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.
Tens of thousands of people around the world use My Zipcode to instantly find their zip code in one tap.
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for My Zipcode - Find Zipcodes: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited offline functionality for zipcode lookup
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Search results can be inaccurate or slow
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Too many ads in free version
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No ability to save favorite locations easily
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Tens of thousands of people around the world use My Zipcode to instantly find their zip code in one tap. My Zipcode is a revolutionary app that makes finding your zip code one tap away: - Find the Zip Code of any location through the beautiful search interface - Find the local phone area code and country code of anywhere in the world, a feature EXCLUSIVE to My Zipcode - Intuitively designed interface, built for every device - Fantastic today widget to find zip code from anywhere in iOS, without needing to open up the app - Get other useful information such as latitude and longitude immediately - Share your zip code and location conveniently with Google Maps - Shake to dismiss keyboard - Ad free - Full iOS 13 support - Full iPhone 11 Pro Max, 11 Pro, and 11 support My Zipcode has had significant accolade (see below) since it launched in early 2014. Here's what people are saying about My Zipcode: “Very nice app with a very nice interface." - Oesop on the App Store "I use it often when I am traveling, gives my clients the impression that I know what I am talking about." - My Zipcode user *************************************** Top Charts In: U.S.A, UK, Spain, Sri Lanka, Colombia, Russia, Chile, Taiwan, South Korea, South Africa, Malta, Singapore, Spain, Indonesia, Ireland, Hungary, Australia, Ireland, Netherlands, France, Sweden, Italy, Switzerland, Germany, Argentina, Guatemala ***************************************
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.