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.
Track every stand up paddleboarding session with GPS, Apple Watch stroke detection, weather scoring, HealthKit sync, widgets, and gear stats.
$1.99 · 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 SUP Tracker: Paddle GPS: map the core Health & Fitness 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 workout types; only focused on paddleboarding.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social features for sharing achievements.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Basic analytics, lacks detailed insights.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Paywall is not clear after initial sessions.
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.
Track every stand up paddleboarding session with GPS, Apple Watch stroke detection, weather scoring, HealthKit sync, widgets, and gear stats. Pay once. No subscription. Track your distance, duration, speed, route, calories, heart rate, strokes, weather conditions, equipment, photos, and progress over time. Whether you are heading out for a relaxed cruise, training for better performance, or building a personal logbook of days on the water, SUP Tracker helps you keep the full story of every session. Built for iPhone and Apple Watch, SUP Tracker saves workouts to Apple Health, shows detailed maps and stats, tracks your boards and paddles, and helps you decide when conditions are right with weather forecasts and a custom SUP Score. Features: Accurate session tracking with distance, duration, speed, route, calories, and heart rate Apple Watch support, including paddle stroke detection and stroke balance Apple Health integration for secure workout storage and activity history Detailed session history with maps, stats, equipment, achievements, and photos Workout photo support, including hero images and richer memories Share cards with route, stats, strokes, equipment, map, or photo backgrounds Weather integration with current conditions and a 3-hour forecast SUP Score to help estimate paddleboarding conditions from wind, gusts, waves, and weather SUP Levels to track long-term progress and milestones Equipment tracking for boards and paddles, including usage and performance stats Home screen widgets for quick access to stats, progress, and recent sessions Watch face complications for glanceable paddle stats Customizable distance units, map style, haptics, equipment defaults, and watch wrist setting Accessibility support with Dynamic Type and VoiceOver-friendly layouts SUP Tracker is designed specifically for stand-up paddleboarders, with the tools you need before, during, and after every trip.
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.