CPU Load Generator for Android

Quick overview

Salt’s CPU Load Generator is a no-cost utility for stressing an Android device’s processor. It launches multiple background Android Services that continuously perform computation so you can evaluate CPU behavior under sustained load. The interface is simple and the app is compact, but it can push a device into high temperatures and cause instability if used carelessly.

How the stress is produced

The app creates workload by starting several Android Services, each repeatedly computing a SHA-1 hash over a 2 MB buffer filled with random data. The hashing loop runs indefinitely until you stop the Service, keeping the CPU continuously busy. You can enable or disable individual Services, and the tool supports running up to 16 concurrent workers to increase total load.

Notable features

• Low storage footprint and a straightforward interface suitable for many devices
• Free to download and use without in-app restrictions
• Configurable number of parallel Services (enable/disable as needed)
• Predictable, sustained load generation that avoids sudden, erratic spikes

Important safety notes

• Can cause device lag, temporary freezes, or UI unresponsiveness while Services are active
• Prolonged use will raise CPU temperature; unattended runs risk permanent hardware damage
• Avoid running stress tests while the device is charging or if ventilation is poor
• Monitor device temperature and stop Services promptly if the system becomes unstable

Suggested alternative

If you want another option to try, consider the 8-Core CPU Booster (free). It offers a different interface and may suit users looking for an alternative workload generator.

Conclusion

In practice, the CPU Load Generator performs as advertised: it provides fine-grained control over how much CPU pressure to apply and produces a steady, reproducible load. Use it when you need to benchmark or diagnose thermal and performance limits, but always proceed with caution and supervise tests to prevent overheating or hardware damage.