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
Lightning Vault
Lightning Vault is a professional camera tool designed to capture lightning with precision and reliability.
$14.99
PRICE
$14.99
No 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.
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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 included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 Lightning Vault: 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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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 user feedback mechanisms to improve the app.
Assumption to check: Lack of user reviews and feedback on app functionality
Validate with people who use this workflow before building.
Hypothesis 2
Enhance encryption and security features.
Assumption to check: Potential security concerns with photo storage
Validate with people who use this workflow before building.
Hypothesis 3
Include non-destructive editing tools for user convenience.
Assumption to check: Limited editing features for photos once in the vault
Validate with people who use this workflow before building.
Hypothesis 4
Add cloud backup functionality for enhanced data safety.
Assumption to check: No cloud backup option for photos
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
Lightning Vault is a professional camera tool designed to capture lightning with precision and reliability. How it works: The camera continuously analyzes real-time brightness changes When a lightning flash is detected, the app instantly captures: •25 frames before the flash •10 frames after the flash Review the full burst and save the best frame to your Photos library All processing happens entirely on-device, in real timeLightning strikes are instantaneous and impossible to predict. Lightning Vault continuously buffers frames and automatically preserves the moments before and after a lightning flash - ensuring you never miss the decisive shot. Key features: •Intelligent real-time lightning detection •Pre- and post-flash frame buffering •High-performance capture at 1080p, 60 fps •Optimized for extreme brightness transitions Designed for real storm conditions Lightning Vault is built for photographers, storm chasers, and serious enthusiasts who demand speed, accuracy, and control. The app prioritizes lightning visibility over general scene brightness to ensure reliable detection and clean captures during storms. Best results are achieved during dusk, nighttime, and active storm conditions. No subscriptions, no ads, no accounts.
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
Advanced
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.
