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.
Discover new lakes, what’s in them, and how to get there for your next day of fishing
Free · 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 onX Fish: Midwest Fishing 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Discover new lakes, what’s in them, and how to get there for your next day of fishing. onX Fish combines lake-specific species data, bathymetric maps, and GPS navigation in one intuitive fishing App. Find new spots and identify top-producing lakes with ease. onX Fish currently covers 13 states: Minnesota, Wisconsin, Michigan, Illinois, North Dakota, South Dakota, Indiana, Ohio, Iowa, Missouri, Kansas, Nebraska, and Montana. By blending the best in accurate satellite imagery with map tools that reference up-to-date fisheries data, onX Fish gives you the confidence to explore new opportunities. Fish better water faster with species, “high abundance,” “trophy potential,” “keeper potential,” or high “stocking effort” filters. Know what to expect with Fishing Area Insights and hourly Weather at your fingertips. View regulations to keep yourself informed on new lakes and territories. Check public and private property lines and lake access points before you arrive. Review 3D topo lake maps, check maximum depth, and mark points of interest with Waypoints. Navigate to Waypoints and public access sites hands-free by connecting the App to Apple CarPlay. Download Offline Maps and know how to get back to your access points after dark, even without cell service. Use Tracker to retrace your route and easily organize past trips. A successful day on the water starts with a plan. Cast beyond the familiar with onX Fish. onX Fish Features: ▶ How can I find new lakes to fish with onX Fish? Identify local fishing spots with Lake Finder. Review top fish species and size distribution survey data per lake. Filter lakes quickly by species, abundance, trophy or keeper potential, and high stocking effort. Tap on lakes to view fishery information, like lake features and seasonality. ▶ How can I plan my next fishing trip? View historical species data, hourly weather forecasts, and barometric pressure to determine the best times to fish. Compare CPUE (Catch Per Unit Effort) data and species stocking history. Gain insights on lake structures, bottoms, cover, boat ramps, and public access points. ▶ What type of GPS and offline navigation features does onX Fish have? With onX Fish’s built-in GPS and Route Builder, you can easily navigate on and off the water. Navigate to your next spot hands-free by connecting to Apple CarPlay. Build routes and download Offline Maps to access the details you need without cell coverage. ▶ How can I view land access info and fishing regulations? Use land ownership Map Layers to know where you can fish legally. Review state-specific and special fishing regulations per lake. Find info on Access and Amenities at your lake of choice. Locate boat ramps and set Waypoints to save access points before heading out. ▶ What type of Map Layers does onX Fish have? Find productive waters, view conditions, and see motorized trails with Map Layers. Turn on Fishing Areas to view hotspots with species, seasonal movement, and vegetation info. Forecast conditions with Precipitation Radar, Wind Forecast, and Active Wildfire Layers. Download onX Fish to access the most complete fishing App that offers species, size, and CPUE data with detailed lake maps and GPS navigation. ▶ Free Trial: Start a free 7-day trial when you install the App. ▶ Free Version (No subscription required): Explore the Lake Finder, GPS navigation, offline maps, map layers, and aerial imagery at no cost. ▶ onX Fish Midwest ($34.99/year)—Full access to: • Minnesota, Wisconsin, Michigan, Illinois, North Dakota, South Dakota, Indiana, Ohio, Iowa, Missouri, Kansas, Nebraska, and Montana • Fish species details, distribution, insights, and stocking history • Detailed lake maps and fishing areas • Private lands and landownership info • Recent satellite imagery ▶ Terms of Use: https://www.onxmaps.com/tou ▶ Privacy Policy: https://www.onxmaps.com/privacy-policy ▶ Feedback: Have a problem or want to request new features? Contact us at [email protected]
Written user reviews are not shown here. Check current App Store reviews >
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 capabilities for map access
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent user reviews on navigation accuracy
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of personalized recommendations
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Difficulty in discovering new lakes
Validate with people who use this workflow before building.
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.