Meet Stampr — Your National Parks. Stamped

Travel

Stampr

Your National Parks. Stamped.

Every feature, from the first launch.

No account, no login, no cloud. Everything runs on your device and works fully offline — nothing in this post is hidden behind a wall.

What Stampr does

Stampr is the digital passport for the 63 US National Parks — and the 325M visitors who pass through them each year.

Log a visit in three taps. Watch a beautifully-rendered stamp press into your passport with a satisfying haptic. Watch your progress against the "All 63 National Parks" challenge climb. See your years of trips laid out on a map, on a calendar, on a printable passport book.

Stampr is built like a keepsake, not a checklist:

— Tap-to-stamp: log a visit in under 30 seconds with date, photos, and optional notes. A grayscale outline transforms into a full-color cancellation stamp with a deeply satisfying animation. — All 63 National Parks: bundled offline. No network needed to browse, read, or log. — Auto-detected visits: iOS's CLVisit framework spots when you've actually been at a park. Get a gentle "Did you visit Yellowstone?" prompt afterwards. Always opt-in. — Map of the country: visited parks render in color; unvisited stay grayscale; want-to-visit get a heart pin. — Stats dashboard: progress ring, calendar heatmap, states-visited map, longest streak, region badges. — PDF export: print your full passport as a coffee-table book. One page per park with stamp, photos, and notes. — Privacy by default: no account, no email, no analytics SDK, no third-party tracker, no server. Photos are referenced from Apple Photos by identifier — never duplicated. Optional iCloud sync via your private CloudKit container; we never see your data. — Free, forever: every feature is included. No subscription, no ads, no IAPs.

Stampr is for the family on a road trip, the retiree checking off Acadia, the pursuer running all 63, the parent stamping for kids working toward Junior Ranger. It's the digital companion to the physical Passport book that's been in NPS visitor centers since 1986 — modernized and made beautiful.

A look inside

Tap any screenshot to open the full-resolution version.

What's inside

Passport grid — Vertical scrolling grid of all 63 National Park stamps. Visited render full color; unvisited render as grayscale silhouettes. Header shows progress ring (X / 63), total visits, suggested next-closest park. Toggle: All 63 / By Region.
Stamping animation — Triggered on every visit log. A grayscale outline transforms into full color as a 'stamp pad' presses down with a heavy UIImpactFeedbackGenerator haptic. The cancellation date appears with an ink-spread effect. ~1.5 sec, dismissible.
Visit logging — 3-step modal: When (date, pre-filled if geofence-detected) → Photos (PhotosPicker, stored as PHAsset identifiers) → Notes (optional). Submit triggers the stamp animation.
Map view — MKMapView with custom annotations for visited / unvisited / want-to-visit. Filter chips. Cluster annotations when zoomed out. Tap annotation → preview card → park detail.
Park detail — Biome-themed hero gradient, designation, states, established date, info card (hours, fees, dogs allowed, Junior Ranger), visit history if any, big 'Log a Visit' CTA, 'Want To Visit' toggle, 'Directions in Apple Maps' link.
Discover — Categorized browse — Nearby (within 300mi), All 63 NPs, By Region (7 NPS regions), By Biome, Junior Ranger Eligible, Dog Friendly.

Why we built it

The physical NPS Passport book has been the canonical tool since 1986 (~250k sold/year) but has no digital companion that handles photos, geofencing, stats, or print-on-demand reproduction. NPS Official app is purely a guidebook and explicitly avoids passport collection. Chimani is a $39.99/yr subscription guidebook,…

What makes it different

Stampr is the only iOS app that combines: (1) bundled offline 63-park dataset, (2) animated stamping moment with haptic, (3) automatic CLVisit-based detection, (4) beautiful procedurally-rendered original stamps per park, (5) full free experience with no subscription, ads, or IAPs. Competitors: NPS Official (no passpo…

Who it's for

Built for anyone who values fast, private, on-device software with a calm, focused UX.

In one line: Your National Parks. Stamped.

Try it

See the Stampr app page for the full feature list, the info table, and support links.

Or go straight to the App Store listing.

Use Stampr, found a bug, or have a feature request? Comments are open below — anonymous is fine.