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
Lighter Pro
Wave your iPhone, iPad or iPod in style with this realistic and fully animated virtual lighter!
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.4
5 ratings · Below Average
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 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.
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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 Lighter Pro: map the core Entertainment workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Expand the variety of designs and add more customization features.
Assumption to check: Limited lighter designs and customization options.
Validate with people who use this workflow before building.
Hypothesis 2
Focus on improving user experience and fixing bugs.
Assumption to check: Poor app rating indicating user dissatisfaction.
Validate with people who use this workflow before building.
Hypothesis 3
Clarify pricing and offer a transparent value proposition for premium features.
Assumption to check: In-app purchases may confuse users.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate sharing options to enhance user engagement.
Assumption to check: Lack of social features to share lighters.
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
Wave your iPhone, iPad or iPod in style with this realistic and fully animated virtual lighter! Don't be left out at a gig or concert, raise your lighter and join in with the crowd. Flip the lid, strike the wheel and away you go - so simple and easy you'll be rockin' in no time! The smooth action and realistic sound effects will even have you playing with it like a real flip top lighter. FEATURES - * Customise your flame colour and background - includes over 200 country flags! * Authentic - the most realistic lighter and flame effect on the App Store * Fully animating and flickering flame effect (see video) * Light feature which can be toggled on/off * Simple and easy to use * Clutter free with no ads or popups * Clean and professional design * Real sound effects * Intuitive - natural touch gestures to open, close and light * Works on iPhones, iPads and iPods! * Windproof and never runs out of gas! Check out the video of the flame in action here - http://www.youtube.com/watch?feature=player_detailpage&v=6PLRmmQTG_U
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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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.
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BUILD KIT DIFFICULTY
Starter
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.
