastered in each category • review your test history and average scores • search through your word list anytime • watch your mastery level grow with every session voice reading enable voice reading to hear words pronounced correctly. perfect for improving both vocabulary and pronunciation skills. beautiful design enjoy a sleek, modern dark interface that's easy on the eyes during long study sessions. our charming raccoon mascot keeps you motivated along the way. perfect for • toefl test preparation • ielts academic and general training • gre verbal section mastery • english language learners • anyone looking to expand their vocabulary start your vocabulary journey today with raccoonvocab. learn smarter, remember longer, and achieve your language goals!
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
axios
react-native-async-storage
react-native-vector-icons
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.
