Does Treader work offline?

Pro saves the trip map and a read-only copy of the plan on your phone, so the trip opens and the map draws with no signal. Editing and live features need a connection.

How much space does an offline map take?

It depends on the trip. The Offline map card on the Trip Hub shows the estimate before you save, and a trip is capped at about 2,000 tiles.

Plan a trip Part of Pro

Save a trip's map for offline

Pro stores the map around every stop and along the roads between them on your phone, with a read-only copy of the plan, so the trip still opens with no signal.

2 min read 3 sections 2 questions answered

The last stretch of road into a park, the valley floor, the metro platform: the plan is most useful exactly where the signal is not. On Pro, Treader saves the map for the whole trip into the browser on your phone, and keeps a copy of the plan beside it.

Save it

1 On the phone you will carry, open the trip, then the Trip Hub.
2 On Overview, find the Offline map card. It shows roughly how many map tiles and how many megabytes the trip needs.
3 Tap Save for offline and keep the tab open while it downloads. The card counts the tiles as they arrive.
4 Change the stops later and the card offers Update. Remove frees the space.

What gets saved

The standard map in detail around every stop, and the roads between stops on the same day at a coarser zoom.
Up to about 2,000 tiles a trip. A very long trip is saved stops first, then the roads as far as the limit reaches, and the card tells you when that happened.
A read-only copy of the plan, refreshed every time the plan saves, so the trip opens even when Treader cannot reach its servers.
Satellite and Terrain are not saved. They are not ours to store, so they are switched off while the device is offline.

Using it with no signal

Open treader.ca in the same browser you saved from. The trip opens read-only and the map draws. Edits wait until you are back online, so the copy on your phone never overwrites the live plan. On iPhone, add Treader to the Home Screen first so Safari keeps the files; a private window usually refuses to store them at all.

Tip

Save on wifi the night before, then open the trip once with the signal off to be sure. The offline map is the map; for a printed fallback see Save a guide to read later.

Common questions

Does Treader work offline?: Pro saves the trip map and a read-only copy of the plan on your phone, so the trip opens and the map draws with no signal. Editing and live features need a connection.
How much space does an offline map take?: It depends on the trip. The Offline map card on the Trip Hub shows the estimate before you save, and a trip is capped at about 2,000 tiles.