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
Field Investigator Pro
Field Investigator Pro is the ultimate mobile investigation tool designed for professionals and enthusiasts alike
$3.99 · In-app purchases
PRICE
$3.99
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
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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 Field Investigator Pro: map the core Productivity 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 a robust project management feature with clear visual indicators.
Assumption to check: Difficulty in managing multiple projects effectively.
Validate with people who use this workflow before building.
Hypothesis 2
Provide advanced reporting options with customizable templates.
Assumption to check: Limited reporting functionalities.
Validate with people who use this workflow before building.
Hypothesis 3
Add priority levels and due date alerts for better task management.
Assumption to check: Poor task prioritization features.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate team collaboration features such as task assignments and comments.
Assumption to check: Lack of user collaboration tools.
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
Field Investigator Pro is the ultimate mobile investigation tool designed for professionals and enthusiasts alike. Whether you're a private detective, paranormal researcher, computer forensics expert, corporate investigator, journalist, or field researcher, this app helps you stay organized and document everything that matters. CORE FEATURES: Case Management - Create and organize multiple open cases - Add detailed descriptions, dates, and statuses to each investigation - Track progress from initial intake to final report - Categorize cases by type, priority, or client Clue Documentation - Add clues and evidence items to any case - Attach photos, notes, and observations - Timestamp every entry automatically - Tag clues for quick filtering and cross-referencing Photo Evidence - Take photos directly within the app - Attach existing photos from your gallery - GPS tagging for location-based evidence - Timestamped image logs for chain of custody Field Logs & Notes - Write detailed investigation logs - Rich text notes with formatting options - Voice-to-text support for hands-free logging - Offline access — works without internet connection Security & Privacy - All data stored locally on your device - Optional biometric lock for sensitive cases - Encrypted storage for confidential information Ideal for: - Private Investigators & Detectives - Paranormal & Supernatural Researchers - Computer Forensics Specialists - Corporate & Internal Investigators - Journalists & Documentary Researchers - Insurance Adjusters & Claims Investigators - Field Scientists & Academic Researchers Start your next investigation with confidence. Field Investigator Pro keeps your cases organized, your evidence documented, and your findings secure — right at your fingertips.
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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
@react-navigation/native
@supabase/supabase-js
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.
