Tahrir App funktioniert nicht

There is a new web-based font tool you can use to add and remove your own fonts alongside with more than 150 built-in fonts to Tahrir.  You can use the new snap tool to align texts to center of the screen or edges of other texts on the screen.  All you need is a computer connected to the same WiFi network which hosts the fonts.  You can use built-in fonts, backgrounds, and colours, or use your own.  Sort fonts by language and hide unnecessary fonts.  Tahrir is the ultimate tool to write on images.  In addition to shadow you can add underline, stroke, and strikethrough to texts.  Images are saved as editable documents, you can re-use them later.  The UI is simple as possible, to make you focus on your design.