Zero Considerations is a fast, private, fully-offline firearm zeroing and ballistics tool for the range. No account, no login, no ads, no tracking — everything stays on your phone.
DIAL IN YOUR ZERO
• Photograph your target and let the app measure your group, then get exact click adjustments to move point-of-impact to point-of-aim.
• "Zero-and-true" loop: from a photographed group at a known distance, back out your true muzzle velocity so your dope matches reality.
• Lay a cartridge (or a printed target with corner markers) in the photo as a scale reference — the app reads pixels-to-inches automatically, with a manual fallback that always works.
BALLISTICS THAT MATCH YOUR RIFLE
• Full trajectory solver with drop, wind, and energy in MOA, MIL, or clicks.
• Auto-fill environment (temperature, pressure, humidity, wind) from your phone's sensors and location, or enter it by hand.
• Wind dial you drag to your call; optional compass capture.
• Point-blank-range and maximum-ordinate tools.
KNOW YOUR OPTIC
• Hundreds of scopes and red dots with faithful, to-scale reticle renderings — see your actual holdovers before you shoot.
• Suggested zero distance per reticle, load-aware.
• Mount + riser calculator that computes true height-over-bore from your rail and mount, including offset optics.
BUILD YOUR RIGS
• Save firearms, optics, mounts, loads, and lasers as reusable setups.
• Device loadouts: primary optic, offset, laser, and irons on one rifle, each with its own zero.
• Large built-in catalog of firearms, cartridges, factory loads, and optics — or add your own.
PRIVATE BY DESIGN
• Works with no internet connection. Your firearms, loads, photos, and results never leave your device.
• The only optional network request is weather auto-fill (sends approximate location to a weather service, nothing stored).
• No ads. No analytics. No account.
For education and lawful sporting use. Always verify your zero and dope on paper before relying on them.
Offline firearm zeroing & ballistics: reticles, holdovers, photo zero. No login