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
ZARA
Discover the Zara collection with ideas for Woman, Man, and Kids
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
413,198 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 ZARA: map the core Shopping 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
Implement advanced filtering and sorting options for better user experience.
Assumption to check: Limited product filtering options
Validate with people who use this workflow before building.
Hypothesis 2
Enhance app stability and performance through improved error handling.
Assumption to check: Occasional app crashes
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image loading with lazy loading techniques.
Assumption to check: Slow loading times for images
Validate with people who use this workflow before building.
Hypothesis 4
Include additional payment methods like PayPal or Google Pay.
Assumption to check: Limited payment options
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
Discover the Zara collection with ideas for Woman, Man, and Kids. You can shop and see all our new collections and fashion campaigns for the upcoming seasons on our app and online store. Woman: You will find the following categories of clothing and accessories available for women at Zara: - Shirts - T-shirt/Bodysuits - Tops - Sweatshirts - Skirts - Pants - Jeans - Shorts - Coats - Shoes - Bags - Swimwear - Accessories - Lingerie - Beauty - Fragrances - Basics - Complete Looks - Suits Man: The Zara collection for men includes: - Basics - Pants - Cargo/Parachute - Jeans - Jackets/Overshirts - Sweatshirts - T-shirts - Shirts - Polos - Shorts - Sweaters/Cardigans - Suits - Overcoats - Sportcoats/Blazers - Shoes - Bags/Backpacks - Accessories - Fragrances Kids: A selection of clothing, accessories, and shoes for: - Girl: 6-14 years - Boy: 6-14 years - Baby Girl: 9 months-6 years - Baby Boy: 9 months-6 years - Newborn: 0-12 months The Zara collection for kids also includes an Edited/customizable section, a selection of clothing and accessories to customize that is updated weekly. In addition to our permanent collections, you can find all of our special releases, our beauty category, and our line of lingerie in the Zara app. Other features of the Zara app are: - Favorites: use your favorites list to save all the clothing and accessories that you like. - Order tracking and easy, intuitive, and fast returns. Track your order every step of the way. - Locate the Zara store nearest you. - Activate notifications and receive information about new arrivals, releases, special collections... Store mode - Use the app in “store mode” when you are shopping in one of our stores and utilize all of its features to improve your experience. Zara QR: Use your QR code in the Zara app to: - Have all your online and in-store purchases linked. Identify yourself at the register in the store with your Zara QR and ask for the eReceipt. - Make returns in the store, online as well as in-store purchases. - Pick up all your online orders in the store.
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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
Zustand
React Navigation
Axios
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.
