Furmark is not available for Android but there are a few alternatives with similar functionality. The best Android alternative is AIDA64. It's not free, so if you're looking for a free alternative, you could try 3C Toolbox or PCMark. If that doesn't suit you, our users have ranked more than 10 alternatives to Furmark and four of them are available for Android so hopefully you can find a suitable replacement.
AIDA64 is a system information, diagnostics, and auditing application developed by FinalWire Ltd., that runs on Windows, Android, iOS, Windows Phone and Tizen operating systems. It displays detailed information on the components of a computer.
3DMark includes everything you need to benchmark your hardware in one app. Whether you're gaming on a smartphone, tablet, notebook, laptop, desktop, or a high-performance gaming PC, 3DMark includes a benchmark designed specifically for your type of device.