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
Pictures Collage
**Pictures Collage** helps you turn your favorite photos into beautiful, creative collages in just a few taps.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
2 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 included18 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 Pictures Collage: 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.
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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
Offer advanced editing tools like filters, stickers, and text effects.
Assumption to check: Limited editing functionalities for collages
Validate with people who use this workflow before building.
Hypothesis 2
Implement image compression and optimization features.
Assumption to check: Poor performance with large images
Validate with people who use this workflow before building.
Hypothesis 3
Integrate more social media platforms for easy sharing.
Assumption to check: Lack of social sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Add features like following users, commenting on collages, and sharing collages in a community feed.
Assumption to check: Low user engagement due to lack of community 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
**Pictures Collage** helps you turn your favorite photos into beautiful, creative collages in just a few taps. Select your photos, choose a layout, pick a background color, and let the app automatically place your pictures onto a large collage canvas. You can also adjust each photo by moving, zooming, and centering it inside the frame, so faces and important details look just right. Create classic photo grids, stylish scrapbook layouts, heart-shaped collages, family memory boards, travel collages, birthday photo designs, and more. **Key Features:** * Select multiple photos from your library * Smartly arrange photos on a large canvas * Choose from different collage layouts * Create heart-shaped photo layouts * Move and zoom each photo inside its frame * Center important people or objects * Adjust spacing and rounded corners * Preview your final collage * Save or share your collage image * Create Calendar with Photos Collage at the top of Calendar *. Support various layout and also different shape such as heart shape, circle, tree, apple shape Pictures Collage is great for family memories, travel photos, kids’ pictures, birthdays, holidays, social posts, wallpapers, and keepsake photo designs.
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
axios
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.
