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.
Shade Compass shows you exactly where the sun is, where your shadow falls, and where to stand to find shade — wherever you are, at any hour of the day.
$0.99 · 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 Shade Compass: map the core Utilities 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: Users may find the compass difficult to interpret.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inaccurate location data can lead to incorrect shade calculations.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited functionality compared to other weather apps.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Paywall may frustrate users after initial uses.
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.
Shade Compass shows you exactly where the sun is, where your shadow falls, and where to stand to find shade — wherever you are, at any hour of the day. Point your phone and the live compass orients to the world around you. The sun's current direction and height sit right on the dial, your shadow is drawn opposite it at its true length, and sunrise and sunset are marked at the exact bearings they'll cross the horizon. Drag the time scrubber and watch the sun arc across the sky and your shadow swing and stretch through the whole day — perfect for planning a campsite, a photo shoot, a garden bed, or just the shady side of the patio. SEE SHADE IN AUGMENTED REALITY • Point your phone and watch the sun's real path trace across your actual surroundings • Drop a person, vehicle, tree, canopy, umbrella, or any object and see its true cast shadow on the ground • Play a sunrise-to-sunset time-lapse and watch the shadows sweep across the scene • Garden Mode: place several objects, tap any spot to read its hours of direct sun, and view a full sun-and-shade map of the area EVERYTHING YOU SEE AT A GLANCE • Live compass that tracks your heading in real time • Sun direction and altitude, updated continuously • Shadow direction and length, drawn to scale against your height • A live moon tracker with its real phase and bearing on the dial • Sunrise and sunset times AND the exact compass bearings they occur at • A 24-hour time scrubber to preview the sun and your shadow at any moment today • UV index, wind, and chance of rain, plus a 7-day outlook • A buzz when your facing arrow lines up with the shade, so you can rotate to it without looking BUILT FOR THE OUTDOORS • Core sun and shadow math works fully offline — no signal required • Search 200+ cities offline, or use your current location • Save your favorite spots • A sky that shifts with the time of day, with stars at night INCLUDES AN APPLE WATCH APP One purchase covers both. The watch app puts the full compass on your wrist, and a complication shows your sunrise and sunset bearings and times right on your watch face — tap it to open the compass. No ads. No accounts. No tracking. No data collection. Just the sun, your shadow, and the information you have been seeking.
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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.