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
Ghost Detector Radar™
*******We offer no guarantees of spirit presence, or frequency - results from this application should be used for entertainment purposes only*******
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
5 ratings · Top 30%
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 included16 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 Ghost Detector Radar™: 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
Implement advanced algorithms for better detection.
Assumption to check: Limited detection accuracy leading to false positives.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the UI and prioritize essential features.
Assumption to check: Cluttered interface with overwhelming options.
Validate with people who use this workflow before building.
Hypothesis 3
Introduce social sharing and community-driven content.
Assumption to check: Lack of engaging content or community features.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize performance and reduce resource consumption.
Assumption to check: Inconsistent performance on older devices.
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
*******We offer no guarantees of spirit presence, or frequency - results from this application should be used for entertainment purposes only******* Ghost Detector Radar™ scans, unmasks, and broadcasts paranormal activity in your immediate area. Electromagnetic spirit energy is clearly displayed on your retina screen device in real time. Ghost Detector Radar™ also includes a paranormal activity microphone that let’s you hear what the spirits are saying (so make sure you turn up the volume!!). Warning this app is not for the faint of heart!! We are not responsible if you drop your iOS device so hold on to it tight. This app is designed and intended for the most skeptical, prestigious, and technically savvy ghost hunters. Ghost Detector Radar™ techniques have confirmed countless high levels of paranormal activity. Aim your iOS device in the area you want to study, and make sure it is away from electrical appliances (this may cause disruptions in the readouts). Look at the 3 radar graphs for apparition locations. Spirits may be closer than you thought so keep an eye out. Ghost Detector Radar™ utilizes several state of the art paranormal algorithms to help locate spirits quickly. Traditional paranormal equipment can be easily fooled when normal bursts of energy occur. Ghost Detector Radar sets itself apart by analyzing the readings, and giving indications only when certain thresholds of electromagnetic energy are crossed. Instructions: Point your iOS device to the ground (or directly in front of you). Watch each of the three Radar monitors for apparition location. You can control the radar direction by swiping your fingers (left, right, up, down, and or pinching gesture). Adjust the distance of ghosts by tilting the device in any 4 directions. WARNING!! Most Spirits are friendly, however some can become volatile, and nasty!! Please utilize utmost discretion, and turn off the device if you happen to encounter a nefarious spirit! Also please be careful not to upset the spirits too much. One can typically discern a good spirit by the consonant tones, voices, and or blue color pattern as it is gorgeously displayed on your iOS retina display. Discern an Evil spirit by the dissonant tones, voices, and or red color pattern as it is gorgeously displayed on your iOS retina display. We are not responsible if you disturb the wrong spirit, and or if they decide to out stay their welcome. It has been known to happen! Consider this dismaying observation - it seems the spirits are most active from 12AM till 6AM, while 3AM seems to be the most active haunting hour. We dare you to scan after midnight!! Be Afraid be very afraid foolish mortals!!!!
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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.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
react-navigation
expo-animated
react-native-paper
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.
