What's a good Android app for crunching numbers and building spreadsheets on the go, especially if I'm already knee-deep in the Microsoft ecosystem?

Okay, so Excel on Android? It's actually pretty decent. I mean, it's Excel, so you know what you're getting into. But from a technical standpoint, the mobile optimization is surprisingly good. I'm talking about being able to actually use VLOOKUP without wanting to throw your phone across the room. The API integration with OneDrive is smooth – basically means it talks to other Microsoft apps really well, so you can access your spreadsheets from anywhere. I've been using it to track my crypto portfolio on the fly, and it barely uses 50MB of RAM. Plus, the collaboration features are top-notch. No more spaghetti code situations when multiple people are editing the same sheet. The dev team really thought about making this a functional mobile experience, not just a scaled-down version of the desktop app.