Drift vs BD

Drift is a precision ballistics calculator built for long-range shooters who want their software to match the quality of their gear. SET UP IN UNDER A MINUTE Search 1,300+ bullets and 600+ factory loads across priority calibers. Pick your rifle, pick your ammo, and Drift auto-populates ballistic coefficients, muzzle velocity, and bullet weight. Handloaders get a first-class path: select a bullet, enter your chrono'd MV, done. Manual entry is always available as a fallback. SOLVER YOU CAN VERIFY RK4 point-mass solver with G1 and G7 drag models. Spin drift, Coriolis, and aerodynamic jump corrections. Validated within ±0.1 mil at 1,000 yards against JBM & AB — a claim you can test yourself. Sub-10ms solve time. BUILT FOR THE RANGE — Hero holds at a glance: elevation and windage in large, readable type — Range cards with smart interval presets and transonic zone indicator — Wind compass with clock-face direction input and speed strip — Atmospheric auto-populate from phone sensors and WeatherKit — Screen stay-awake so your range card doesn't disappear mid-string — Distance input via stepper, keyboard, or preset capsules YOUR DATA, YOUR DEVICE Offline-first. No account required. No server dependency. Profiles are stored locally with iCloud backup. Built to match the trust standard of the physical data book. GEAR IDENTITY Your Arsenal shows composited rifle silhouettes built from your actual setup — platform, stock, barrel length, optic, mount. Not clip art. Your rifle. Drift is built by a product designer and shooter in Florida. No account walls, no subscription bait, no tactical cheese. Just a ballistics tool that respects your time and your data.

App Name: BD-Engine Subtitle: Wireless Ballistic Calculator Description: BD-Engine is a professional ballistic calculator that connects wirelessly to the BD-Engine hardware module via Bluetooth Low Energy, delivering real-time, high-precision trajectory computation. Built for precision shooters, BD-Engine provides fast and accurate firing solutions with the power of a dedicated solver and the simplicity of a mobile app. Key Features: Instant Wireless Pairing — Connect to the BD-Engine module over BLE in seconds. Auto-reconnect remembers your last device. 3DOF Ballistic Solver — Advanced three-degree-of-freedom trajectory computation for accuracy at any range. G1 & G7 Drag Models — Supports both industry-standard drag functions for precise bullet matching across all common calibers. Full Environment Setup — Temperature, pressure, humidity, altitude, wind speed and direction, shooting angle, and muzzle cant — all at your fingertips. Real-Time Trajectory Table — View drop, windage, velocity, and time-of-flight at every range increment. Verify your zero with a dedicated check distance. Custom Bullet Profiles — Configure caliber, weight, ballistic coefficient, and twist rate for your exact load. Dual Unit System — Toggle between metric and imperial units on the fly. Standalone Operation — Once configured, the hardware module computes trajectories independently — no phone required for firing solutions. BD-Engine combines dedicated ballistic hardware with an intuitive iPhone interface for shooters who demand precision. Note: Requires a device equipped with the BD-Engine BLE hardware module (sold separately).