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.
* View over 70,000 Natural Resources Canada 1:50,000 and USGS 1:24,000 topographical maps on your iPhone or iPod touch
$19.99 · 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 Topo Maps: 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 functionality
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor search accuracy
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Slow performance on older devices
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High subscription cost
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.
* View over 70,000 Natural Resources Canada 1:50,000 and USGS 1:24,000 topographical maps on your iPhone or iPod touch. * Ideal for hiking and other backcountry activities. * Map downloads are FREE! * More than 16 million maps downloaded so far! - iPad owners, please see the app "Topo Maps for iPad". * Users write: " I've bought all the topo map apps and I like this the best " " Scans are gorgeous ... the interface is exceptionally clean " " Downloading maps is easy and fast ... Map displays beautifully and zooms flawlessly " * Includes Canada (at 1:50,000), the contiguous US (at 1:24,000), Alaska (at 1:24,000 and 1:63,360), Hawaii, Puerto Rico and the U.S. Virgin Islands. * Locate the maps you need on the satellite view. To install a map, touch for about half a second. Touch again to view it. * Search by name for over a million towns, peaks, lakes, parks and other features. * No network connection is needed once the maps have been installed. * Mark waypoints, and import and export waypoint files in GPX, KML and CSV formats. * Touch the "current location" button to see where you are, and the compass button to align the map with the ground. * See coordinates in NAD27 or WGS84 degrees, degrees minutes and seconds, UTM, or MGRS formats. * Measure distances (miles, feet and km) and bearings (true and magnetic). The Maps: This app uses high-quality scans of the traditional USGS and NRCan topographic maps which have been the definitive resource for hikers and other backcountry users for many years. You can make the terrain stand out with hill shading, using simulated sunlight from the direction of your choice. In the U.S., this app does not use the new "US Topo" maps because they do not show hiking trails and lack other details: please see the web site for more details. Downloading: US maps are around 8 MB in size and download in a few seconds on a typical home broadband connection. Canadian maps are larger. Both cellular data and WiFi can be used, though WiFi is likely to be more reliable in most cases. - Do please visit https://topomapsapp.com/ for complete instructions, so that you don't miss any features. We have many ideas for additional features to add to future versions of this app; if you have ideas or other questions or comments, contact details can be found on the website, https://topomapsapp.com/. The website also has more screenshots and other information.
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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.