The app calculates how many operations (add, subtract, multiply, divide, etc.) a CPU can perform in a given second with either fractional (floating-point) or integer numbers.

FLOPS - Floating-point Operations Per Second, performance measurement of Floating Point Unit (FPU).
INOPS - Integer Operations Per Second, measurement of Arithmetic Logic Unit (ALU)

E.g. 1 G(iga)FLOPS means that CPU can do 1 billion floating-point operations per second (such as 1.1+2.2=3.3).

General app logic is typically reliant on integer operations, while graphics and games rely on floating-point ones. The faster your CPU can crunch numbers, the faster your apps can run.

You can compare your device's performance to 1960s Apollo Guidance Computer or 1990s super computer. There's also a results database with comparison figures for more actual devices (smartphones, laptops).

Tests are executed in single and multithreaded modes and reflect multi-core and single-core performance.

Under Options you can change the number of threads used and choose between 32 and 64 bit precisions.

Stress Test is available and allows tracking CPU performance and temperature over time under high load (determining thermal throttling).

More info about how the app works: https://maxim-saplin.github.io/xOPS-Web/?about=

Source code: https://github.com/maxim-saplin/xOPS-App