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
Mercury Atlas
Explore a 3D globe of Mercury
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 ratings · Top 5%
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/
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 Mercury Atlas: 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
Enhance user engagement with more interactive elements and gamification.
Assumption to check: Limited interactivity with map features.
Validate with people who use this workflow before building.
Hypothesis 2
Provide in-depth descriptions and multimedia for each location.
Assumption to check: Lack of detailed location information.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to save favorite locations and create custom tours.
Assumption to check: Static content with little personalization.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate quizzes or facts to educate users while exploring.
Assumption to check: Not enough 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
Explore a 3D globe of Mercury Using the latest imagery consisting of a global mosaic of this elusive world, Mercury Atlas displays the phase and central meridian of Mercury from your chosen location and time. The feature database contains over 320 currently named features and is searchable. You can switch to a 'Globe' mode that allows you to spin Mercury around to see the whole globe. Use pinch and finger gestures to manipulate a 3D globe of Mercury. As you zoom in more labels appear as finer detail comes into view. You can double tap on the labels to get more information about a particular feature. Date, time and location can be changed. There is also a realtime mode that will update to the current time. The Mercury globe can be shown with north or south at the top or inverted to suit different telescope views and the phase can be switched off to show the whole globe more clearly. You can swipe left and right on the phase view to go backwards and forwards a day. Moon, Mars, Venus, Jupiter and Saturn atlases are also available on the App Store!
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 Navigation
React Native Maps
Expo Image
Expo StatusBar
Redux
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.
