DOPE: Ballistics Calculator

DOPE (Data On Previous Engagements) turns your rifle, your optic, and your load into exact firing solutions — built for the range, usable with gloves on, readable in sunlight.

BALLISTICS CALCULATOR
• Full physics engine: G1/G7 drag models, wind drift, shot angle, density altitude
• Exact solutions at any distance — elevation and windage in inches, MOA, MRAD, and turret clicks for YOUR scope
• Range cards with come-ups and wind holds at your intervals
• Reticle view: see your exact hold on your actual reticle (Mil-Dot, EBR-2C, TReMoR3, BDC, and more) at your magnification
• Environmental corrections: temperature, pressure, humidity, altitude
• Point-blank range and transonic warnings

ZEROING AID (PRO)
• Photograph your target and let DOPE find your shots — or tap them in
• Works with printed targets AND hand-painted targets (tell it one known dimension)
• Get the exact turret correction: direction, clicks, and the residual after you dial
• Built-in troubleshooting assistant for tracking problems, off-paper shots, and rough zeros — works offline at the range

YOUR GEAR, MODELED RIGHT
• Catalogue of hundreds of rifles, pistols, and optics — or enter custom specs
• Loadouts pair a firearm, an optic, and a load; switch between them in one tap
• Type-ahead search across makes and models
• Truing: match the solver to your real observed come-ups (PRO)
• Shot log: record what you came up, where, and in what weather (PRO)

SHARE YOUR RESULTS
• One tap turns a zero session or range card into a clean shareable image

FREE vs PRO
The ballistics calculator, range cards, reticle view, and one loadout are free forever. DOPE Pro adds the Zeroing Aid with photo detection, Truing, Shot Log, and unlimited loadouts.

DOPE Pro is an auto-renewing subscription: $3.99/month or $24.99/year. Payment is charged to your Google account at confirmation of purchase. The subscription renews automatically unless cancelled in Google Play at least 24 hours before the end of the current period. Manage or cancel any time in Google Play → Subscriptions.

Terms of Use (EULA): https://dope-rho.vercel.app/terms
Privacy Policy: https://dope-rho.vercel.app/privacy
Support: https://dope-rho.vercel.app/support

Know your DOPE before the shot ever breaks.