There's no way to be able to revert back to previous versions of the Home app. The version that is available in the Play Store is the only version that's possible to download. A lot of version updates improve functionality and security, so going backwards could put your device at risk. I would be interested in hearing what you don't like about the new app version, however. We do take feedback into account for future revisions. If you would like to share some specifics, I can make sure your words are seen by our teams.