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Yes, that's the whole point - combining transportation methods. Taxicabs, trains and bike sharing are all available via different apps and APIs. Whim aims to work as type of an aggregator who offers them all in the same app.

Aggregating is one thing; Google Maps also aggregates ride-sharing and public transport, but can't route using both at once.

You should try Citymapper!

Thanks, I will.

EDIT: Tried the web UI, doesn't seem to do that; it shows the separate PT/Cycling/Taxi routes, but none actually integrated. Plus the taxi route went over the river! (there was a car ferry once, but not for years)

The app definitely does (it can even do combos with public transport and uber), but the quality of the map might depend on the city. It is great for the Paris/Barcelona area at least

I've seen it do combined subway/Uber routes in Moscow.

Google Maps and the official HSL (Helsinki public transit) app seem to offer what you're looking for.