Granum
Shot pattern analysis for shotgun, rifle, and pistol shooters. Photograph your targets, log your equipment and conditions, and let Granum do the analysis.
What it does
Pattern Analysis
Photograph your target and get graphical overlays - spread circles, grids, and heat maps showing exactly where your shots landed.
Ballistic Calculations
Built-in ballistic models with PCHIP interpolation give you meaningful numbers beyond raw point counts - useful for load development and choke selection.
Weather Integration
Automatic weather fetch at session start. Temperature, humidity, wind, and atmospheric pressure are logged alongside your results so conditions are never forgotten.
Equipment Tracking
Log firearm, choke, load, and distance per session. Compare results across different equipment combinations over time.
Local-First Data
All your data lives on your device in a local SQLite database. No account required, no cloud sync, no subscription. Backup and restore whenever you want.
Multi-Discipline
Works for shotgun pattern testing, rifle group analysis, and pistol target scoring. Configurable for different target sizes and distances.
Built with
Privacy
Granum is designed with privacy as a default. Your shot data, photos, and session history never leave your device. No user accounts, no ads, no analytics beyond crash reporting via Sentry.
Read the full privacy policy →