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
Star Tracker Lite-Live Sky Map
Hey, get outdoor with your friends and start star gazing! Let StarTracker guide you to explore the universe.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
2,128 ratings · Top 15%
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 Star Tracker Lite-Live Sky Map: map the core Reference 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
Provide offline access to star maps and information.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more user-friendly ad experience with a premium option.
Assumption to check: Too many ads
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the UI for better navigation and usability.
Assumption to check: Cluttered interface
Validate with people who use this workflow before building.
Hypothesis 4
Include more information about constellations and stars.
Assumption to check: Lack of detailed educational content
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
Hey, get outdoor with your friends and start star gazing! Let StarTracker guide you to explore the universe. Just hold up and point the device to the sky and have fun! You can see any stars, constellations and deep sky objects you are watching in reality. ======================== What our user said: "Best star gazing app I've ever used. Very well put together and great visuals!!! From end to end this app is a must-have for anyone interested in astronomy!!" "This app is a marvel of technology, art, and science. Super smooth operation, great graphics and a great merging of the devices capabilities. Having grown up using star charts and compasses, this app feels like science fiction come to life. Great job!" "Looking at the sky was never this incredible!" "If you download only one app, make sure it's this one!! This is one of the best apps I've ever seen, period! Its quality is unmatched among star gazing apps!" ======================== Features: • All data is offline! • Sun, Moon, planets, 88 Constellations and 8000+ stars visible to the naked eyes. • 12 Zodiac Constellations Art & 6 famous deep sky objects with magnificent graphics. • 3D compass in AR mode, indicate position of objects your searched. • Location auto set by GPS, or set manually. • Auto hide all menus and enter AR track mode when lift up the device and point to sky. • Smooth motion flow and quick response which is realized by cutting edge signal processing technique. • Superb high quality graphic display by enabling the retina display of the device and the full screen anti-aliasing technology employment. Pro version: • Full 88 Constellations & 100+ deep sky objects with magnificent graphics. • Search and guide you to stars, constellations, planets and deep sky objects. • Time Machine menu and location menu to encourage children to exploring more on time and location dimension. • Night mode switch, to protect children's eye when doing star gazing outdoor. Usage: • Top Left: Location Menu, choose location from a world map. • Buttom Left: AR Compass indicator in AR track mode, pan the screen to enter un-track mode and click track button to back. Tips: • When under un-track mode, just lift up the screen and point it to the sky to enter AR track mode.
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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.
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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.
