Your run, replayed as a living miniature world.
Keep your phone tucked away while you move. YourLeft turns your outdoor runs, walks, and rides into a stylized 3D miniature world with real terrain, buildings, and tree canopies.
Running is about being present. Not staring at a screen.
Most modern fitness apps turn running into a feed of notifications, battery drain, and flat 2D lines drawn over generic map grids. Worse, they hoard your private routes and coordinates on corporate cloud servers.
YourLeft takes the opposite path. Put the phone in your pocket and run. When you come back, your route is synthesized into an atmospheric 3D miniature diorama — complete with hills, building outlines, and canopies.
Phone-Away Outdoor Recording
Android foreground service keeps recording through locked screens. No accidental pauses, no battery waste.
Living 3D Geodata
Real OpenStreetMap road networks, building footprints, and elevation terrain mesh into a bespoke miniature world.
True On-Device Privacy
Zero accounts. Zero cloud databases. Your GPS data never leaves your device unless you deliberately share a story.
Conventional Running Apps vs. YourLeft
- ✕ Flat, static 2D polylines on satellite maps
- ✕ Requires email, password, and public profile
- ✕ Coordinates harvested for advertising telemetry
- ✕ Cluttered social feeds and distraction loops
- ✓ Atmospheric 3D miniature world diorama
- ✓ Zero accounts; open immediately and run
- ✓ Stored locally in private SQLite/IndexedDB
- ✓ Automatic 200m start/end home privacy masking
Four steps from stride to story.
No complicated setups. No profile verifications. Just lace up and go.
Move Outdoors
Start a walk, run, or cycle. YourLeft utilizes high-accuracy GPS with an ongoing Android notification, continuing tracking reliably even with the screen off.
Synthesize the World
When you tap finish, the hybrid engine queries OpenStreetMap vector footprints and elevation contours, procedurally generating the 3D neighborhood you traversed.
Cinematic Replay
Relive your pace and elevation changes. Switch smoothly between third-person Follow, 360° Orbit, and bird's-eye Overview cameras at 1× to 8× playback speeds.
Share & Protect
Export transparent route PNG stickers, animated GIFs, or photo stories for Instagram and WhatsApp. YourLeft automatically obscures the first and last 200m to guard your home.
Engineered for runners, designed for clarity.
Explore the core architectural breakthroughs that set YourLeft apart.
Floating-Origin Precision with 60 FPS Replay
YourLeft solves the classic GPS rendering problem: double-precision latitude/longitude causes GPU jitter when transformed into standard 32-bit floats.
Our custom East-North-Up (ENU) floating origin recalculates coordinates locally around your route, delivering rock-solid camera smoothness and butter-smooth animation across long runs and marathons.
Launch the real WebGL world right in your browser with bundled demo terrain.
Try Web DemoReady to experience your run in 3D?
Download YourLeft for Android today and turn your everyday routes into living miniature worlds. Free, private, and requiring zero account setup.
Android 14+ supported · Apple iOS version in internal testing · No credit card required