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
StayFree: Vanlife Wild Camping
StayFree: the ONLY app to find the most beautiful camping & vanlife spots all around the world - fast, easy and for free!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.2
173 ratings · Top 30%
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/
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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 StayFree: Vanlife Wild Camping: 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 offline caching for camping spots and user data.
Assumption to check: Limited offline functionality, causing issues in remote areas.
Validate with people who use this workflow before building.
Hypothesis 2
Add guidelines and moderation for reviews.
Assumption to check: Inconsistent user-generated content quality.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate map functionalities with GPS directions.
Assumption to check: Difficulty in navigating to remote locations.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance search features with more filter options.
Assumption to check: Lack of customization options for search filters.
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
StayFree: the ONLY app to find the most beautiful camping & vanlife spots all around the world - fast, easy and for free! ● Time to go on camping! Search in 100.000+ wild-camping locations, parking areas, RV-Parks, motorhome sites, overnight parking, and campsites added by app users or StayFree team - public or shared only with friends. Where will you camp tonight? Wake up to breathtaking views in Yosemite, park under the stars in Utah’s desert, or find a cozy lakeside spot in Michigan. → Use 50+ filters to find the perfect site, check reviews, and plan your ultimate road trip. ● Decided?! -> Start the navigation with only one click and let us guide you to the chosen destination! ● Already on a vanlife road trip? Track all your campng roadtrips and make your adventures unforgettable with our travel tracker. StayFree Vanlife App for all campervan & caravan travelers: -> Browse huge base of wild camping, parking spots, RV-Parks, and campsites - find all kinds of spots for your motorhome trip -> Add new camper spots -> Filter all vanlife camping spots with 50+ filters -> Easily share camping spots with your friends -> Create spot lists & plan your perfect road trip -> Track all your camping road trips -> Find service points near you -> Review all campsites you were staying at and help other campers find the perfect place for a night -> Protect the best wild camping spots & nature in the UK by sharing them only with your friends and not public -> Clean up the wild camping spots ● STAYFREE COMMUNITY StayFree it's not only the database with campgrounds or wild stopovers for motorhome holidays. - Meet other vanlife & camper road trip enthusiasts - Create your profile, and describe yourself and your camper. Meet other camper lovers, watch their moments, and share your camping experiences with them. - Share your camping passion, make new friends, and share your best wild camping spots only with them. - Earn the latest badges in our vanlife app by discovering places, creating journeys, and making check-ins – be a true Explorer, Globetrotter, or Scout. ● CLEAN-UP Let's make the world a little bit a better place by living the camper lifestyle with the most possible responsibility! No matter where you spend the night with your campervan, always take care of your closest area - do not leave any trash, and always leave wild camping spots better than you found them. How the Clean-up works? -> Take a bag and collect the trash you see & share a photo of it in StayFree to inspire other motorhome travelers to do the same. ● JOIN STAYFREE PREMIUM: -> Create camping spots lists -> Add private spots -> Travel Tracker: follow your all your road trips -> Create wishlists -> Explorer 600 Premium Spots -> Enjoy special discount for selected partners (camping online shops) -> No ads -> Translator ● CAMPER TEAM: We started StayFree because we needed it. We knew there must be a way to connect all wildness lovers who love to travel and believe in a green present and future. If you have any questions or comments contact us: [email protected] We wish you many beautiful vanlife moments! StayFree Team PRIVACY POLICY: https://happybyte.app/apps-static/stayfree/sf_privacy_en TERMS OF SERVICE: https://happybyte.app/apps-static/stayfree/sf_tos_en
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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.
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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.
