What tools do you use for testing mobile applications?

For testing mobile applications, I use the following tools:

• Appium — a cross-platform tool for automating mobile applications on iOS and Android.
• Espresso — a framework from Google for automating tests of Android applications.
• XCUITest — a tool for automating tests of iOS applications.
• Robotium — for automating Android applications.
• TestFlight — for beta testing iOS applications.
• Firebase Test Lab — a cloud platform for testing on real devices.

I also use emulators and simulators for quick testing, and for manual testing — real devices with different OS versions and characteristics.