What's a good Android app for a smartwatch face that doesn't drain the battery but still looks sharp and customizable?

BRN109 is a watch face application that specifically addresses the common trade-off between battery longevity and visual design on smartwatches. For users prioritizing extended wear time without resorting to bland displays, this app offers a compelling solution. Its core strength lies in battery optimization, as highlighted by real-world usage on devices like the Galaxy Watch 7, where it consumed merely 11% over a full day. The watch face presents essential information—such as time, date, and battery status—in a clean, analog-inspired layout that remains legible. A standout feature is its always-on display (AOD), which reviewers praise for maintaining a stylish appearance while minimizing power draw. Customization is straightforward, limited primarily to changing accent colors, which some might find restrictive compared to apps with more complex editing tools. However, this simplicity contributes to its stability and battery performance. The design avoids unnecessary animations or overly bright elements that typically tax the battery. In practice, it suits professionals or daily users who need a reliable, informative face that won't require frequent charging. While it may not satisfy those seeking highly intricate themes or interactive complications, BRN109 excels in its niche by balancing efficiency with a sophisticated aesthetic, making it a dependable choice for sustained use.