About & Licenses
Your data
GPS activity records are stored on your device using IndexedDB on the web and the app's private SQLite database on Android. Selected photos remain in memory while you compose a story. Saved activity history is not sent to a YourLeft server. Public map requests include the approximate viewport needed to load nearby geography and may expose ordinary network metadata such as an IP address to map providers.
When you export or share a story, the output file stays on your device until you choose where to send it. YourLeft does not gain rights to your photos.
Map data
© OpenStreetMap contributors, ODbL 1.0. Building footprints, road centerlines, water, park and terrain features are derived from OpenStreetMap. Live neighborhood data is queried from public Overpass API endpoints.
The bundled demo fixture is a bounded extract containing real building and road geometry. Heights use mapped values where available; missing heights are bounded estimates based on building type. Procedural windows, trees and roof detail are decorative approximations.
Animated athlete
The bundled character model uses Quaternius CC0 Universal Base Characters and Universal Animation Library assets. Idle, walking, jogging and sprinting are generic authored clips, not a personal avatar. See public/models/NOTICE.md for full attribution.
Third-party libraries
- polygon-clipping (MIT) — building part geometry
- gifenc (MIT) — GIF sticker encoding. License at
public/licenses/gifenc.txt - MapLibre GL JS (BSD-3-Clause) — map rendering
- Three.js (MIT) — 3D world rendering
Delete your data
All saved activities, unfinished recordings, offline maps and preferences are stored locally. You can delete them from Activity settings → Saved activities in the run screen, or clear your browser's site data for this app.