Screen timeout

Hi all, first post here.

Just received a Z10 at work, previously had the 9900. Its very nice, but one complaint so far...
(I searched on this already, found one answer which was a little old....)

If I want to use Blackberry Maps, for example, in the car, I cannot get the screen to stay on when I plug in the charger. Not much use in that is there?

Back in the 9900 days I purchased Leave-it-on , which worked for this issue , but I cannot find anything like this for the Z10.. which seems amazingly odd.

Any workarounds, apps you may know of appearing recently?

Thanks.