Displays the balance of your Helsinki Region Travel Card (Matkakortti) on your home screen.
Unofficial, not supported by HSL in any manner. Use at your own risk.
The application is currently only available in Finnish, sorry.
For bug reports and feature requests, see https://github.com/dezgeg/matkakortti-widget/issues
Source code available under GPLv2 at https://github.com/dezgeg/matkakortti-widget