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.
App Overview
Lighting Toolbox
Lighting Toolbox is the professional calculator app built for lighting designers, touring engineers, and production technicians
$19.99 · In-app purchases
PRICE
$19.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included14 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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.
JavaScript is required to complete mailbox verification.
Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Lighting Toolbox: map the core Utilities workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Implement a feedback system for users to rate tools.
Assumption to check: Limited user feedback and reviews
Validate with people who use this workflow before building.
Hypothesis 2
Provide guided tutorials or tooltips to help users understand how to use each tool.
Assumption to check: Complexity in tool usage
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize settings and preferences to suit their needs.
Assumption to check: Lack of customization
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Lighting Toolbox is the professional calculator app built for lighting designers, touring engineers, and production technicians. Ten powerful tools in one app, designed for on-site and pre-production use. Every tool gives you instant results with zero lag. No internet required — works completely offline, on the plane, in the venue, on the truck. TOOLS INCLUDED: • Lighting — ArtNet universe calculator, reverse ArtNet lookup, and RGB/RGBW pixel mapping. Enter a universe number, get Net/SubNet/Universe instantly. • Point Load — Distributed load calculator for 2–8 suspension points. Adjustable dynamic factor with per-point percentage breakdown and WLL checking. • Engineering — Simply-supported beam load simulator. Drag the load position and see both reaction forces update in real time. • Power — Voltage drop calculator with mm² and AWG cable sizing. Visual progress bar warns at 3% and flags at 5%. Calculates maximum safe cable run length. • Converter — Six conversion categories: length, weight, temperature, area, power, and pressure. Plus a watts/amps/kVA calculator. • Circle — Enter any one of diameter, radius, circumference, or area and get all the others. Supports metres, millimetres, centimetres, feet, and inches. • Colour — CCT and CRI reference guide covering 1800K to 10000K with typical source names and quality ratings. • CCT Meter — Live colour temperature measurement using your device camera. • Lux Meter — Live lux level measurement using your device camera. • DIP Switch — Visual DMX address calculator with tappable switches, channel stepping, quick presets, and binary display. Supports 9-bit and 10-bit modes. • Fixture Finder — Search 23+ manufacturer databases for fixture documentation, user manuals, and GDTF files. Direct links to manufacturer downloads. All calculations are provided as a guide only. Always verify critical values with a qualified engineer.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
Axios
NativeBase
BUILD KIT DIFFICULTY
Intermediate
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.
