Pebble Time is awesome!
However, it has some limitations. Lots of characters are not displayed properly on Pebble Time, and if you live in a country where those chars are the main ones, this can be frustrating.
This app can install a font package on your Pebble Time to enable support for multiple characters.
At the time, five sets are supported:
Cyrillic fonts
Chinese fonts
Japanese fonts
Greek fonts
Hebrew fonts
Thai fonts
Vietnamese fonts