A rifle ballistics calculator built to work where you actually shoot: no signal, no account, no waiting. Drop and windage for any range, your holdover drawn on your actual reticle, a range card you can print for the scope cap, and a lab that shows you what wind, zero and sight height really do to the bullet.
What it is
Point-mass trajectory with G1 and G7 drag, velocity-banded ballistic coefficients where the bullet maker publishes them, air density from real temperature, pressure and humidity, and Miller stability from your twist rate. Every result is cross-checked against an independent reference solver before release.
Reticles are drawn from the manufacturers’ own specification sheets and marked Verified once a person has checked every mark. The rest are included and in use, with verification in progress — and we say which is which, in the app and on the store page.
Free, forever
The solver, the reticle view with generic Mil-Dot and MOA reticles, the full bullet library plus your own custom bullets, two rifle profiles, truing from what you saw on target, and backup of your own data to a file. Offline. No account. No ads.
Harson Pro
The manufacturer reticle library — ZeroTech, Nightforce, Leupold, Vortex, Athlon, Burris, Bushnell, Primary Arms — unlimited rifle profiles, the Flight Path Lab’s what-if controls, and new verified reticles and bullets pushed to your phone as they’re checked. Your scope goes to the front of the verification queue.
A$29.99 a year with a 14-day free trial, or A$99 once for life. No monthly plan.
Support and privacy
Your rifles and loads never leave your phone. Privacy policy · Support · info@harsongroup.com.au
Harson Ballistics is a calculation aid, not a substitute for your own judgement, safe firearm handling, or confirming your zero on a range.
