This app was mentioned in 3 comments, with an average of 1.00 upvote
Thanks!
One site where you can see it is on a Google Play store page.
https://play.google.com/store/apps/details?id=jp.co.yahoo.android.apps.navi
An easy to spot example would be the heading text for the app on the Google Play store. Could you check it in both Chrome and Brave?
Yahoo カーナビ for car navigation. Much, MUCH better routing than Google or Waze since it avoids narrow roads in favor of the arteries, plus it displays the cost of the toll roads and takes that in account when figuring the "best route"-- were those 3 minute savings worth ¥410? Lane guidance, speed trap locations, and live traffic as well.
Sadly no English support but very easy to use without it even if you don't read Japanese yet. Best of all, it's FREE! Android users with non-Japanese Play Stores will need to download the APK from an APK Manager program like this one.
I usually use Yahoo's navi. It seems a bit more customized for Japan driving. Only in Japanese though
https://play.google.com/store/apps/details?id=jp.co.yahoo.android.apps.navi