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
planetarian - Dream of Little Star -
"Don't split heaven in two ..."
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
22 ratings · Top 5%
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 included17 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 planetarian - Dream of Little Star -: map the core Books 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
Expand library with user-generated content.
Assumption to check: Limited range of stories available
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the payment flow and provide clearer information.
Assumption to check: In-app purchase process can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate user choices to make stories more engaging.
Assumption to check: Lack of interactive elements in stories
Validate with people who use this workflow before building.
Hypothesis 4
Improve stability and performance through thorough testing.
Assumption to check: Occasional crashes during reading
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
"Don't split heaven in two ..." It is thirty years since a world war put an end to space development. Most of the human race is dead and incessant rain falls on the surface of the Earth. The Junk Hunter earns his living from scavenging precious supplies from abandoned cities. The Junk Hunter infiltrates a Sealed City, reputed to be the most dangerous places on Earth. In the center of the city, he discovers a pre-war Planetarium. Here he is greeted by the companion robot, Yumemi Hoshino. She sincerely believes that he is her first customer in thirty years. She invites him on a "voyage to the stars," but the Planetarium projector malfunctions. After a succession of disjointed conversations, the Junk Hunter grudgingly agrees to fix it. The kinetic novel - a thrilling new form of entertainment. It is neither novel, nor animation, nor game… With the highest quality scenario, graphics, music and direction, it achieves a whole new dimension of realism and pathos for the lead characters. The PC and mobile telephone version of "planetarian - Dream of Little Star" achieved sales of over 50,000. Now it is back to be enjoyed on your iPhone and iPad. Writer: Yuichi Suzumoto Original Images / Mechanic Design: Eiji Komatsu Music: Magome Togoshi This is an application version of the Windows software "planetarian - Dream of Little Star - Memorial Edition for all ages" released on April 30, 2010.
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
Axios
React Navigation
React Native Reanimated
Firebase
BUILD KIT DIFFICULTY
Intermediate
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.
