How to backup on Kindle - Helium not available

[datashade]

So, I've seen this link: www.tresebrothers.com/transfer-saved-games-between-devices/

but the listed app, Helium, doesn't exist in the Amazon AppStore, and I'm wondering if anyone has one they know works. I'm on a Kindle Fire HD6 if that matters.

[Cory Trese]

You can use this tool

apps.evozi.com/apk-downloader/

To get an APK off of Google Play. That's how I put Helium on my Kindles.

I'm looking around for another solution now.