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
My Epic: Skiing & Snowboarding
Here’s how:
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
99,314 ratings · Top 15%
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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 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 My Epic: Skiing & Snowboarding: map the core Sports 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 more detailed trail tracking feature with better analytics.
Assumption to check: Users report difficulty in tracking specific runs or trails.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize the app's performance for data loading and map rendering.
Assumption to check: Some users find the app slow to load during peak times.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the in-app purchase flow and provide clear value propositions for each tier.
Assumption to check: In-app purchase options can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social sharing options and connect with friends for activities.
Assumption to check: Limited social features for sharing experiences.
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
Here’s how: Mobile Pass & Lift Tickets - Scan hands-free at the lift, straight from your pocket and skip the ticket window. Interactive Trail Maps and Lift Wait Times - Always know where to go with maps, GPS location tracking plus real-time and predictive lift line wait times. Personalized Stats - Track your turns with detailed stats that include your vertical feet, lifts taken, resorts visited, highest elevation and distance (enabling GPS tracking required). You can also share and compare your stats with friends and family. Account and Pass Information - View resort access and any Restricted Peak Dates associated with your pass. Mountain and Resort Alerts - Stay informed with operational updates including grooming reports, terrain and lift statuses, snow reports, and more. Ski Patrol Assistance - Get direct access to ski patrol during an emergency with your GPS location, ensuring your safety on the mountain. Weather Updates and Snow Cams - Keep your eye on the mountain and stay ahead of changing conditions with weather updates and live snow cameras. Epic Mountain Rewards - Take advantage of your benefits through your phone, with exclusive savings for Epic Pass Holders. Resort Charge - Make payments on the mountain with ease, by paying directly through the app. Mobile Pass & Lift Tickets are available at all these resorts: Vail Mountain, Whistler Blackcomb, Beaver Creek Resort, Breckenridge Ski Resort, Keystone Resort, Crested Butte Mountain Resort, Park City Mountain, Stevens Pass Ski Resort, Kirkwood Mountain Resort, Northstar California Resort, Heavenly Mountain Resort, Mount Snow Resort, Stowe Mountain Resort, Okemo Mountain Resort, Hunter Mountain, Mount Sunapee Resort, Attitash Mountain Resort, Wildcat Mountain, Crotched Mountain Ski & Ride, Liberty Mountain Resort, Roundtop Mountain Resort, Whitetail Resort, Jack Frost Big Boulder, Seven Springs Mountain Resort, Hidden Valley Resort, Laurel Mountain, Wilmot Mountain, Paoli Peaks, Snow Creek Ski Area, Hidden Valley Ski Area, Brandywine Ski Resort, Boston Mills Ski Resort, Mad River Mountain, Mt. Brighton Ski Area, Afton Alps Ski Area and Alpine Valley Ski Area.
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
react-native-maps
@react-native-async-storage/async-storage
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.
