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
Eclipse Navigator
Eclipse Navigator helps you prepare to watch and photograph a solar eclipse
$2.99
PRICE
$2.99
No 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 included16 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.
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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 Eclipse Navigator: map the core Travel workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Eclipse Navigator helps you prepare to watch and photograph a solar eclipse. Find a suitable viewing spot, check the local conditions and see how the eclipse will unfold there. Plan your photos and rehearse with spoken alerts, so you can focus on what you want to see and capture during the eclipse. CHOOSE YOUR VIEWING SPOT Explore the eclipse path and see where totality lasts longest. For each location, find out when the eclipse begins, how long it lasts and how much of the Sun will be obscured. You can also check the Sun’s position and whether hills will block your view. COMPARE YOUR CHANCES OF A CLEAR VIEW What are conditions usually like at your viewing spot around the time of the eclipse? Eclipse Navigator combines 25 years of cloud cover and aerosol data, including dust and air pollution, to show average conditions for the date and time of the eclipse. This lets you compare locations based on the conditions you would typically expect. You can also view current cloud cover and aerosols on the map. FOCUS ON YOUR PHOTOGRAPHY Use the countdown to set spoken alerts for your photography session. For example, set reminders for when you want to remove your camera’s solar filter and put it back on. You choose when each alert sounds and what it says. That way, you can concentrate on taking photos without constantly checking the time. REHEARSE YOUR PHOTOGRAPHY SESSION Simulate the entire solar eclipse at your chosen location, including all your spoken countdown alerts. Practise your sequence, check the timing and adjust your alerts as needed. You can speed up or slow down the simulation. On eclipse day, you’ll know what to do and when. AR PHOTO MODE Use augmented reality photo mode on location to see where the Sun will be in the sky during the eclipse. Point your phone at your surroundings: the app overlays the Sun’s positions on the live camera view. Move around to find the right spot, for example where the Sun will sit directly above a church tower during totality. View the five eclipse phases or play through the entire solar eclipse to see how your composition changes as it unfolds. FOLLOW THE ECLIPSE LIVE During the eclipse, follow the current phase and the moving Moon’s shadow in the live view, with information for your chosen location.
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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 user-generated content and regularly update destination details.
Assumption to check: Travel apps often lack up-to-date information.
Validate with people who use this workflow before building.
Hypothesis 2
Include features for easy trip planning and modifications.
Assumption to check: Difficulty in managing itineraries.
Validate with people who use this workflow before building.
Hypothesis 3
Enable offline access to saved destinations and itineraries.
Assumption to check: Limited offline access to information.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate in-app messaging for better interaction.
Assumption to check: Inadequate communication between users and service providers.
Validate with people who use this workflow before building.
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/native
axios
zustand
@react-native-maps
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.
