Photograph a paper target and LogBook measures the group, reporting the size in inches and MOA, the mean radius, and the scope correction in clicks.

It tracks what your rifle actually does, every time you shoot it. LogBook keeps all of it in one place, and lets you compare one load against another instead of guessing.

Built by professional shooters who got tired of the same problem: dope books scattered across three range bags, a spreadsheet you stopped updating in March, and a camera roll full of target photos you can't tell apart.

Track as little or as much as you want. Round count and group size at one end. Temperature tables and cold bore shift at the other.

For iPhone. In development, not yet on the App Store.

Write to info@pennanti.com and you will hear when it reaches the App Store.