Yes, there are several Android app widgets that display Bitcoin stats, including block height, difficulty, and other key metrics. Some widgets even let you customize the information that is displayed so you can tailor it to your specific needs.

One popular Android widget for Bitcoin stats is called "Bitcoin Ticker Widget". This app allows you to view real-time Bitcoin price information, as well as other data such as market depth and trading volume. It also includes configurable alerts for price changes and other events, so you can stay up to date on the latest developments.

There are several other Android apps that offer similar functionality, so I would recommend doing some research to find one that best suits your needs. However, I believe that the Bitcoin Ticker Widget is a good place to start, as it is widely used and highly rated by users in the cryptocurrency community.