18Birdies is a great golf app.
The free version offers scoring, shot tracking and statistics (plus a weather forecast).
For a fee, users get 3D greens maps, club recommendations, advanced stats and more.
It’s handy, on the course. But what about the courses themselves? How can golfers share photos? Insights into which bunkers are not in good shape, or where the wind whips off nearby water? Or get recommendations from friends, while traveling somewhere new?
That’s the territory — before and after rounds — that Linx has staked out.
The app is in a soft launch phase. It teed off right here, at courses like Longshore and Rolling Hills Country Club.
Linx is the brainchild of Daniel Rosenkranz. The Staples High School Class of 2021 member was not on the golf team — he swam, volunteered with the Westport YMCA special education swim program, and founded the Aerial Photography Club.
After studying philosophy, politics and economics at the University of Michigan, Rosenkranz landed a consulting job. But the starting date was a few months off. So he trained for a half-Ironman, and headed to Peru where he worked at a hostel, surfed, and improved his Spanish.
From left: Daniel Rosenkranz, father Jeff, brothers Eli and Jeremy.
As he began his consulting gig, Rosenkranz realized that he could use AI tools to build an app. Golf seemed a perfect target.
“Golfers like to share opinions,” he notes.
Nearly everyone else does too. Runners, cyclists and fitness enthusiasts have Strava. There are many ways to rate and talk about movies, music and restaurants.
“But there was no way to hear about how your friends were playing, except texting,” Rosenkranz says.
Linx fills that gap. From comments (“everyone plays at a super slow pace”) to recommendations (“my favorite course in South Florida!”), and with the ability to upload photos while on the course, or after, the app works exactly as he envisioned.
Linx users can find (left) and rate (right) golf courses.
Getting on the App Store is not easy. Apple’s strict requirements meant that Rosenkranz was constantly fixing one issue, then forced to work on another.
It was frustrating — but ultimately helpful. “They found serious stuff,” Rosenkranz says.
Since the rollout, marketing has been primarily through social media and word of mouth. Golfers pass Linx on to their foursomes, colleagues, college friends — anyone they know who spends time on the links.
The app is free. Rosenkranz is growing the user base, before transitioning to a revenue model. He hopes to charge courses for promotion, and/or allow users to book tee times through the app for a fee.
Every user has their own customizable page.
As for the founder: He has posted already about Longshore and Rolling Hills (his home course).
Plus The Bridge in the Hamptons, which he played this summer with UM friends.
He described that course’s ocean view. And added, “it’s in as good shape as advertised.”
Fore!
(Linx is available through the App Store — search for “Linx golf app.” Rosenkranz welcomes feedback from users; email danielrosenkranz7@gmail.com.)
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