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
Gpic - 8K Live Wallpaper
in this era that pursues individual expression, the mobile phone desktop, as an important window for us to showcase our personal style, how can it be uniform?
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 2.9
14 ratings · Below Average
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 Gpic - 8K Live Wallpaper: map the core Entertainment 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
Focus on high-quality, curated collections and user-generated content.
Assumption to check: Limited wallpaper selection and often low-quality images.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading with caching and preloading.
Assumption to check: Slow loading times for wallpapers.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a consistent UI design and improve navigation flow.
Assumption to check: Inconsistent user interface and navigation issues.
Validate with people who use this workflow before building.
Hypothesis 4
Add user profiles and customization options for a more tailored experience.
Assumption to check: Lack of personalization features.
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
in this era that pursues individual expression, the mobile phone desktop, as an important window for us to showcase our personal style, how can it be uniform? our wallpaper app is precisely designed to meet your personalized needs and is committed to being your reliable partner in creating a unique mobile phone desktop. our wallpaper library is a huge visual treasure, containing tens of millions of high-definition wallpapers. whether it's the refreshing natural scenery, such as the vast desert, the magnificent sea, or the misty mountains and rivers; it is still an anime world full of fantasy, from popular anime characters to exquisite 2d illustrations. all of them can be found here. choosing our wallpaper app means choosing to pack boundless brilliance and individuality into your phone, allowing your phone's home screen to shine with unique charm anytime and anywhere. 【vip subscription service description】 i. subscription content subscription types: vip auto-renewable weekly (1-week membership), auto-renewable monthly (1-month membership), auto-renewable annual (1-year membership) subscription benefits: - unlock all premium features (ad-free downloading of images/videos to local album) - remove all ad interruptions ii. subscription prices - auto-renewable weekly: $1.99/week - auto-renewable monthly: $2.99/month - auto-renewable annual: $9.99/year note: prices may vary by region. the actual charge will be based on the pricing of your apple id's region. iii. payment and renewal rules payment method: upon confirming the purchase, the payment will be charged to your itunes account. auto-renewal: your apple itunes account will be automatically charged 24 hours before the end of the current subscription period. upon successful payment, the subscription period will be extended by one cycle. cancellation: to cancel your subscription, please follow these steps: open settings on your iphone → tap "itunes store and app store" → tap your "apple id" → select "view apple id" → enter "account settings" → tap "subscriptions" → select the vip subscription of this app → tap "cancel subscription" please note: if you do not turn off auto-renewal at least 24 hours before the end of the subscription period, the subscription will automatically renew. iv. legal terms - terms of service: https://gpic.youpengw.com/index/index/policy?appid=shentuapp&type=privacy&lang=en - privacy policy: https://gpic.youpengw.com/index/index/policy?appid=shentuapp&type=privacy&lang=en
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
react-native-reanimated
expo-image
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.
