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
StampCam: Photo Stamp Maker
Turn any photo into a postage stamp and build a visual journal of your life
$5.99
PRICE
$5.99
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.
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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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 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 StampCam: Photo Stamp Maker: 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
Allow users to create their own stamp designs with editing tools
Assumption to check: Limited customization options for stamps
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate social sharing to enhance user engagement
Assumption to check: No user sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Implement advanced sorting and filtering options for saved images
Assumption to check: Basic gallery management
Validate with people who use this workflow before building.
Hypothesis 4
Provide different formats for saving images, like PNG, JPEG, etc.
Assumption to check: Limited export 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
Turn any photo into a postage stamp and build a visual journal of your life. Your personal stamp creator for travels, daily moments, and everything worth remembering. ■ Shoot or Pick a Photo Open the camera and shoot, or pick any photo from your library. StampCam frames it as a stamp with a classic perforated edge. Simple and instant. ■ Multiple Stamp Shapes Classic, Landscape, Square, Circle, Oval, Triangle. Pick the shape that feels right for the moment. Each one looks great in your collection. ■ Sticker Mode Cut out the subject from any photo - a person, a pet, a flower, a food. Turn it into a stamp sticker and keep it alongside your collection. ■ Non-Stop Shooting Mode Keep shooting without stopping. Great for busy moments when you want to capture everything fast - a market, a street, a trip. Shoot first, organize later. ■ Organize into Collections Group your stamps into albums - by trip, by month, by mood, whatever makes sense to you. Everything stays neat and easy to find. ■ Map View See all your stamps pinned on a map. Open it and instantly remember where each moment happened. Perfect for trips and travel memories. ■ Calendar Timeline Browse your stamp journey by day or month. Over time it becomes a visual diary of your life - one stamp at a time. ■ Perfect For: - Travel journals and trip memories - Daily life and everyday moments - Scrapbooks and photo collections - Pen pals and snail mail lovers - Anyone who loves to collect and remember ■ Buy Once, Keep Forever Try StampCam free — no account needed. One payment unlocks unlimited stamps, all shapes, sticker mode, and every future feature. No subscription. No monthly fees. Yours forever.
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
react-navigation
@react-native-async-storage/async-storage
expo-image-picker
expo-sharing
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.
