Ballista: Ballistic Calculator

Ballista turns your rifle, scope and load into DOPE you can trust, on your iPhone and on a card taped to your stock. Made for hunters, competitors and duty shooters. Works offline.

RANGE IN, DOPE OUT
• Elevation and wind in MOA or MIL, in your turret's clicks: UP 6.75 is 27 clicks
• Big numbers you can read in full sun, in red at night and with gloves on
• A wind clock with a bracket around your wind call, plus shot angle and density altitude
• Air from your iPhone's barometer, or tap Get Weather
• Velocity, energy and time of flight at the target, and where the bullet goes transonic

DOPE CARDS THAT STAY RIGHT
• Print a card that matches the screen click for click, from a scope-cap strip to a full page
• Stage cards with your targets in order and three wind columns; Shoot it puts the whole stage on screen in big type
• A column for each place you shoot, and elevation at five temperatures
• Ballista tells you when the air no longer matches your card

ON YOUR RETICLE
• Which mark for which yard on 200+ scope reticles drawn from makers' published specs
• Or hold on a MIL or MOA grid with the ring on your target

KNOW WHY YOU MISSED
• True velocity or BC from shots at up to three distances
• After a miss, Ballista ranks the inputs most likely to blame
• Tap the answer to see every input behind it

ALWAYS AT HAND
• Your DOPE on the Lock Screen and in the Dynamic Island, with range buttons
• A 3D trajectory you can turn with a finger
• 500+ factory loads and 400+ bullets with makers' published BC and velocity
• Your rifles in iCloud and in an open backup file, or import them from another ballistic app's backup

Ballista's solver (G1/G7, stepped BC, spin drift, aerodynamic jump, Coriolis, out to 2,500 yd) is checked against an independent open-source solver and makers' published tables. Solutions are estimates: confirm zero, velocity and conditions with live fire. For lawful hunting and sport shooting.

Ballista never saves your location. Get Weather sends it to Apple Weather rounded to about 7 miles, only when you tap.

Not affiliated with any ammunition or optics maker. Product names are trademarks of their owners.