This is version 3.5.9 of the M-Pesa app—the last release before the MyOneApp update. Installing it is not as simple as downloading a standard APK. You will need to either download it from the APKMirror website or use the direct link provided below.

After downloading the app in APKM format, you'll need to install the APKMirror Installer from the Play Store to complete the installation process.

During installation, you may encounter some warnings—they must be ignored. You should also expect a few ads within the APKMirror app before the installation begins.