Observed arrival · 2026-09-19
OfflineTopoMap: The map that works where signal doesn’t
An upcoming iPhone and iPad app for downloading OpenTopoMap terrain tiles before heading offline.
- For
- Hikers, ski tourers, and bikepackers planning offline routes
- Worth noticing
- Downloads are capped at 15,000 tiles, with a stated maximum of approximately 525 MB.
Field notes
The proposed workflow uses rectangular area selection, a live estimate, and a single download covering zoom levels 0–17. The page describes a 15,000-tile ceiling, roughly 525 MB maximum, resumable downloads, and shared storage for overlapping areas. Its map data comes from OpenTopoMap, which combines OpenStreetMap data with SRTM elevation under a Creative Commons Attribution-ShareAlike licence. The site identifies the app as an independent client rather than an OpenTopoMap or Apple project.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue