The stories are easy to read, they are short and funny stories with a beautiful message.
The entire electric mop is about 30 pages with pictures and puzzles.
You get full access to the reading material (pdf) and audio files (mp3).
You are not tied to a certain number of devices, which means that the kids can use the content freely at home and e.g. at grandma and grandpa's.
You can download the content and have e.g. on the phone or on the computer.