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
The Wanderers' Almanac
The Wanderers' Almanac is a focused planetary observing companion for visual astronomers, telescope users, and anyone who wants a simulated view of what the planets are doing right now.
$2.99 · In-app purchases
PRICE
$2.99
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 included15 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 The Wanderers' Almanac: 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
Focus on providing unique, lesser-known destinations.
Assumption to check: Limited content and destination variety in travel apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement personalized recommendations based on user preferences.
Assumption to check: User engagement drops due to lack of personalization
Validate with people who use this workflow before building.
Hypothesis 3
Streamline navigation with a clear, simple layout.
Assumption to check: Difficult navigation in apps with many features
Validate with people who use this workflow before building.
Hypothesis 4
Offer compelling subscription tiers with exclusive content.
Assumption to check: High churn rate due to poor monetization strategies
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
The Wanderers' Almanac is a focused planetary observing companion for visual astronomers, telescope users, and anyone who wants a simulated view of what the planets are doing right now. Browse interactive views of the major planets, adjust time forward or backward, and see changing planetary geometry in context. For supported worlds, The Wanderers' Almanac shows natural satellite positions, shadow events, observer-based ephemeris details, and visual orientation controls for matching the view through your telescope. Features include: Major moon positions for Mars, Jupiter, Saturn, Uranus, and Neptune Moon labels and shadow-state indicators Interactive time control Jupiter Great Red Spot transit predictions Real-time planetary ephemeris data Earth and Sun distance data Earth light-time display Rise, transit, and set information based on observer location Apparent magnitude, angular size, RA/Dec, altitude, and azimuth Mirror controls for telescope orientation Dark, observation-friendly visual design The Wanderers' Almanac is built for nights at the eyepiece: compact, visual, and practical, with the details you need close at hand.
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
React Navigation
Axios
React Native Paper
Supabase
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.
