What's a good Android app for quickly paying my Amex bill and checking my rewards balance, like, super fast?

Honestly, the Amex app is one of the few finance apps I actually *like* using. From a technical standpoint, the API integration is smooth – basically means it talks to their servers really well. I can pay my bill in like, two taps. No more spaghetti code situations here, the dev team really thought about the user flow. And checking my rewards? Bam, right there. It loads in about 2-3 seconds on my Pixel 7, and it barely uses 50MB of RAM. They've also got some decent security under the hood, which is always a plus when you're dealing with your bank details. It's not flashy, but it's rock solid and gets the job done without any fuss. Reminds me of a well-optimized game – efficient and effective.