Comparison
PinFlag vs. 18Birdies: GPS App vs. Live Strokes Gained
18Birdies is a broad, social GPS and scorecard app with a large course directory; PinFlag centers on the live strokes-gained cost of the target you’re considering, priced from your own shot dispersion, plus a live coach platform for developing a roster.
PinFlag is best for
Golfers who want the strokes-gained cost of a specific target priced live, from their own measured dispersion, on the hole they’re actually playing — and coaches who want one platform to develop a whole roster, not just log a score.
18Birdies is best for
Golfers who want one broad, casual companion for a round — GPS distances, a digital scorecard, social leaderboards, and a large course directory — without needing strokes-gained rigor or roster tools.
| PinFlag | 18Birdies | |
|---|---|---|
| Core job | Prices the strokes-gained cost of the target you’re aiming at, live | On-course GPS, digital scorecard, and a social companion for a round |
| Course coverage | Verified courses prioritized over broad coverage | 18Birdies’s site describes an extensive course directory |
| Measurement grammar | Every reading labeled Measured, Estimated, or Pending | Not addressed in 18Birdies’s public marketing |
| Built for a coach managing a roster | Yes — command center, lessons, assignments, reports | Not a focus — built around an individual golfer’s own round |
| Availability | Coach platform live today; live-SG iOS app in pre-release | A publicly available app today |
What’s the main difference between PinFlag and 18Birdies?
18Birdies is a broad, social golf companion built around GPS distances, scoring, and a large course directory. PinFlag is narrower and deeper: it prices the strokes-gained cost of the specific target you’re considering, live, from your own measured shot dispersion.
Most rounds, most golfers want one thing from an app: get around the course, know the yardage, keep score, maybe compare with friends. That’s the job 18Birdies is built for, and its course directory and social features reflect it. PinFlag is built for a narrower, deeper question: given exactly where you’re standing and how you actually hit the club in your hand, what does this specific target cost or gain in strokes? That number comes from strokes gained, Mark Broadie’s framework for pricing every shot against a benchmark, computed live on the hole you’re playing rather than summarized after the round.
Availability
PinFlag’s live, on-course strokes-gained readout ships with its iOS app, which is currently in pre-release. PinFlag’s coach platform — rosters, lessons, assignments, and reports — is live today on the web.
Do you need to choose one or the other?
Not really. A lot of golfers already carry a general on-course companion for scoring and social features; PinFlag adds strokes-gained rigor, and for coaches a roster-wide platform, on top of that rather than replacing it.
If you already use 18Birdies to keep score and find courses, there’s no real conflict in also wanting real strokes-gained numbers — they’re answering different questions. The honest distinction is depth versus breadth: 18Birdies covers a very wide range of courses and casual use cases; PinFlag goes deep on one thing, pricing your actual decisions in strokes. You can see the same underlying math applied to a single round for free with PinFlag’s strokes gained calculator, no account required.
Which should a coach choose?
A broad scorecard app doesn’t give a coach a roster view. PinFlag’s command center does — every player’s strokes gained, lesson logs, assignable practice, and reports, in one place, live today.
18Birdies is built around one golfer’s round. A coach managing a team needs the opposite: every player’s strokes gained in one command center, a way to see who needs attention this week, and reports that mean something to a parent or a program. That part of PinFlag — rosters, lessons, assignments, and progress reports — is live on the web today; see PinFlag for coaches for the full picture. The in-round live strokes-gained app for iOS is in pre-release.
Frequently asked questions
Does PinFlag have a course directory like 18Birdies?
Can I use PinFlag if I already use 18Birdies?
Is PinFlag’s live strokes-gained app available now?
Sources
Keep reading
Strokes Gained
Strokes Gained Explained: The Complete Guide
Strokes gained measures every shot against a benchmark of expected scores, revealing exactly where you gain or lose strokes versus a chosen standard — instead of guessing from fairways, greens, and putts.
For Coaches
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The best golf stats system for a coach is the one that gives every player strokes gained, manages a whole roster in one place, needs no hardware to scale, and turns the data into reports and assignable practice you can act on.
Comparison
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Comparison
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Comparison
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