Acarta is an architecture guide for iPhone with 3 main map categories: buildings, public art, and landscape. A place page explains who designed a site and what to look at, which gives me a reason to choose one street over another when planning a walk.
Start on the map and filter by architectural style or period, then open a building to read its description, save it, or record a visit. Creator profiles connect one place to other work by the same architect, while the walking routes add a sequence: a stop card tells you where to go next and gives context when you arrive, so you can follow a thread across several streets rather than repeatedly searching nearby.
The route is the part that interests me. Acarta's launch notes distinguish curated Stockholm walks from themed tours elsewhere, and describe a catalogue concentrated in Sweden. That makes coverage the first thing I'd check before planning around it. The existence of a city on the map doesn't promise the same depth as Stockholm, and a saved building is a better starting point than an assumed complete guide.
Acarta suits iPhoners who stop at unfamiliar facades. I'd start with a Stockholm route and save interesting buildings encountered along the way.
