aggregated statistics on battery consumption of a watchface

Different watchfaces consume different amounts of power due to their use of scripts and features. On my Huawei Watch (original), some watchfaces will be fine for the whole day, whereas others will only give me 10-12 hours until I have to recharge the watch.

Watchmaker could gather statistics of watch battery depletion (battery % reduction per hour) for each watchface. If this is averaged over many days of use, and synchronized back to the WatchMaker app on the phone, the app can then show the average battery usage (e.g. predicted running time until battery depletion) for each watchface.

I would have to use a watchface for a few days until enough statistical data has accumulated for meaningful results, but over time my favourite watch faces would get a battery life indicator. I could compare the effectiveness of different watchfaces in term of battery efficiency.

For what it's worth: WatchMaker could synchronize battery consumption data from all users of a watchface to a central repository and calculate & display predicted battery consumption for a watchface. So before you even download and install it, you would know what to expect from other users experience.