Good but exhausting advertising and sound

Very good app but sadly a very annoying advertising appears regularly about the other app (katakana). When you already have (or not) its very irritating !
Theres also no possibility to shut off the sound : even with no volume theres a beep !
For both reasons 1 to 2 stars less...
To be updated ?

Tonioi about Dr. Moku's Hiragana Mnemonics, v1.05