There's no settings (on purpose), however you can adjust the text size with the volume buttons.

Use colors to organize notes. Optionally add labels to colors. Eight eye catching colors are included, and eight more are available as in-app purchases. Widget is included.

You can export your notes to Google drive or to external storage (SD card). Importing will not create duplicates. Only new or updated notes will be imported. You can use Google drive to synchronize notes between your devices.