# Course Preview > Canonical: https://pinflag.io/features/course-preview Preview a Course opens the same HUD you play with, in rehearsal mode. Place a ball anywhere, set a pin, study targets, and fly the hole in 3D — with every preview number honestly labeled an estimate. *The PinFlag iOS app is in pre-release. Leave your email and we’ll tell you the moment it’s available.* Preview a Course opens the same on-course HUD in rehearsal mode: place your ball anywhere, set a pin, explore targets, and fly the hole in 3D. Preview placements are badged “Set by you” and always read as estimates — rehearsal never masquerades as measurement. ## Why it matters - The first time you see a hole shouldn’t be the moment you have to hit it. - Rehearsal with the same display you’ll play with — not a different app with different numbers. ## How it works 1. **Pick a course** — Any playable course opens live-less: no GPS, no round, no pressure. 2. **Place and explore** — Drop your ball anywhere — it’s badged “Set by you” — set a pin, and read the hole. 3. **Fly it** — The same one-tap 3D flyover works in rehearsal. ## Everything Course Preview does - The real on-course HUD, live-less — zero GPS, zero scoring pressure - Manual ball placement anywhere on the hole, badged “Set by you” - 3D flyover from your ball toward the green - Honest provenance: preview numbers are always Estimated, never Measured ## Who it’s for Tournament players scouting a venue, travelers picking lines before a buddies trip, and anyone who plans. ## What’s different - It is the real HUD, not a separate viewer — what you rehearse is what you’ll see. - Placement honesty is structural: a hand-placed ball can never read as Measured. ## Frequently asked questions ### Is the preview 3D? Yes — the same 3D flyover the HUD offers in play works in preview, returning you to your exact 2D view on exit. ### Do preview numbers count as measured data? No. A manually placed ball is always an estimate and is badged “Set by you” — rehearsal never masquerades as measurement. ### Does previewing use my GPS or start a round? No. Preview is live-less by construction: no GPS, no round record, no scoring.