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
Space Night Light
A gentle window to the cosmos, where shooting stars and comets drift peacefully to create a relaxing atmosphere before sleep.
$0.99 · In-app purchases
PRICE
$0.99
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.
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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 included12 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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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 Space Night Light: map the core Lifestyle 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
Offer a wider variety of patterns and user customization.
Assumption to check: Limited light pattern options
Validate with people who use this workflow before building.
Hypothesis 2
Include soothing soundtracks to accompany the light patterns.
Assumption to check: No sound options for ambiance
Validate with people who use this workflow before building.
Hypothesis 3
Implement a rating system for users to provide feedback on patterns.
Assumption to check: Lack of user feedback mechanisms
Validate with people who use this workflow before building.
Hypothesis 4
Add a sleep tracking feature to monitor user sleep quality.
Assumption to check: No sleep tracking 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
A gentle window to the cosmos, where shooting stars and comets drift peacefully to create a relaxing atmosphere before sleep. Space Night Light turns your iPhone or iPad into a beautiful bedtime companion. Watch as stars twinkle and comets streak across a stunning space backdrop while a clean, elegant clock displays the time. FEATURES • Mesmerizing Animations Shooting stars appear naturally, while comets occasionally grace the sky. Every night is unique. • 5 Beautiful Backgrounds Choose from Dark Space, Light Sky, Deep Space, Nebula, or Aurora themes to match your mood. • Customizable Clock Display time in 12-hour or 24-hour format, or hide it completely for a pure stargazing experience. • Home Screen Widgets Add small or medium widgets to your Home Screen for a quick glance at the time with your chosen space theme. • Built-in Flashlight Need a little light? One tap activates your device's flashlight. • Screen Always On The display stays on while you drift off to sleep. No interruptions. • Privacy First No data collection. No accounts. No ads. Just you and the stars. Perfect for bedtime routines, meditation, or simply bringing a touch of cosmic wonder to your space. --- Version 2.0 - A Complete Reimagining We've rebuilt Space Night Light from the ground up with a focus on beauty, performance, and new features. NEW FEATURES • 3 New Gradient Backgrounds: Deep Space, Nebula, and Aurora join the classic Dark Space and Light Sky themes • Home Screen Widgets: Add small or medium widgets to see the time at a glance with your chosen theme • Redesigned Settings: Beautiful glass-style interface with smooth carousel for background selection IMPROVEMENTS • Smoother Animations: Stars and comets now animate with improved fluidity • Better iPad Support: Optimized layouts and spacing for larger screens • Adaptive Star Density: Star count now scales based on your screen size for consistent visual density • Faster Launch: Rebuilt with SwiftUI for better performance This update is a thank you to everyone who has supported Space Night Light over the years. Sweet dreams!
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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
React Navigation
Zustand
Axios
React Native Slider
BUILD KIT DIFFICULTY
Starter
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.
