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.
Maps 3D PRO – Explore the outdoors in beautiful 3D
$4.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Maps 3D PRO - Hike & Bike: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited offline map capabilities
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Occasional GPS inaccuracies
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Subscription model can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Maps 3D PRO – Explore the outdoors in beautiful 3D Plan, discover, and navigate your next outdoor adventure with maps that reveal the landscape as it really is. Unlike traditional flat maps, Maps 3D PRO lets you explore mountains, valleys, trails, and terrain in immersive 3D, making it easier to understand the landscape before you head out. Whether you're hiking, cycling, trail running, skiing, or simply exploring new places, Maps 3D PRO helps you plan smarter, stay oriented, and—even far from mobile coverage—calculate entirely new routes offline. Professional outdoor maps in 3D Maps 3D PRO combines detailed topographic maps with realistic 3D terrain to give you a better understanding of the world around you. – Beautiful 3D terrain visualization – Detailed outdoor and topographic maps – Smooth map navigation and intuitive controls – Search for towns, streets, mountain peaks, lakes, and more – Worldwide map coverage Plan your adventures Everything you need to prepare for your next trip. – Create and edit routes directly on the map – View elevation profiles before you go – Measure distance and elevation gain – Record your GPS tracks with precise elevation data – Review and analyze completed tours Explore offline Go beyond offline maps. Maps 3D PRO doesn't just let you view maps without a connection—it also lets you calculate entirely new routes offline. Even in remote mountains, forests, or national parks, you can continue planning your adventure without mobile coverage. – Worldwide offline maps – Full offline route calculation – GPS recording with precise elevation data – Offline map search – Reliable navigation anywhere – Save battery by using pre-downloaded maps Import and share Take your adventures with you wherever you go. – Import GPX tracks from many sources – Export recorded routes – Share your adventures with friends and family Trusted by millions of outdoor enthusiasts For more than a decade, Maps 3D PRO has helped more than 2.5 million outdoor enthusiasts explore the world in realistic 3D. Whether you're planning your next hiking trip, cycling tour, or weekend adventure, Maps 3D PRO gives you the tools to explore with confidence. Why Maps 3D PRO? – Realistic 3D terrain for a better understanding of the landscape – Worldwide offline maps for reliable adventures anywhere – Unique offline route calculation—even without mobile coverage – Powerful route planning and GPS recording – GPX import and export – Fast, intuitive, and built specifically for outdoor adventures Award-winning app – Featured by Apple with a main banner in the US App Store Navigation category – 3rd Place – Best App Ever Awards (148Apps), Best Outdoor App – Reached #1 in the Navigation category in more than 75 countries For over a decade, Maps 3D PRO has been one of the world's leading 3D outdoor navigation apps, trusted by millions of hikers, cyclists, runners, skiers, and outdoor enthusiasts. Notes – Continued use of GPS running in the background can reduce battery life. – Download maps before your trip to use all offline features. Thank you for using Maps 3D PRO. We are continuously improving the app and always appreciate your feedback.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.