How the caddie works

It reasons from how you actually play.

Every shot you log becomes data. Every round, it learns. By round five, OnTheBag knows your bag better than you do.

Download free
01

Log the shot

One tap captures club, distance and lie as you play. Simple. Fast. Mid-round.

02

Pre-fetch the next club

Your yardages, today's wind, the likely lie — combined before you arrive at your ball.

03

Get smarter

A personal shot history grows every round. By round five, it knows your bag.

Built on your real game

What generic AI sees

A golfer with a 7-iron, 142 yards away, no wind. Recommends a 7-iron.

What OnTheBag sees

YOUR 7-iron flies 142 yards. You're 5-for-7 with this club at this distance. You're inconsistent in the wind. Recommends 6-iron, softer swing.

How fast does it learn?

Round 1-4
Generic mode

General golf knowledge layered on your distance. More accurate than most caddies, less personal than it could be.

Round 5-9
Data mode

Enough similar shots to spot patterns. Recommendations start reflecting YOUR tendencies, not the average golfer's.

Round 10+
Full personalization

Deep knowledge of your game. Knows your weak clubs, your strong distances, what you do in the wind.

Your data stays yours

OnTheBag never sells your data. The AI runs on your shot history, never shared. You own every shot you log.

✓ Encrypted at rest

Your game history is encrypted on our servers.

✓ Secure in transit

Data syncs over HTTPS. Always.

✓ GDPR compliant

You can request, export, or delete your data anytime.

✓ No ads, ever

We make money from Pro subscriptions, not data.

The fairway is wider than you think.

Start logging shots and improving your game. Forever free.

Download OnTheBag