[MetalHeadCrab]

I scanned his APK file with VirusTotal. Virus scanner AhnLab-V3 says the file is infected with PUP/Android.Malct.1190475. PUP means Potentially Unwanted Program. Not necessarily a virus or malware but could have undesired behaviour on your device like ads or hijacking your home launcher, restricting access to files & apps in attempts to sell you a "solution" app.

That's too bad, I'd love to have a more eink friendly Kindle app. I use the official Android play store version. It works ok on my Meebook M7.