What's the best app for dodging overdraft fees when you're backpacking and your bank account's playing silly buggers?

Right, so when I'm off gallivanting around, say, Southeast Asia, the last thing I need is some ridiculous overdraft fee from my bank back in Dublin. Dave works a treat for this. It basically keeps an eye on your account and gives you a heads-up if you're about to go into the red. And the best bit? It can spot you a bit of cash to cover the difference! It's saved me a few times when I've been waiting for funds to clear or just plain miscalculated my spending money for the week. It's grand because it means I don't have to stress about those pesky fees eating into my travel budget. Plus, setting it up was dead easy, even on dodgy Wi-Fi in a hostel in Hanoi. Honestly, for a travelling nomad like me, it's an absolute essential.