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
Distant Suns 5
Distant Suns: The night sky, reimagined.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
97 ratings · Top 30%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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/
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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.
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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Distant Suns 5: 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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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
Implement comprehensive offline access to downloaded celestial objects.
Assumption to check: Limited offline capabilities for viewing celestial data.
Validate with people who use this workflow before building.
Hypothesis 2
Design an onboarding tutorial to help new users navigate the app.
Assumption to check: User interface can be overwhelming for beginners.
Validate with people who use this workflow before building.
Hypothesis 3
Create a feature that suggests constellations and planets based on user viewing habits.
Assumption to check: Lack of personalized recommendations based on user interests.
Validate with people who use this workflow before building.
Hypothesis 4
Provide detailed descriptions and benefits for each in-app purchase option.
Assumption to check: In-app purchases can be confusing without clear descriptions.
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
Distant Suns: The night sky, reimagined. 2013 finalist in the Family category of TabTimes' best tablet app contest; "I am putting together some mobile astronomy apps for our local "Sky's the Limit" Observatory in Twentynine Palms, CA. I have been searching for something as good as, or better than, Distant Suns. Short answer: I have not found it yet. ...nothing portrays the night sky as well as Distant Suns. Distant Suns has been your personal guide to the cosmos since 1985. First on the desktop, now right in your hands. While others play games, you can travel to the stars. Award-winning Distant Suns has the reputation of both having one of the most realistic displays of the night sky, while being one of the easiest to use astronomy apps for casual sky watchers as well as serious astronomers. •Named in the "100 Essential Apps" by iLounge •Featured on NPR's MarketPlace Features include: •No Internet required. Just a sense of wonder. •View from the Earth or out in the solar system •Simply aim and gaze. •Over 18 million pinpoint stars scintillating like diamond dust in the palm of your hand (18 mil? Yup.) •Integrated with NASA's Night Sky Network space events in your area (US only at present) •What's Up? Gives a quick one snapshot overview of the evening's sky •Realistic ghostly band of the Milky Way •Stories behind each constellation •Viewpoint Lock keeps any object centered •Current weather patterns on the earth, updated daily •Change the look of the stars •Galaxies, nebula and star clusters •Hubble Space Telescope images •All 8 planets (or 9 for you purists) •GPS aware •Special color mode preserves your night vision. •Touch the sky to reveal hidden data for each object •Planetary data and information First Light is a proud member of Moms with Apps, a collaborative group of family-friendly developers with family-friendly apps. Twitter: @distantsuns Support: www.distantsuns.com
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Screenshots
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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
Redux
Axios
react-navigation
expo-camera
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.
