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
3D Astronomy : Celestial Globe
LOSING SLEEP? WELL, LET'S COUNT STARS!
$1.99 · In-app purchases
PRICE
$1.99
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
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.
JavaScript is required to complete mailbox verification.
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 3D Astronomy : Celestial Globe: map the core Reference workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Provide guided tutorials or tooltips to assist users.
Assumption to check: Users may find the 3D interfaces overwhelming or difficult to navigate.
Validate with people who use this workflow before building.
Hypothesis 2
Include more detailed information and interactive elements.
Assumption to check: Limited interaction options with celestial bodies.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a clear paywall and information about premium features.
Assumption to check: In-app purchase may not be clearly communicated.
Validate with people who use this workflow before building.
Hypothesis 4
Add social sharing options and user-generated content.
Assumption to check: Lack of user engagement features.
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
LOSING SLEEP? WELL, LET'S COUNT STARS! 6 IN 1, PRETTY GOOD DEAL! THE SOLAR SYSTEM AND PLANETS ARE ALL IN 3D! FEATURES: • STAR GLOBE • PLANETARIUM • PLANETS • MOON & MARS MAP • LANDING SITES & DATES ON THE MOON AND MARS • CALCULATIONS OF EQUINOXES AND SOLSTICES • NEW MOON & FULL MOON CALCULATIONS • EARTH-MOON RELATIVE MOVEMENTS DEMO • SOLAR SYSTEM DEMO • CONSTELLATIONS WITH SOUNDS AND BUTTERFLIES • SYSTEM LANGUAGE: ENGLISH CHINESE RUSSIAN JAPANESE KOREAN GERMAN FRENCH MALAY ARABIC INDONESIAN DETAILS: • YOU CAN LET THE STAR GLOBE INSIDE-OUT. • THE STAR GLOBE IS IN MULTIPLE LANGUAGES, WHICH CAN BE SWITCHED WITHIN THE APP CONVENIENTLY: ENGLISH CHINESE RUSSIAN JAPANESE KOREAN GERMAN FRENCH • WHEN YOU CLICK A STAR IN THE CONSTELLATION MAP, IT PLAYS THE SOUND OF THE STAR’S NAME, AND IN THE MEANWHILE A BEAUTIFUL BUTTERFLY DANCES TO THE SOUND. THERE ARE ONLY THREE COUNTRIES THAT SUCCEEDED IN MAKING SOFT LANDING ON THE MOON. THEY ARE USA, THE SOVIET UNION, AND CHINA.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Supabase
react-navigation
expo-three
@react-native-async-storage/async-storage
BUILD KIT DIFFICULTY
Advanced
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.
