Data Honesty
On a verified course, every number is real, traceable, and disclosed. “Measured” requires verified geometry, a pin you set, supported lies, and a real GPS position — all four. Anything less says “Estimated,” and when the app doesn’t know, it shows a dash.
The PinFlag iOS app is in pre-release. Leave your email and we’ll tell you the moment it’s available.
Most golf apps blend data sources into one confident-looking number. PinFlag discloses instead: “Measured” requires verified geometry AND a user-set pin AND supported lies AND a real GPS position — all four, or the number honestly reads “Estimated.” Dispersion comes from exactly one source at a time. When the app doesn’t know, it shows a dash.
Why it matters
- Most apps blend sources into one confident-looking number; you can’t audit what you can’t see.
- Decisions built on disclosed data survive contact with reality.
How it works
- 1
The Measured gate
Verified geometry AND a user-set pin AND supported lies AND real GPS — the conjunction is strict, and tested.
- 2
A visible grammar
Solid green means Measured; amber-dashed means Estimated with the reason; grey means Pending.
- 3
Honest absence
No wind model, no wind number. Unsupported lie, no strokes-gained value. A dash is an answer.
Everything Data Honesty does
- The strict Measured gate: four conditions, all required
- A visual grammar you can read at a glance — solid green Measured, amber-dashed Estimated, grey Pending
- Round badges that admit partiality: “Partially measured · N of 4”
- One dispersion source per number — launch monitor, on-course, or model — never an average
- Hand-placed balls and preview positions are always Estimated
- Implausible GPS fixes are refused, not scored
- No wind or elevation model yet — so those readouts are dashes, not guesses
Who it’s for
Anyone who has wondered which of an app’s numbers to actually trust — and coaches who need player data to be defensible.
What’s different
- Partiality is admitted on the badge: “Partially measured · N of 4,” with the why.
- One dispersion source per number, never an average of sources — structurally impossible and mutation-tested.
- Hand-placed balls and rehearsal positions can never read as Measured.
Frequently asked questions
- What makes a number “Measured” in PinFlag?
- Four conditions, all true: verified course geometry, a pin you set yourself, supported lies for the shot, and a real GPS position. Miss any one and the number honestly reads Estimated.
- Why not blend data sources for a smoother number?
- Because a blended number can’t be audited. PinFlag uses exactly one dispersion source at a time — launch monitor, on-course, or model — and labels which.
- Does PinFlag show wind or elevation adjustments?
- Not yet — no wind or elevation model ships today, so those readouts show a dash rather than an invented adjustment.
Be first on the tee
The PinFlag iOS app is in pre-release. Leave your email and we’ll tell you the moment it’s available.