Stack My Trails reads your workout routes from Apple Health and stacks them on a single map, creating a beautiful heatmap-like visualization of your training routes. See all your runs, walks, hikes, and cycling routes layered together. Discover your favorite paths, explore patterns in your training, and turn your routes into art. Pay once, own it forever. No subscriptions, no accounts, no cloud. Your data stays on your device. KEY FEATURES - Import workout routes from Apple Health with one tap - Browse all your trails in a scrollable list with preview maps - Stack up to 500 routes on a single map view - Filter by area, date range, and activity type (running, walking, cycling, hiking, swimming) - Create stunning poster images with 4 visual themes - Customize posters: intensity, color tint, labels, decorative frames - Frame and rotate your poster for the perfect composition - Save posters to your photo library or share them - Export and import your trail data as a backup file - Show your current location on the trail map to discover new routes and unvisited directions - Built-in GPS spoofing filter for accurate route display in affected areas - Full dark mode support - No account, no subscription, no cloud — works offline after initial import YOUR DATA, YOUR DEVICE Stack My Trails stores everything locally on your device. No accounts, no servers, no tracking. Your workout data is yours. The only network request the app makes is to Apple's geocoding service during import to convert route coordinates into place names (e.g., city and region). Once imported, everything works offline. POSTER THEMES - Noir: Dark background with glowing trails - Architect: Navy tones with cool blue paths - Minimalist: Clean light background with dark trails - Clean: Pure map view with subtle trail overlay REQUIREMENTS - iPhone with Apple Health workout route data - iOS 16.0 or later - Workouts must have GPS route data recorded (from Apple Watch or a GPS-enabled workout app) - Location access is optional — used only to show your position on the map when enabled in Settings