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
West Highland Way Companion
Plan, navigate and remember your West Highland Way adventure with route guidance, detailed elevation information, daily stage planning and an interactive Trail Passport.
$4.99 · In-app purchases
PRICE
$4.99
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.
Build your own version
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/
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 West Highland Way Companion: 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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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 a guided onboarding process to help users understand app features.
Assumption to check: Users may struggle with navigation and finding key features.
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate offline maps and resources for better usability in remote areas.
Assumption to check: Limited offline functionality for trail navigation.
Validate with people who use this workflow before building.
Hypothesis 3
Add features for user reviews and community forums to enhance user interaction.
Assumption to check: Lack of user engagement features such as reviews or community support.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear information about what users get with in-app purchases to improve transparency.
Assumption to check: In-app purchases may not be clearly communicated.
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
Plan, navigate and remember your West Highland Way adventure with route guidance, detailed elevation information, daily stage planning and an interactive Trail Passport. Whether you’re walking from Milngavie to Fort William, heading south from Fort William, or completing individual sections, West Highland Way Companion helps you understand the route ahead and keep track of your journey. PLAN YOUR WALK • Set your start date and daily destinations • See planned distance, ascent, descent and highest point for each stage • Choose miles or kilometres and metres or feet • Plan in either walking direction NAVIGATE THE ROUTE • See your position and progress along the West Highland Way • Get walking guidance back to the nearest trail point • Follow your progress towards today’s destination • Discover landmarks and view diary memories on the map UNDERSTAND EVERY CLIMB • Explore the interactive elevation profile • See ascent, descent and high points ahead • Identify named climbs and their difficulty • Understand where you are on the elevation profile COLLECT YOUR TRAIL PASSPORT • Unlock animated stamps at checkpoints • Follow your stamp progress on the route map • Recover a limited number of stamps you forgot to collect • Keep a lasting record of your journey REMEMBER THE ADVENTURE • Write daily diary entries and add photographs • Export your trail diary as a PDF • Prepare with the included packing list and safety information Location information, plans, diary entries and Passport progress are stored locally on your device. No account is required. West Highland Way Companion is an independent app and is not affiliated with the official management of the West Highland Way.
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 Maps
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.
