Wiki says: Pebble is a discontinued smartwatch developed by Pebble Technology Corporation. Funding was conducted through a Kickstarter campaign running from April 11, 2012, through May 18, 2012, which raised $10.3 million; at the time, it was the most funded project in Kickstarter history. Pebble began shipping watches to Kickstarter backers in January 2013. Pebble watches can be connected to Android and iOS devices to show notifications and messages. An online app store distributes Pebble-compatible apps from many third party developers, including ESPN, Uber, Runkeeper, and GoPro.
An unofficial developer group called Rebble was created to extend support for the Pebble watches' online services that were discontinued on June 30, 2018. Pebble users and enthusiasts created the Rebble.io website in December 2016 following the announcement of Pebble's shutdown.
A handy time measuring tool. You can create up to 10 independent timers and/or stopwatches. There are in fact no limits for maximum measured time. Stopwatches offer precision of hundredths of a second, support split time, and have a 30 lap history. Timers notifies you using vibrations. The app is optimized for battery saving by refreshing time display only once per second.
Watchface, app, which shows time on the home screen of the watch. This watchface shows both digital and analog time, a day of the week and current date. Moreover it notifies on low battery level and on lost phone connection. On lost connection it also vibes shortly.