This app is realy works fine. You can change your system fonts to onother by choosing from the list.
Only for ROOT s!

How to use:
1. Install the usual way.
2. Agree with root-rights to the application.
3. Select your favorite font.
4. Resize font if you want to.
5. Press "Set" button.
6. Wait for message about completed procedure.
7. Reboot.

Now you reached new function - fonts resizing. Some fonts are really need in this function.

Some models of Samsung and LG are not compatible. They have font changer engine from producer.