Pebble was one of the first modern smartwatches when it launched on Kickstarter in 2012 (I still have mine). It became popular for its long battery life, massive library of applications, and open software, and was later followed up by several more models. Pebble shut down in 2016 after running out of funds, but not before the company updated its watches to continue functioning without a central server. The community-run ‘Rebble’ project has continued to keep the watches alive with updated software, and now Rebble has released a new app to keep Pebble watches functional on newer devices.
See This app helps Pebble watches work with new Android phones
The new Sideload Helper app from the Rebble project makes it much easier to install apps on Pebble watches from newer Android phones.