Waze: reports over polish
Waze's identity is crowd-sourced reporting. Drivers flag police, hazards, crashes and slowdowns, and those reports shape your route in near real time. In a city with as much traffic churn as Dubai, that can be genuinely useful.
The trade-off is a busier interface and a reliance on other users actually reporting. On quiet roads at quiet hours, its advantage shrinks. It is a strong second app rather than a universal first.