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
Mil Fuel Check
Mil Fuel Check v 2.4 features -
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
21 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/
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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 Mil Fuel Check: 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
Allow users to customize aircraft types and fuel units.
Assumption to check: Limited user customization options
Validate with people who use this workflow before building.
Hypothesis 2
Implement local storage for entries when offline.
Assumption to check: No offline functionality
Validate with people who use this workflow before building.
Hypothesis 3
Add reminders for regular fuel logging.
Assumption to check: No reminder feature for fuel checks
Validate with people who use this workflow before building.
Hypothesis 4
Integrate charts for fuel consumption over time.
Assumption to check: Lack of data visualization
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
Mil Fuel Check v 2.4 features - (formerly Army Fuel Check) -Adjustable Reserve 1/2 times instead of VFR/IFR reserves (default to 20/30 minutes respectively) -Adjustable bingo fuel (defaults to 400 lbs) -Adjustable pop-up notification times (defaults to 15 minutes) -Switch between Green/Black UIs -Adjustable external tank fuel settings -Continuously running clock for extremely high levels of accuracy -Fuel calculations down to the pound with rounding options for users that want increased simplicity -Adjustable max fuel settings up to 999,999 lbs to accommodate all Army rotary wing air frames -Easy to use user interface Simply set your start fuel, tap start, and you are good to go! Want to know how much fuel you're burning at 15 Minutes? 17 minutes? 16:54? Simply dial in your check fuel whenever you are ready and hit check! Army FuelCheck provides you with to the second accuracy! Have bigger tanks? no problem! simply tap the Max Fuel / Settings button when the clock is not running and dial in your max fuel to fit any air frame up to 999,999 lbs! for questions / comments / feedback contact us at: [email protected]
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
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.
