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
Minimums - Aviation Weather
Minimums turns raw METARs and TAF forecasts into clear, plain-English weather briefings — and tells you whether conditions meet your personal minimums before you fly.
$9.99 · In-app purchases
PRICE
$9.99
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.
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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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Minimums - Aviation Weather: map the core Weather 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 a more robust API for global weather data
Assumption to check: Limited location coverage and accuracy
Validate with people who use this workflow before building.
Hypothesis 2
Adopt a more minimalistic design approach with clear navigation
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Add offline access to previously viewed weather data
Assumption to check: No offline capabilities
Validate with people who use this workflow before building.
Hypothesis 4
Implement push notifications for real-time updates on weather changes
Assumption to check: Inconsistent update frequency
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
Minimums turns raw METARs and TAF forecasts into clear, plain-English weather briefings — and tells you whether conditions meet your personal minimums before you fly. Minimums decodes live METAR reports and TAF forecasts into easy-to-read cards showing wind, visibility, ceiling, temperature, altimeter, density altitude, and weather phenomena — all at a glance. SET YOUR PERSONAL MINIMUMS Define your ceiling, visibility, wind, gust, and crosswind limits. Minimums instantly checks conditions at any airport and gives you a clear Go or No-Go assessment with a violations table showing exactly what exceeds your limits. GUIDED SETUP FOR EVERY PILOT Not sure where to start? Answer four simple questions — certificate level, instrument rating, flight hours, and crosswind comfort — and get minimums tailored to your experience. Fine-tune every value before applying. TAF FORECASTS DECODED See the next 24–30 hours as timeline cards, color-coded by flight category. FROM, GRADUAL, BRIEF, and PROBABILITY change types are translated into plain English. Tap to expand alternate scenarios. LIVE CONUS MAP Every reporting station color-coded by flight category — green for VFR, blue for MVFR, red for IFR, magenta for LIFR. Filter by category or your personal minimums to see only airports that meet your limits. CROSSWIND CALCULATOR Minimums knows every runway at every airport. It automatically calculates crosswind and headwind components for the best available runway and checks against your personal limit. NEARBY AIRPORTS & FAVORITES See weather at the five closest airports instantly. Save favorites for quick access with live flight category badges and freshness indicators on the home screen. REAL-TIME FRESHNESS TRACKING A live countdown bar shows how old the current METAR is and when the next report is expected. Overdue reports are flagged immediately. YOUR PILOT LOGBOOK Track every airport you visit, your daily streak, and unlock 16 achievements — from First Flight to Storm Chaser, Cross Country, and Veteran. MORE FEATURES · Full plain-English METAR & TAF decoding with syntax-highlighted raw display · Wind compass, ceiling diagram, and runway visibility bar visualizations · Density altitude calculation with high-DA warnings · Share any METAR as an image · UTC/Zulu or local time display · Light and dark mode · Auto-refresh every 5 minutes · No account required — just open and search Minimums is for informational and educational purposes only. Not a substitute for official weather briefings, NOTAMs, or FAA-approved flight planning tools. Always obtain a proper briefing from 1800wxbrief.com before any flight. Privacy Policy: https://flyminimums.app/privacy.html Terms of Use: https://flyminimums.app/terms.html
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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
React Native
Expo
Redux
axios
react-navigation
react-native-maps
BUILD KIT DIFFICULTY
Intermediate
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.
