Now on iPhone, iPad and Android
The ballistic calculator that goes to the range with you
Drop and wind holds for your load and the day's conditions, your saved loads and shooting logs, all on your phone. Free to install; Pro is a one-time purchase, not a subscription. No ads.
Used the web version? Sign in to the app with the same Google account and your saved loads, profiles and shooting logs come with you.



Holds in MIL or MOA
G1 and G7 drag models, with drop, wind drift, velocity, energy and time of flight at every distance.
Weather meters
Read the day’s conditions from a supported Bluetooth meter, such as a Kestrel 5700 with LiNK or a WEATHERmeter, or enter them yourself.
Works offline
Every calculation runs on the phone, so it works at the range without a signal.
Loads and shooting logs
Save loads and presets and keep shooting logs, synced across your devices when you sign in with Google or Apple.
DOPE range cards (Pro)
Range cards for the loads you shoot, with holds for every distance.
Truing and profile import (Pro)
True muzzle velocity and BC to the drops you measure, and import ballistic profiles from other solvers.
Web tools
The original Ballistics Insight toolkit, free in your browser.
Calculate detailed trajectory data for any load.
Record and review your range sessions and performance.
Track and manage your handload recipes and data.
Compare multiple saved profiles side-by-side.
Compare 2-10 bullets side-by-side with CDM curves and wind drift.
Manage your collection of rifles and firearms.
Visualize and compare G1, G7, and Custom Drag Functions.
Monte Carlo precision analysis with CEP and dispersion patterns.
Calculate maximum range where bullets remain supersonic with velocity curves.
Upload target photos for instant precision analysis.
Design and validate custom wildcat cartridges from parent cases.
Monte Carlo precision metrics, ES/SD impact, and sensitivity analysis.