Some suggestions I have are:

- clearer voice synthesis (slower), multiple warnings.
- when you arrive at destination state on screen and vocally "Arived at destination," not geological coordinates.
- if < 1 km state in meters.
- ability to download route TO and route BACK on one click.
- if accidently leave route, give warning and when you arrive back on track continue vocal directions. Seems it stops vocal directions if you go off track, or cut into an old route.

Other than a few missing things this is an otherwise great application. Thank you for your hard work and effort.