MOA Scorer

Measure rifle group sizes from a photo.

Need help? Email moa.scorer@gmail.com and we'll get back to you. Please include your iPhone model, iOS version, and (if it helps) the target photo.

What it does

Shoot a group on a supported grid target, photograph it with your phone, enter your distance, and MOA Scorer reports each group's extreme spread in MOA and inches plus the windage and elevation to your point of aim. Everything runs on your device.

Supported targets

Action Target SI-13MPD "Rifle Sighting Target"
Thompson Target HALO 4643 "Scope Alignment"

Quick help

How do I measure? Capture or import a photo of the whole target, confirm the design, enter your shooting distance, and read the per-diamond results.
Why is the inch measurement the same at any distance? The printed grid is a fixed physical scale, so group size in inches is a real measurement on the paper; true MOA is then computed from the distance you enter.
The aim point looks off. On a heavily shot-up diamond the auto aim can drift. Tap the diamond, choose Move aim, and tap the true center — the numbers update instantly.
A shot was missed or mis-counted. Tap the diamond and use Add or Remove to correct the shots; group size recomputes live.
It couldn't read the target. Fill the frame with the target, keep it flat and evenly lit, and avoid heavy glare or shadow.