# On-Course HUD > Canonical: https://pinflag.io/features/on-course-hud The PinFlag HUD is a one-thumb, portrait heads-up display over native Apple satellite imagery. It frames every hole the same way, reads your lie from real geometry — including a neighbouring hole’s fairway — and tells you plainly when it can’t vouch for the ground you’re on. *The PinFlag iOS app is in pre-release. Leave your email and we’ll tell you the moment it’s available.* Every hole opens perfectly framed on Apple satellite imagery. Aim by panning the map under a fixed reticle; read carry and leave live; set today’s pin on the real green; and log shots with one gesture. The HUD knows your lie — even on a neighbouring hole’s fairway — and says so honestly when the map can’t vouch for the ground you’re on. ## Why it matters - Distances alone don’t make decisions — position, lie, and pin context do. - A display you can run with one thumb, mid-round, without breaking pace of play. - Honesty when it matters: a dash instead of a confident wrong number. ## How it works 1. **Every hole, framed once** — A deterministic camera opens the hole tee-at-bottom, green-at-top, computed purely from verified tee and green geometry. 2. **Aim under the crosshair** — Pan the map; the reticle stays fixed. Carry to the aim and what it leaves to the pin update live. 3. **Set today’s pin** — Scroll the green under the crosshair and tap Done — pin placement is clamped to the real green polygon. 4. **Play with awareness** — GPS position, lie classification, penalty confirmation, and per-hole navigation ride along as you play. ## Everything On-Course HUD does - Set-once hole framing — tee at the bottom, green at the top, every time - Pan-to-aim with a fixed crosshair; taps never hijack the camera - Live carry and leave readouts; front/center/back green yardages from the real green ring - Set today’s pin — clamped to the real green polygon - GPS lie and position awareness, including cross-hole lie classification - Lie-support disclosure: no geometric basis, no number — a dash instead - User-confirmed penalty flow — water is never auto-penalised - Tournament mode: every advice-class aid off for the round, by design - One-tap 3D flyover of the hole, and straight back to your exact 2D aim - Honest environmental dashes — no invented wind or elevation numbers ## Who it’s for Players who want a real on-course instrument: tournament golfers (there’s a mode for that), fast players who log with one thumb, and anyone who has been burned by a confident number over ground the map didn’t actually know. ## What’s different - Tournament mode turns every advice-class aid off for the round — by design, not by omission. - Cross-hole lie classification: hit onto the neighbouring fairway and the HUD still knows. - No invented environment: with no wind or elevation model shipped, those readouts are dashes. - A camera that never fights you — taps never hijack the view. ## Frequently asked questions ### Is PinFlag legal in tournaments? PinFlag ships a Tournament mode that keeps distances on and turns advice-class aids off for the entire round. Always confirm the specific rules in force for your competition. ### Does PinFlag use Apple Maps? On iOS the on-course map is a native Apple MKMapView rendering satellite imagery — a real native map, not a web map in disguise. ### Does PinFlag have 3D course views? Yes — a one-tap 3D flyover of the hole, which returns you to your exact 2D aim when you exit. ### What happens when GPS is weak? You place the ball by hand and the position is honestly tagged “Adjusted.” Implausible fixes are refused outright rather than scored. ### Does the app add penalties automatically? No. Water and drops are user-confirmed — you drag to a playable drop and the penalty is logged as exactly one stroke.