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
Fire Guard for Shelters (F-02)
Need to pass the certificate of fitness exam for the F-02 Fire Guard at the Fire Department of New York City? This is the ONLY practice test App specifically designed to help you do that
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.4
16 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/
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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 Fire Guard for Shelters (F-02): map the core Education 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 course offerings with more interactive content and expert interviews.
Assumption to check: Limited course variety and depth
Validate with people who use this workflow before building.
Hypothesis 2
Focus on enhancing the user experience with clear navigation and engaging visuals.
Assumption to check: Average user ratings indicate usability issues
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the monetization model and clarify free versus paid features.
Assumption to check: In-app purchases may be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Implement comprehensive offline access for all courses and quizzes.
Assumption to check: No offline access for all content
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
Need to pass the certificate of fitness exam for the F-02 Fire Guard at the Fire Department of New York City? This is the ONLY practice test App specifically designed to help you do that. Our instructors have helped thousands of clients prepare for and pass the F-02 exam. We have created a bank of 100 questions that are similar in design and difficulty to the ones you will encounter when you take the actual test at the FDNY. Just like the FDNY exam, this app will randomly generate 20multiple choice questions each time you take the practice test and will allow you 30 minutes to complete the test. You can take it as many times as you like. Questions are categorized just like the ones at the FDNY -Portable Fire Extinguishers -Shelter Case Studies -Fire Watch Patrols -Alarm Initiating Devices -Responsibilities of Fire Guards in Shelters The app has a link to the official FDNY study material for the F-02 exam and it will also keep a record of your test history so you can go back and see what you got right and what you got wrong.
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
axios
react-navigation
zustand
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.
