Spotter Ready Ballistics is an overall app developed by Patrick Heim.
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App Information
Spotter Ready Ballistics is FREE to download. The APK download size is 108.09 MB. The latest version available is 1.0.1. The last update was on May 1, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play May 2026.
Description
Features:
Firing Solution - elevation and windage corrections for a dialled-in target distance, with optional click counts and text-to-speech readout. Includes: moving target lead, cant, Coriolis, wind, reticle view, etc.
Trajectory Table - Full range table with configurable columns including four independent wind hold columns. A “Reticle Card” indicates impacts in the scope reticle at various ranges and wind conditions. Both can be easily shared / exported.
Voice Commands - On-device models for continuous speech recognition; set distance, wind, and angle hands-free. Talk to the calculator when hunting and it talks back to you.
Live Weather - one-tap GPS fetch of temperature, pressure, humidity, and altitude from Open-Meteo; or connect a Kestrel or Tempest (Weatherflow) weather meter.
Live Cant and Shot Angle - Supports the use of a MantisX device to obtain cant and shot angle. Continuously adjust the firing solution based on sensor input.
Coriolis & Eotvos Correction - Optional correction for Earth's rotation and Etovos effect, meaningful at 800+ yards; point the rear camera at the target to capture bearing, elevation, and latitude with one tap
Cant Correction - Manual cant input or tap Measure to read cant directly from the phone's accelerometer held against the scope
Stale Environment Warning - the Home screen shows "Updated X ago" for live weather, colored amber past 30 minutes and red past 60
Shot Log - The ability to log shots for future analysis.
Chronograph Integration - Bluetooth integration with Athlon chronographs to import shot data. File import support for Garmin chronographs.
Bullet Library - Built-in database of projectiles plus the ability to add user-defined custom entries.
Reloader Mode - Optional mode that adds handloading fields (powder, charge, primer, OAL, case brand) to the load form; powder selection uses a built-in database of powders (adapted from Hodgdon) and case brand selection.
Backup & Restore - full open JSON database format export/import of all user data
Temperature-Adjusted Muzzle Velocity - profiles store an optional reference temperature and a velocity change per degree (fps/°F).
Trajectory Graphs - plot drop, windage, velocity, or energy against distance; overlay 2–4 comparison curves varying altitude, muzzle velocity, wind speed, temperature, zero range, or profile selection on a single graph.
Tools - Numerous standalone calculators (BC from velocity, BC from time of flight, point blank range, maximum distance, sunrise/sunset, group size, weather meter, trajectory truing, gyroscopic stability, target card, velocity sensitivity to temperature, reticle ranging, bullet database explorer, trajectory graphs)
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.