*** If you need old versions, please download from http://salt.car.coocan.jp/CpuLoadGenerator.htm ***
This tool launches several Android Services that continue to calculate SHA1 value of 2MB buffer that is filled by random data. You can control how many Android Services are launched by pushing button. Basically I think that CPU load is highest when you launch number of services as same as the number of the CPU Core.
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It seems this tool is too hevy. According to user feedback, several devices were broken. So please use this app carefully. But this tool is using just MessageDigest#update() and MessageDigest#digest().
https://developer.android.com/reference/java/security/MessageDigest#update(byte[])
https://developer.android.com/reference/java/security/MessageDigest#digest()
So if the device is broken, it is device's problem because device must ensure that all Android APIs work properly. And I think you can ask manufacture for repair.
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Latest Version
1.0.4Uploaded by
Joyce Xie
Requires Android
Android 6.0+
Category
Free Tools AppContent Rating
Everyone
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Flag as inappropriateLast updated on Aug 30, 2026
Ver.1.0.4
- Support Android API 36
Ver.1.0.3
- Support Android API 35
Ver.1.0.2
- Support Android API 34
Ver.1.0.1
- Add feature to start services automatically on boot