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.
Explore a 3D globe of the Moon
$5.99 · 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 Moon Atlas: map the core Reference 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 interaction with lunar features
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of user-generated content
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inadequate educational resources
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.
Explore a 3D globe of the Moon Moon Atlas is an astronomy application that lets you use pinch and finger gestures to manipulate a 3D globe of the Moon. This is a rendered sphere and not a static map image. As you zoom in more labels appear as finer detail comes into view. You can double tap on the labels to get more information about a particular feature. Moon Atlas displays the phase and libration of the Moon from your chosen location and renders these on the globe. You can switch to a 'Globe' mode that allows you to spin the Moon around to see far side features. The feature database is searchable and can move the globe to a searched feature. The phase can be switched off and the far side is shown in a slightly darker shade of grey. Date, time and location can be changed. There is also a realtime mode that will update to the current time. The Moon globe can be shown with north or south at the top or inverted to suit different telescope views. Over 1800 named features are included as well as 26 spacecraft that reached the surface of the Moon. In addition, information about the current Moon phase and libration are provided. You can swipe left and right on the phase view to go backwards and forwards a day and on the libration chart to go backwards and forwards a month. Mars, Mercury, Venus, Jupiter and Saturn atlases are also available on the App Store! Also there is Planisphere, a star charting app, available on the App Store!
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.