In Topo Maps+ you can download maps to your Apple Watch. Pre-downloading maps to your watch helps preserve battery life since map images don’t need to transfer between your iPhone and the watch while you are hiking and makes the Apple Watch app more responsive. Topo Maps+ running on the Apple Watch will fetch maps from the iPhone, so you don’t need to download all maps to the watch.
To download maps to the watch go to downloads on your iPhone.
Then toggle on the option to download to your watch. This option will only show up if Topo Maps+ is installed your Apple Watch and your iPhone is able to communicate with your Apple Watch.
Now tap on the regions you want to download to your Apple Watch.
