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
GoSatWatch Satellite Tracking
Real time satellite tracking on your iPhone, iPad or iPod touch
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.6
60 ratings · Top 50%
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 included19 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 GoSatWatch Satellite Tracking: 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 more comprehensive satellite data, including historical tracking and advanced filters.
Assumption to check: Limited satellite information and details.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner UI design with better organization of information.
Assumption to check: User interface is cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance transparency in subscription benefits and provide a better onboarding experience.
Assumption to check: Subscription model may not be clear.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize data handling for smoother real-time updates and notifications.
Assumption to check: Performance issues with real-time updates.
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
Real time satellite tracking on your iPhone, iPad or iPod touch. Find out when and where any satellite including the international space station can be seen from any location in the world. Easily identify satellites seen in the sky with real time tracking. SpaceX spacecraft Crew Dragon, Dragon CRS and Starlink included. Can also be used to accurately determine dish orientation for geostationary satellites using iPhone GPS location. Features: - World map view with orbit track - Overhead sky track view - Visible and 24 hour pass predictions - Pass alerts - Supports landscape or portrait orientation - One touch orbit data update - Customizable satellite sets - Easy setup using Apple location or city list * Requires occasional data network or WiFi access to update satellite orbital data. See web site for more information.
Written user reviews are not shown here. Check current App Store reviews >
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
Supabase
react-navigation
react-native-maps
zustand
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.
