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
FireGuard for Assembly F03/F04
Our instructors have helped thousands of clients prepare for and pass the F-03/F-04 exam
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.7
3 ratings · Top 50%
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/
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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 FireGuard for Assembly F03/F04: 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
Incorporate more gamified elements like quizzes and rewards.
Assumption to check: Limited interactive content can lead to user disengagement.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more visual progress tracking system.
Assumption to check: Difficulty in tracking user progress effectively.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer explanations of subscription benefits.
Assumption to check: In-app purchases can be confusing and may deter users.
Validate with people who use this workflow before building.
Hypothesis 4
Offer detailed explanations for correct/incorrect answers.
Assumption to check: Limited feedback on quiz answers can lead to confusion.
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
Our instructors have helped thousands of clients prepare for and pass the F-03/F-04 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 Fire Department of New York. Just like the FDNY certificate of fitness exam, this app will randomly generate 25 multiple choice questions each time you take the practice test and will allow you 38 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 -General Duties for Place of Assembly Personnel -Active Shooter Emergency Procedures -Portable Fire Extinguishers -Signage and Fire Protection Systems -Emergency Procedures and Notification -Special Requirements and duties for F-03 C of F The Fire Guard app has a link to the official FDNY study material for the F-03/F-04 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.
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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.
