1° tells the truth
Most golfers think they pulled the putt. They actually struck it offline by a degree or two and never knew. There's no feedback at impact — the ball just rolls a little wobbly, drifts off line, and lips out.
thePuttGPT changes that. Strike a ball through it square, and you get pure end-over-end roll. Open or closed by even one degree, and you see visible spin or wobble immediately. The ball tells you the truth on every stroke.
By rep 50, your hands have learned to deliver the face square repeatedly. By practice session 3, three-footers stop lipping out.