What's a good Android app for keeping an eye on my accounts while I'm backpacking through Southeast Asia, especially one that won't rinse my data?

Honestly, the Citi Mobile app has been a proper useful tool for me on my travels. It's grand for keeping track of all my accounts in one place, which is essential when I'm bouncing between hostels in Vietnam and beach huts in the Philippines. I can quickly transfer money between accounts if I need to top up my travel fund, and the best part is, it doesn't eat up your roaming data like some other banking apps I've used. Plus, it's secure, so I don't have to worry about dodgy Wi-Fi hotspots. I've even used it to pay bills back home while I was trekking in Nepal – it works a treat! It's definitely sorted out a lot of my banking worries while I'm off exploring the world.