Zima Ballistics
The world's most advanced ballistic solver.
160+ features. Four solver models. Nine drag models. Independently verified against JBM Ballistics with a 96-test physics suite. Built for precision hunters, competitive shooters, and armed professionals.
Free to start. Pro unlocks everything — $19.99 once, no subscription.
Every tool a precision shooter needs.
Organized into four capability sets, each deeper than most standalone apps.
Ballistic Engine
3DOF, 4DOF, 6DOF, and Pejsa solver models with nine drag functions including custom JBM CSV and Lapua Doppler curves. Spin drift, Coriolis, aerodynamic jump, Magnus effect, gyroscopic stability, cant correction, transonic detection — every physics factor in the literature.
- G1/G7/G2/G5/G8/RA4/GS/GL drag models
- Multi-step ballistic coefficients
- Zero atmosphere BC correction
- Temperature sensitivity per load
- Subsonic/transonic detection
Field Ready
Built to work where you shoot — offline topo maps with range and bearing HUD, device barometer, camera inclinometer, GPS auto-fill, and Bluetooth integration with Kestrel weather meters, rangefinders, and chronographs.
- Offline topo maps — no signal required
- Kestrel Bluetooth integration
- WeatherKit historical auto-fill
- Camera inclinometer, device barometer
- Profile QR code sharing
Competitive Shooting
A full competition toolkit: stage planner with target cards and PAR timer, match score tracker with CSV export, come-up card printing for scope caps and arm boards, load comparison with overlay charts, and rapid multi-target engagement solver.
- Stage planner + PAR timer
- Match score tracker (CSV export)
- Come-up cards for scope cap / arm board
- Load comparison overlay charts
- Multi-target rapid engagement solver
Data & Output
Export-ready from day one. PDF range cards, CSV and XLS exports, DA Form 5517 military range cards, DOPE book with cold bore and barrel life tracking, ammo inventory, suppressor profiles, and iCloud sync across all devices.
- PDF range cards, CSV/XLS export
- DA Form 5517 military range cards
- DOPE book, cold bore tracking
- Ammo inventory + suppressor profiles
- iCloud sync, Apple Watch, widgets
Gated tools for active-duty and support roles.
A dedicated professional capability set — verified credentials unlock features purpose-built for active combat, LE, and fire support roles. Not hidden behind a paywall — restricted to those who need them.
- TAK/ATAK integration — CoT and GeoChat over tactical networks
- MGRS coordinate conversion — full grid reference support
- DA Form 5517 — US Army standard range cards
- Anti-materiel reference data
- Barrier penetration modeling
- Encrypted CoT storage
- Night-vision HUD mode
Professional access verified on request. Contact us with your agency or unit information.
Request Access →More rigorously tested than most commercial solvers.
Independently verified against JBM Ballistics reference data — the gold standard in ballistic computation. A 96-test physics validation suite covering all 4 solver models, 8 drag functions, and 6 correction factors.
Found a bug? Fixed within 48 hours. Want a feature? Submit it — we build what the community asks for.
400+ reticles. Verified subtension data.
The in-app reticle simulator overlays accurate holdover lines using verified MIL/MOA subtension data. We're building manufacturer-verified coverage across every major optics brand — see the current status.
View reticle coverage →Built for the field, not the spreadsheet.
Everything you need to get started.
- Full ballistic calculator + trajectory tables
- G1/G7 drag models with atmospheric corrections
- Up to 3 rifle profiles with load data
- Point blank range & basic tools
- Quick Solve mode for field calculations
Every feature. No subscription. Ever.
- All four solver models (3DOF, 4DOF, 6DOF, Pejsa)
- 5,600+ bullet and cartridge database
- WEZ hit probability analysis (Monte Carlo)
- Kestrel, rangefinder, chronograph Bluetooth
- TAK/ATAK tactical integration
- PDF range cards, DA Form 5517
- Apple Watch, widgets, Live Activities
- Reticle simulator + DIY reticle creator
- 100+ additional tools