What's a grand Android app for getting about in a new city when my data's playing silly buggers?

Right, so, as a travel blogger, I'm constantly hopping around, and roaming charges? No, thank you! I found Voice GPS Navigation: GPS Map, and it's brilliant. You can download maps for offline use – I've downloaded maps for all of Southeast Asia, actually! It's saved me when I was wandering around markets in Bangkok. The voice navigation works a treat, even when you're in a place with dodgy signal. Plus, it doesn't eat up your roaming data, which is always a bonus. It works perfectly in rural Vietnam, where getting a signal is like finding a unicorn. Honestly, it's a proper useful app for any traveller who wants to explore without racking up a massive phone bill or getting completely lost. It's been a lifesaver on countless occasions!