App Overview

ZephyrAir: Wind & Ballistics icon

ZephyrAir: Wind & Ballistics

Wayne Reynolds · Weather

ZEPHYRAIR — WIN THE WIND

$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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A product spec, screen plans, and build steps for your coding agent.

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What's included18 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.

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.

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

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for ZephyrAir: Wind & Ballistics: 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

Integrate multiple APIs for more accurate and diverse weather data.

Assumption to check: Limited weather data sources compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to customize alerts and save favorite locations.

Assumption to check: Lack of user personalization features

Validate with people who use this workflow before building.

Hypothesis 3

Provide tutorials and guides on using ballistic data effectively.

Assumption to check: Insufficient educational content on ballistics

Validate with people who use this workflow before building.

Hypothesis 4

Implement social sharing options for wind and ballistic data.

Assumption to check: No community features for sharing data

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

ZEPHYRAIR — WIN THE WIND Matches aren't lost on the bench. They're lost in the wind. ZephyrAir turns your live conditions into the exact hold for the next target — so you call it, dial it, and break a clean first-round hit. From either your Apple Watch, iPhone, or both at the same time! Built for PRS and NRL shooters who live and die by the wind call. CALL THE WIND, NOT THE LUCK - Stream live wind straight from your Bluetooth meter — Calypso, Kestrel, WeatherDot, and SG Pulse. - Per-target wind brackets show your hold from lull to gust, so you know your miss window before the wind even shifts. - Crosswind, headwind, spin drift, and aerodynamic jump — solved in real time, every sample. **A SOLVER THAT KEEPS UP** - Dual engines: a fast Pejsa solver and a full point-mass trajectory model. - G1, G7, and true custom Doppler drag curves (CDM) for honest trans-sonic tracking past 1,000 yards. - Coriolis + Eötvös, angle/cosine holds for steep stages, and density altitude from the onboard barometer. - Auto-MV from temperature and BC truing — tune the solver to YOUR data, not the box claims. STAGE DATA, HANDLED - Match timer with par alerts, wrist haptics, and pick-your-voice callouts: Standard, Australian, Western, or Drill Instructor voices. - The DOPE Log auto-captures every shot with the conditions behind it — review and re-true after the match. - Direction-of-Fire compass and moving-target lead for the stages that try to beat you. ON YOUR WRIST - A full Apple Watch app — live wind and firing solution at a glance, standalone or relayed from your phone, running the exact same ballistic engine. CARRY YOUR CARD - Generate a DOPE card — your come-ups, on your stock. No battery, no backlight, no glare. MAKE IT YOURS - Classic, Tactical, and Futuristic themes, each with day and night modes for the line or the low light. Stop guessing. Read it, hold it, hit it. *ZephyrAir is a tool for target and competition shooting. Always follow safe firearm handling and the rules of your range and match. **For use with non-AB Calypso Wind Meters.

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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
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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.