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
Iowa Police Field Reference
Iowa Police Field Reference is an application for police officers, deputies, attorneys, criminal justice students, and other law enforcement professionals in the state of Iowa
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
610 ratings · Top 5%
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 included18 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 Iowa Police Field Reference: map the core Reference 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 search filters and sorting options.
Assumption to check: Limited search functionality that doesn't support advanced filtering.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to share notes and create a community section.
Assumption to check: Lack of user-generated content or notes sharing.
Validate with people who use this workflow before building.
Hypothesis 3
Improve accessibility features, such as voice commands and larger text.
Assumption to check: Inaccessible design for visually impaired users.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a notification system for users regarding updates.
Assumption to check: Inconsistent updates for law changes or code revisions.
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
Iowa Police Field Reference is an application for police officers, deputies, attorneys, criminal justice students, and other law enforcement professionals in the state of Iowa. It features a browseable, searchable database of the entire Iowa Criminal Code, Iowa Traffic Law, and other selected chapters that are useful in the daily duties of a law enforcement officer as well as a variety of additional reference material. Users can mark commonly referenced statutes as "favorites" for even faster access. Features include: No internet access required Complete Iowa Criminal Code Chapter 321 - Iowa Traffic Law Fine Compendium Speeding Citation Calculator Court Date Finder Driver's License Classes/Endorsements/Restrictions. Dark interface for use night or day. Flexible search system to rapidly find the appropriate statute for any situation. APCO 10 Codes (Radio Ten Codes) Miranda Warning Phonetic Alphabet Apple's standard Terms of Use apply to this app: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
React Navigation
React Native Paper
AsyncStorage
React Query
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.
