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
Drop Shadow Pro
Instantly elevate your photos with professional drop shadows and perfect backgrounds using Drop Shadow Pro!
$2.99
PRICE
$2.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included15 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 Drop Shadow Pro: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
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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
Include advanced editing options like AI background removal and batch processing.
Assumption to check: Limited editing features in photo editing apps
Validate with people who use this workflow before building.
Hypothesis 2
Design a clean, minimalistic UI with clear icons and labels.
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Offer cloud backup for saved projects and edits.
Assumption to check: Lack of cloud backup
Validate with people who use this workflow before building.
Hypothesis 4
Implement non-destructive editing with layer support.
Assumption to check: Non-destructive editing is often missing
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
Instantly elevate your photos with professional drop shadows and perfect backgrounds using Drop Shadow Pro! Designed for creators, marketers, and anyone who wants their images to stand out, Drop Shadow Pro provides powerful editing tools in a simple, intuitive interface. Create depth, add context, and frame your shots beautifully – all without ads or subscriptions. Key Features: • Advanced Shadow Control: Fine-tune every aspect of your drop shadow: X/Y offset, blur radius, spread (via corner radius), opacity, and colour. • Versatile Backgrounds: Go beyond plain white! Select from essential solid colours or apply stunning gradients to perfectly complement your photo. • Essential Transform Tools: Precisely scale your image and instantly switch between standard aspect ratios to fit any platform or need. • Elegant Corner Radius: Easily apply rounded corners to soften your image for a modern aesthetic. • Focus on Quality: Enjoy a smooth, ad-free experience and export high-resolution results ready to impress. Whether you're prepping images for Instagram, designing marketing materials, or just want your photos to look their best, Drop Shadow Pro delivers the tools you need without the complexity. Get professional results, the simple way. Download Drop Shadow Pro now!
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-slider
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.
