Unplan

Bookmark places you're interested in, without the need to schedule in detail. When you're in town, plan on the fly by seeing what's near. Arrange bookmarked places into lists.
Unplan enables you to create lists of interested places for your destination, then helps you to be a little more serendipitous when you're there, by simply showing your prior travel ideas and allowing you pick where to go next with directions. Don't miss that really awesome place you wanted to visit – but don't feel tied down to a schedule.
Easily navigate between your place bookmarks, you can set a "from" and a "to" point, and directions via third party apps.
Unplan is also useful in everyday life – bookmark your appointment destinations so all the places are at the tips of your fingers when you need directions. While the goal of Unplan is to enable a bit of serendipity with your travel choices – you can still plan things in detail by setting a date & time – and optionally synchronise with your iCloud calendars.
Many features of Unplan continue to work offline! You can view all your bookmarks, view them on the map (if the map tiles are cached from a previous view when you had internet) and get straight-line distance readings.
Unplan is free to use, with no restrictions on the number of places you can bookmark. Creating more than 1 list requires a once-off purchase of Unplan PRO from within the app.