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.
WorkOutDoors is the most advanced and most configurable workout app for the Apple Watch
$8.99 · 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.
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Combine features and design from your favorite apps.
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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 WorkOutDoors: 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 offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Complexity in navigating workout history
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: High price point for full features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social features
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.
WorkOutDoors is the most advanced and most configurable workout app for the Apple Watch. It's perfect for running, cycling, hiking and any other indoor or outdoor activity. Note: WorkOutDoors requires an Apple Watch Series 4 or later. It is not necessary to have your iPhone with you during a workout. The app uses Apple’s workout system, so all workouts are saved to the Health system. However it also provides many extra features over Apple's app, such as: - a super-smooth vector map that can be shown during a workout; - multiple configurable screens with metrics and graphs from a pool of 800+ data fields; - route files can be imported and used for navigation (including turn by turn directions); - dozens of configurable alerts (e.g. every mile; high heart rate; low pace; off-route etc); - interval schedules can be created using the larger screen of the phone app; - climbs and descents are supported with notifications and on-screen data and graphs; - waypoints can be created, navigated to, and exported; - use shortcuts to associate operations with gestures (e.g. double tap to hear configurable metrics); - compare pace against a target or a previous workout (using metrics and a dot on the map); - show zones for pace and power as well as heart rate (with optional coloured backgrounds); - auto-pause is available for all outdoor activities; - shows GPS and heart rate before starting a workout, so that you can wait for good signals; - configure distance and pace for running / walking to come from Apple’s pedometer or from GPS; - workouts can be exported in FIT / TCX / GPX files, or automatically sent to Strava; - workouts created by the app can be analysed in great depth in the iPhone app. The app also has many more features. The map is a particular highlight. It uses OpenStreetMap, which provides worldwide coverage and includes the trails necessary for outdoor workouts. It also has several features that help you navigate during a workout: - maps can be smoothly panned and zoomed, and can rotate according to the compass; - a breadcrumb trail of your whole route is displayed on the map during the workout; - topographic data can be shown, with configurable contour colours and hill shading; - map-only mode is provided for when you don't want to start a workout and just need a map; - a circular scale is shown when you zoom, making it easy to see the distance to features; - maps can be stored on the watch for use when offline (they are downloaded as required if online); - a red compass points north and a green compass points to the start; - choose a waypoint to see a compass and distance to it in the corner of the map; - you can also navigate to waypoints on the map, such as hospitals, sights, cafes etc. If you load a route from a GPX / TCX / FIT file then navigation is even easier: - your position is shown on an elevation profile of the route; - the remaining distance, time and ascent can also be displayed; - you can get alerted when you go off-route; - when off-route then a compass is shown which points to the nearest part of the route; - if the route contains turn by turn directions then these can be used like a sat nav; - if there are no directions then the app can use “bend detection” to generate them; - the next direction is shown as an icon and distance in the corner of the map; - the map can automatically zoom in when you are approaching a turn; - you can use shake gestures to hear the distance to the next turn or the end of the route; - routes are coloured by gradient: from red for steep uphill to blue for steep downhill; - you can configure what information is displayed during a climb or descent. All this is included for a single one-off payment. No extra in-app purchases or subscriptions are required (although there is a completely optional in-app tip jar which was requested by long-term users). If you own an Apple Watch and do any form of exercise, then WorkOutDoors is the app for you. Give it a go!
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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.