Use google maps downloaded free . Cold cold cold
I also tried Sygic today, but am disappointed with its performance. App was directing me to a wrong location although I input the correct post code on the search bar. It happened twice. Fortunately I was trying on a route which I was familiar with and hence I managed to reach the destination without a problem. I believe many of the users experienced similar problems based on the reviews on the Playstore. That put me off from purchasing the license. I like the lay out, similar to other Satnav like Tomtom or Garmin and there are lot of useful information and voice guidance. I agree with you on the prediction for the arrival time, it was completely off (Google map is the best in my opinion for predicting the time based on the real time/historic traffic).
Had a go with the free premium trial over the weekend to see if I thought it was worthwhile purchasing. I drive about 3000 miles a month and am a fan of Waze, very rarely had issues with lack of data connection (it has happens, more so when I try and recalculate a route whilst travelling tbh). As far as I know it caches your route when it's calculated. Pros; Offline maps with a nice UI although it seems to show POI's along the route all the time which I would prefer not to have, lane guidance worked well. Displays the speed limit and your speed and highlights on the map when the speed limit ahead is about to change - great feature. Seemed to use less battery power than Waze although that was my experience on one day, YMMV. Cons; ETA was not perfect, seems just to use average speed for roads rather than historical road speed data like Waze does. On a short journey on country roads (with 60mph limits) it underestimated the journey time by about 30%! On a longer journey along primary roads it was more accurate but still not as accurate as Waze. Speed cameras - on a section of the M4 where there have been roadworks and average speed cameras for several months there was no speed camera data yet it shows some that aren't there.Don't seem to be able to view a map overview of the route or recalculate on the fly. On balance i'm going to purchase as a backup
You can install it on devices with different accounts. Note... I believe active traffic only works on the last device it was installed on. To get it back to your original device you just 're register on that device again..
The traffic part would obviously need data to be of any proper use. Unless it uses historical traffic patterns which is better than nothing but no where near as good as live traffic.