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.
Log every catch in seconds.
$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 Simply Fishing: map the core Lifestyle 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 fishing tips and advice
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social features for sharing catches
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Potential lack of offline functionality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic UI design may deter some users
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.
Log every catch in seconds. Plan around peak fish activity. Fishing data from federal and state agencies — built right in. Simply Fishing turns a couple of taps into a permanent fishing log, and pairs it with the kind of data anglers used to need a half-dozen apps and browser tabs to assemble. Built by one angler for everyone who'd rather be on the water than hunting for boat ramps and stream gauges. KNOW WHEN TO FISH • Solunar peak periods (major + minor) computed for your location • Moon phase with rise + set times • Sunrise, sunset, twilight, day length • Hour-by-hour weather: temp, wind, pressure, precipitation • 24-hour rain-chance graph so you can plan around showers • Calendar view rates every day at a glance — tap the rating to see how it was calculated LOG EVERY CATCH • Fish photo + bait/lure photo per catch • GPS auto-pin or long-press to drop one manually • Notes for species, size, conditions, what worked • 1-5 rating with fish pips • Weather snapshot + water body captured automatically on every save • Edit, delete, or move pins after the fact BROWSE THE WHOLE SEASON • Photo-grid catch log filterable by water, location, and date • Stats page — top species, most-fished waters, current streaks • Full-screen photo viewer with pinch to zoom FISHING DATA, BUILT IN Roughly 90 map layers across 44 state agencies and 5 federal sources, all toggleable from the map filter panel: National coverage (works in every state) • USFWS — public-recreation access easements • National Park Service — POIs and trails • Bureau of Land Management — boating sites and trailheads • U.S. Forest Service — recreation sites, NFS trails, Wild & Scenic Rivers, fish-passage surveys, forest boundaries • USGS — National Hydrography Dataset (lakes, rivers, stream gauges) and Watershed Boundary Dataset State coverage spans 44 states Highlights include Arkansas fishing waters and boat ramps, Oregon species-specific habitat, Wisconsin trout streams, California fish planting sites, Texas WMAs, Michigan DNR, plus dozens more state fish, wildlife, and conservation agencies. All data comes from official government ArcGIS REST services. TAP THE RULEBOOK One-tap access to your state's official fishing regulations page. Simply Fishing detects where you are and links to the right agency — Arkansas Game & Fish, California Fish & Wildlife, Alaska Fish & Game, all 50. Star your states to pin them to a Favorites section that syncs via your iCloud. ON EVERY DEVICE YOU OWN One purchase covers iPhone, iPad, Apple Watch, and Mac. Catches, favourites, and now your °F/°C preference all sync automatically through iCloud. YOUR DATA, YOUR DEVICE No account to create. No tracking. No ads. No social feed. Catches sync between your devices through your iCloud, never through our servers. Built for the angler who wants to fish, log it, and look back at the season — not curate a profile.
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.