Purpose-built iPhone apps

Two focused apps.
One Bob On family.

Choose the tool you need — advanced external-ballistics calculation or a private, on-device shooting and handloading record.

Bob On Ballistics

External-ballistics calculations with projectile data, trajectory, turret corrections, spin drift, Coriolis and live environmental inputs.

Private records for pest control, range days and handloading — stored on your device, with PDF export when you choose.