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
MilFuel Calculator
Bingo Fuel is a fast, mission-focused fuel burn calculator built with Army aviators in mind.
$3.99
PRICE
$3.99
No 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 included14 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.
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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.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Bingo Fuel is a fast, mission-focused fuel burn calculator built with Army aviators in mind. Designed for quick fuel checks, live burn-rate estimates, and retime planning, Bingo Fuel helps aircrews turn fuel numbers into useful decision-making information without digging through scratch paper or mental math. Enter starting fuel, current fuel, and either use the live timer or manually input elapsed time to calculate your hourly burn rate, fuel burned, reserve estimates, and projected VFR/IFR fuel times. Whether you are checking fuel during training, tracking burn during a cross-country leg, or updating a mission retime, Bingo Fuel keeps the numbers simple, clean, and easy to read. Features include: Live fuel check timer using device time Manual elapsed-time calculation mode Hourly fuel burn rate calculator VFR 20-minute reserve estimate IFR 30-minute reserve estimate Live retime tracker based on calculated burn rate Local calculation history Delete individual or full history Multiple display themes, including dark, NVG-style green, and day ops white Works offline with calculations stored locally on device Built for the cockpit. Simple enough for the kneeboard. Fast enough for the mission. Bingo Fuel is intended as a planning and reference aid only. All calculations must be verified against approved aircraft publications, mission planning systems, unit SOPs, and current operational guidance. This app is not an official military product and does not replace required fuel planning procedures.
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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
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.
