Now on the App Store · iOS
Your dog's
trail journal.
Track walks. Save favourite trails. Remember every adventure with your dog.
Now on the App Store · iOS
Track walks. Save favourite trails. Remember every adventure with your dog.
Live GPS route, distance, duration, and pace — with auto-snapshot of the weather and a real-time step count from Apple Health and Core Motion. The map remembers where you went.
Promote any walk to a named trail. Walk it again later — with any of your dogs. Stats like fastest pace and total visits are computed across every walk on the trail.
Notes, photos, and weather attached to every walk. A "Walk Replay" scrubs your route back with photo markers along the way. The memory matters more than the metric.
Track walks for every dog in your household. Trails are shared across the pack. Stats stay per-dog. Switch the active dog with a tap, or pack-walk both with one button.
"Hey Siri, start a walk with Crosby" — leash in hand, no tap needed. Siri Shortcuts recognise each of your dogs by name and launch straight into the pre-walk map.
A live walking activity on the lock screen and Dynamic Island shows time, distance, and live steps as you walk. A Home Screen widget glances today's walks, streak, and weekly goal.
CrosbyTrails is built privacy-first on pure Apple frameworks. Your routes, photos, and notes stay on your iPhone, full stop. No accounts. No analytics. No third-party SDKs.
Free forever.
Yes. GPS route recording, photo capture, notes, trail saving, and step counting all work fully offline. The only thing that needs network is the one-time weather lookup at the end of a walk — and the walk saves fine without it.
Yes. Add as many dogs as you want, each with their own profile. Walks are recorded per-dog, but trails are shared so all dogs benefit from your saved routes. Pack walks (multiple dogs at once) are a one-tap option.
Locally, on your iPhone, in Apple's SwiftData framework. Nothing is uploaded to any server we control — because we don't run any servers. Apple's WeatherKit is the only external service the app calls, and only for a single end-of-walk forecast lookup.
Not yet. iCloud sync is on the roadmap as an opt-in feature for a future release. For now, walks live on the device they were recorded on.
During a walk, the app reads from your iPhone's motion coprocessor (Core Motion) to show steps in real time on the lock screen and stats bar. After the walk ends, the final count is read from Apple Health for full accuracy. Both are read-only — CrosbyTrails never writes to Health.
No. The whole experience runs on your iPhone — including step counting, GPS, weather, and the lock-screen Live Activity.
It opens CrosbyTrails directly into the pre-walk map for the active dog. You can also say "start a walk with Crosby" or "with Maple" to target a specific dog by name.
Free. There are no subscriptions, no in-app purchases in the v1 release, and no ads. The app is funded by the founder's other work, not by your data.
CrosbyTrails was built for Crosby, a Nova Scotia Duck Tolling Retriever from Cape Breton — and for every dog whose owner walks the same trails over and over and wants to remember them all.
It's not trying to compete with fitness trackers. It's trying to be the thing you reach for when you want to look back at the walks you took together.