Spotter Ready
Full-featured ballistic calculator with speech support.
Spotter Ready launched on April 8, 2026.
What it does
A field-ready ballistics calculator for Android. Spotter Ready computes firing solutions and trajectory tables for precision rifle shooting. It combines a physics-based point-mass ballistics solver with live weather integration, offline voice commands, and a suite of standalone ballistics tools. All your data is yours. You manage your own backups. Nothing is uploaded to us. There is no tracking or advertising.
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- ARA real-time ballistic solver for moving targets under drag (C++)Jan 2026 · ▲5
Hi HN, I’m sharing a small open-source project I’ve been working on: a native C++ ballistic solver that computes launch angles to intercept moving targets in real time, under gravity and air drag. Instead of relying on vacuum assumptions, closed-form equations, or lookup tables, the solver formulates the intercept as a nonlinear problem and solves it numerically using time integration and iterative methods. The motivation came from game and simulation scenarios where simpler approaches tend to break down: - moving targets - strongly curved trajectories due to drag - real-time constraints The…
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