App Overview

Shooter: Ballistic Calculator icon

Shooter: Ballistic Calculator

Kennedy Development Group, LLC · Sports

Precision external ballistics for hunters, competitive shooters, and tactical professionals

$19.99 · In-app purchases

PRICE
$19.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
51 ratings · Top 15%

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 included17 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 Shooter: Ballistic Calculator: map the core Sports 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

Provide comprehensive in-app tutorials and FAQs.

Assumption to check: Limited user support and documentation

Validate with people who use this workflow before building.

Hypothesis 2

Implement advanced algorithms for better accuracy.

Assumption to check: Inaccurate calculations in some scenarios

Validate with people who use this workflow before building.

Hypothesis 3

Enable users to export calculations to CSV or PDF.

Assumption to check: No data export options

Validate with people who use this workflow before building.

Hypothesis 4

Simplify the UI and group settings logically.

Assumption to check: Cluttered interface with too many options

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

Precision external ballistics for hunters, competitive shooters, and tactical professionals. For over 15 years, Shooter has delivered fast, accurate trajectory solutions you can trust from the range to the field. Key Features: • Save Your Data — Store unlimited firearm and ammunition profiles. Enter your specs once, then calculate on the fly. • Bluetooth Weather Integration — Import live atmospherics from Kestrel 5000-series, Kestrel DROP, or WeatherFlow meters. • Weather from Station — Import atmospheric inputs from a nearby weather station. • Truing / Calibration — Determine your true muzzle velocity or automatically calibrate drag using observed field data for improved solution accuracy. • Advanced Corrections — Support for Coriolis effect, spin drift, and aerodynamic jump. • Zero Atmosphere — Shooter accounts for atmospheric differences between your zero conditions and current environment. • Target Cards — Get solutions for multiple targets at once, and save target cards for use across your firearm/ammo profiles. • Built-in Sensors — Use your device's camera, compass, and GPS to capture look angle, azimuth, and location. • Extensive Bullet Library — Pre-loaded ballistic data from major manufacturers to speed up profile setup. • Cloud Backup & Sync — Manage profiles from your PC at manage.shooterapp.net and sync to your device, no monthly cost. • Full Metric Support — Switch seamlessly between imperial and metric units. • Export & Share — Email formatted trajectory tables directly from the app.

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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
Zustand
Axios
React Navigation
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.