Notch

Score any match card from a photo with on-device ML

Read the Story

My Phone Replaced a Brass Plug I wanted to cook venison from scratch, which meant learning to shoot, which meant keeping track of my progress, which meant porting a 2012 OpenCV paper and training a state-of-the-art computer vision model, which meant the dinner took a bit longer than expected. 185 59

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Snap your match card, get an auto-scored session

Pulling, stringing, fatigue — patterns you can't see in the numbers

Coaching that tells you what to fix, not just what went wrong

Every target from every range day, one tap away

Range day progress across rifles, ammo, and discipline

Live session tracking on the Lock Screen while you shoot

Photograph the target. Notch scores the card, spots the drift in your group, and tells you which fundamental to work on next — so the drive home isn't the first time you think about what just happened on the firing line. ¶

Core ML or Vision framework work? I consult on on-device ML integrations.

Common questions

What target types does Notch support?

NSRA .22 cards are the primary format. ISSF and air-rifle targets work too, with more disciplines added over time.

Does Notch need internet?

No. CoreML runs the scoring on-device. No photos leave your phone.

Can Notch tell me what I'm doing wrong?

It flags common group-shape patterns — a tight cluster low and right usually means trigger pull; a vertical string through centre is breathing through the shot. Cumulative heat maps show the patterns across sessions.

Can I compare across different rifles or range days?

Yes. Every scored card is saved with rifle and date. Trend analysis across sessions shows per-rifle performance and whether this week's groups are tighter than last week's.