Magic Life Counter -- Try it!
A simple life counter utility for Magic the Gathering, written in Elm.
We are offering some mobile builds. There has not been much testing done. If you try it, please share your experience with us through the bug tracker.
Android -- Try it!
Should be fully compatible with Android 4.4 (KitKat) and higher. Should be compatible with earlier versions of Android, although (CSS3) animations are not supported.
Firefox OS -- Try it!
Thanks to @kirchner for this.