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
Wallpapers Backgrounds HD PRO
:::: ONLY 50% DISCOUNT TODAY ::::
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
96 ratings · Top 15%
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 Wallpapers Backgrounds HD PRO: map the core Lifestyle 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
Provide a wider variety of wallpapers including user-generated content.
Assumption to check: Limited wallpaper selection compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading with lazy loading and caching.
Assumption to check: Inconsistent image loading speeds
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the settings interface for better user experience.
Assumption to check: Cluttered settings menu
Validate with people who use this workflow before building.
Hypothesis 4
Implement easy sharing features to social media platforms.
Assumption to check: Limited sharing 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
:::: ONLY 50% DISCOUNT TODAY :::: Customize the wallpaper of your device as you want and to your liking. In addition, this application is designed for you to see it as it will look on your device and has been developed by the best design and interface programming specialists with many years of experience in the development of iOS apps. Remember that once you buy the HD Wallpapers Pro app, you have it for ALWAYS !. With all your updates FREE. Now with COMMUNITY so you can share all your creations! Press likes, save in favorites, follow your friends and much more ... Main features: - New community - Home Screen Maker screen - Screen Lock Screen Maker - Add calendars layer - Added Blur Wallpapers - Added Brushes - Preview the wallpaper in Home Screen and Lock Screen - Wallpapers adapted for iPhone and iPad - Backgrounds in high definition (HQ) - Send by mail any fund - Save in your photo album of all the backgrounds you want You can choose from hundreds of images. All the photographs are organized by Categories so you can do your searches better. What are you waiting to download?
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
Supabase
react-navigation
@supabase/supabase-js
react-native-reanimated
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.
