The Number

Request an invite

The Number is invite-only for now. It knows two courses in Philadelphia: Bala Golf Club, and the St. Martins nine at Philadelphia Cricket Club as a preview. Karl reads every request himself and sends invites a few at a time.

Get it on the App Store

You can download the app now, but you need an invite to sign in. Request one below.

  • You'll need an iPhone with iOS 18 or newer. On Android? Ask anyway: Android requests are counted.
  • Already have the app? Keep it. When we have a spot for you, we'll email you at the address below, and the email says how to sign in.
  • Questions first? See the FAQ.

Your name is missing. Please fill in the form again with your name.

That email address didn't look right. Please check it and send the form again.

One answer was too long. The course, your name and how you heard fit in 80 characters each, the note in 500.

Lots of requests today. Please try again tomorrow.

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Something went wrong on our side. Please try again in a few minutes.

The app knows Bala and St. Martins hole by hole. Name the course you'd take it to; every answer counts as a vote.

Use the address you'll sign in with. Your invite and your sign-in codes come here.

Your phone

The Number runs on iPhone and iPad. Android requests are counted, not turned away.

We use this only to send you an invite and to see which courses and phones people ask for. See the privacy policy.