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.
There's never been a better time to get into Astronomy! Start off easy with an app that will guide you around the night sky - and even entertain you a little when the skies are cloudy.
$2.99 · 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 Pocket Universe - Astronomy: map the core Education 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 interactivity in star maps.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent updates on celestial events.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Difficult navigation between content sections.
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.
There's never been a better time to get into Astronomy! Start off easy with an app that will guide you around the night sky - and even entertain you a little when the skies are cloudy. "The app works beautifully, making astronomy a bit less mysterious—but no less remarkable", MacWorld "It’s truly an impressive marvel. 5 Mice out of 5", MacWorld. "..one of the prettiest and easiest to use. And at three bucks, it’s a steal", Cult of Mac. Apple App Store Staff Favorite Voted Best Educational iPhone Application by AppAdvice --- Pocket Universe Have you ever looked up at the night sky, and wondered what exactly you were looking at? Pocket Universe is an easy-to-use app that will help you learn the names of constellations, bright stars, planets and more. You can literally hold up your iPhone, iPad or iPod Touch in front of you, and the app will use the built-in compass to display the same view of the sky you see - but one that's complete with names and information. Then explore the Solar System, and take virtual walks on the surface of the Moon and Mars, before playing a game to help you learn more about astronomy that you thought possible. Every night there is something to see: Pocket Universe will provide you a list of suggestions, as well as give you regularly updated news and observation tips - which you can even share with your friends. You don’t need to be an expert to use Pocket Universe, and everything you see has a useful pop-up information window and links to Wikipedia for the latest information. With over 80,000 stars, beautiful textures, built-in quiz games, updated news, lunar phases, information on the moons of Jupiter and Saturn, an Orrery view, and more, there’s so much to explore. For support or to ask a question, feel free to send a direct message on Twitter to @CraicDesign or email [email protected]. Key Features Pocket Universe was the first iPhone astronomy app to support the built-in compass, and it was also the first to add a true augmented reality view using the iPhone's built-in camera! Use the camera view in the evening or morning sky to overlay the labelled view over the real sky. Simply hold up your iPhone in front of you, and the view will be exactly what you see - but with names and information at your fingertips. Move the iPhone around to see the view change in real-time. Easy-to-use astronomy application, which focuses on helping you answer the question "What's that in the sky?" • Works on all iPhones, iPads and iPod Touch devices running latest IOS • Supports augmented reality views that put the solar system in your living room, or all around you with 3rd party stereo headsets (available separately). • Tracks the International Space Station, and predicts sightings. • Tells you how long every day is, and tracks changes over the year. • Special "Show Me" mode will guide you to named stars, planets, constellations as well as the brightest galaxies and nebulae. • "Tonight's Sky" and "Objects and Events" will keep you up-to-date, and give you suggestions for what to look for when you head outside. • Constellation and Star Quiz to help you learn your way around the sky. • Works in Northern Hemisphere and ‘Down Under’ too. • Links to Wikipedia articles for the latest information. • Responsive customer support, frequent updates. Please note: Network access is only required to view supplementary web-based news and Wikipedia text. This app never transmits data from your device. Note: Non-English localizations focus on solar system objects and constellation names.
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.