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
HappyCow - Vegan Food Near You
Discover the Best Vegan and Vegetarian Restaurants Anywhere!
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
32,674 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/
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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 HappyCow - Vegan Food Near You: map the core Travel workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Discover the Best Vegan and Vegetarian Restaurants Anywhere! For over 25 years, HappyCow has been the number 1 guide for finding delicious plant-based, healthy dining options wherever you go. With over 240,000 listings in 185 countries, we make it easy to explore the world of vegan and vegetarian cuisine. Key Features: • Powerful Search & Filters: Find restaurants near you, and plan trips ahead. Filter by vegan, vegetarian, gluten-free, raw cuisine, and more! • Interactive Maps: Explore popular and “hidden gem” restaurants on our community-curated maps. Save favorites for offline access. • Extensive Reviews: Access 1,875,000+ restaurant reviews and 3,000,000+ photos from others like you • Engage with the Community: Instantly be part of the world’s largest vegan and vegetarian community. Follow and connect with like-minded people, leave reviews, create shareable trips, and view photos and reviews on the Feed • 9 Languages: Access main app features in English, Spanish, French, German, Dutch, Italian, Japanese, Mandarin, and Cantonese. Why HappyCow? • We’re the world’s largest vegan platform, with an established 25 year legacy! • Travel confidently with extensive global coverage and user-generated content. • Find the best vegan food near you with detailed reviews, photos, directions and more. • Our passionate community of over 1.2 million is here to support you no matter where you go. Discover plant-based, healthy dining in a new way, and never miss the best dining experiences near you! Don't see your favorite vegan or vegetarian spot? List it on HappyCow and help grow our ever-expanding database! If you’re having trouble with the app, contact us at [email protected] before leaving a review. We're here to help! Download HappyCow now and unlock a world of delicious plant-based adventures!
Written user reviews are not shown here. Check current App Store reviews >
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
Incorporate user-generated listings to expand the database.
Assumption to check: Limited vegan restaurant options in some areas.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance review verification and update processes.
Assumption to check: Inconsistent information about restaurants.
Validate with people who use this workflow before building.
Hypothesis 3
Offer a free tier with limited features to attract more users.
Assumption to check: Subscription model may deter casual users.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a step-by-step onboarding tutorial.
Assumption to check: Navigation can be confusing for new users.
Validate with people who use this workflow before building.
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
axios
react-native-maps
BUILD KIT DIFFICULTY
Expert
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.
