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.
The US Federal Governments owns nearly 650 million acres of land - almost 30 percent of the land area of the United States.
$3.99 · 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 US Public Lands: map the core Travel 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 access to maps and data
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Search functionality could be improved
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User interface may feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited social sharing features
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.
The US Federal Governments owns nearly 650 million acres of land - almost 30 percent of the land area of the United States. These are lands that are held for all Americans. US Public Lands allows you to quickly retrieve the boundaries of these properties without carrying physical maps, books, or digging deep online. Included in the app are on-device (fully works offline), individually selectable & beautifully colored map layers for most of the properties administered by the federal government: - Bureau of Land Management (BLM) - US Forest Service (FS) - National Park Service (NPS) - Army Corp of Engineers (ACOE) - US Fish & Wildlife Service - Bureau of Reclamation - Tennessee Valley Authority - Department of Defense (military bases & installations) - Other (National Laboratories, Test Sites, etc...) Key Benefits & Features - Know which US agency owns and operates the land you're on or are heading to. Use the "Layers" icon to select which agencies you want displayed to create your own custom map. (Hint, the toggles are color coded to the color each layer is displayed in.) - Links are provided to each agency's website within the app, so that you can further your research as to what land use rules apply for each public land type - such as permits, fees, activities allowed, and limits of stay. - Map layers are stored on device - no internet connection required. - Be sure to turn on the 'Basic' base map to see the US Public Land labels for each land area. This base map layer is also stored entirely on your device, and can be utilized if you do not have an internet connection or would like to conserve bandwidth. - If you have an internet connection (or have cached them before going out of signal), you can utilize the built in Apple Maps and satellite view maps as the base layer underneath the public land overlays. - A boondocker's assistant - While US Public Lands is not specifically a camp site locator and does not have a database of specific sites, by turning on the satellite view map, you can better scout out trails, roads and signs of dispersed camping locations within the boundaries of the public land resources. - Quickly toggle between 'Show' and 'Hide' via the "Map" icon to more clearly see satellite images below. - If you have GPS access on your device, click the 'Locate Me' icon to show your present location - know what type of land you're on right now! - Built in search tool locates anything on device maps supports (requires internet access) - including cities, states, zip codes, addresses and points of interest. A pin is dropped at the search location. Thank you to the Protected Area Database (PAD-US) of the U.S. Geological Survey for providing the public domain raw map data that we’ve been able to utilize to create this interactive overlayable mapping & navigation tool. We will update our maps in the future to stay in sync with improvements to this data set. Please note, the USGS PAD-US database contains the “most up-to-date aggregation of Federal lands and waters” available, but this database is still evolving and some locations may not be listed and others may not have precisely accurate boundaries. Resolution across the nation may vary. And always remember - there may be private unmapped inholdings within any public lands - so always pay attention to local signage, indications, and information. The US Public Lands app should only be used as an overview, and you should always confirm more precise details by consulting local field offices, administration websites, and other resources. Do not solely rely on this app for determining if you are on public or private land.
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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.