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.
3D Light Visualization for Outdoor & Night Photographers
$11.99 · 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 Photographer's Ephemeris 3D: map the core Photo & Video 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 often find the interface complex and overwhelming.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization for notifications.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Performance can lag on older devices.
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.
3D Light Visualization for Outdoor & Night Photographers See exactly how natural light will fall on the land — day or night, anywhere on Earth. TPE 3D helps outdoor photographers plan their shots with realistic 3D terrain, sunlight, moonlight, and Milky Way simulation. Now with high-resolution map tiles, faster GPU-powered terrain, and improved controls for a smoother experience. "TPE 3D predicted the light in the distance in the gap just before the right most hill very accurately." - OnLandscape Magazine "This app has become an indispensable tool in my planning kit, I highly recommend it!" - David Kingham, Exploring Exposure Watch a sunrise from the future in a rich simulation of sunlight, moonlight and starlight set against the actual topography of your planned shooting location. Need to see when the arch of the Milky Way will rise between two mountain peaks? Need to see what time in the afternoon the valley will lose direct light in September? Watch the light unfold under clear skies hours, days, weeks or years before you're on location. Visualize Light - 3D terrain with realistic Sun, Moon, and Milky Way simulation - Accurate moon phases rendered in-scene - Symbolic Milky Way in Flying mode, high-resolution stars in Enhanced mode - Ambient and overall lighting brightness tuned for clarity - Night map colors automatically desaturated for legibility Plan Your Shoot - Continuous Sun, Moon, and Galactic Centre timeline with rise/set/transit events - Daily and annual event lists - Location search, decimal/DMS coordinate entry, and shared database with TPE - Multiple map pins with saved “at pin” state remembered between sessions - Tutorials linked directly to our YouTube channel Control the View - Fly smoothly around your scene, or zoom to focal-length equivalents - Enhanced mode with maximum terrain and shadow detail - Camera pitch, bearing, and direct elevation controls - Reworked two-finger gestures for more precise navigation - Higher default zoom near the camera in Enhanced mode (modern devices) - High-resolution map tiles (512px) when not flying - GPU-accelerated terrain loading for faster performance If you like to plan your natural light photography to capture the photo opportunities others miss, TPE 3D is a must-have tool! Note: TPE 3D is graphics-intensive — newer devices provide the best experience. Terrain resolution ~30m (1 arcsecond). Satellite maps and buildings are not included. Coverage 83°N–83°S. Internet connection required. Eclipse simulations not supported.
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.