Try it here: https://keurstudio.fr/Memoriz_demo/
Recommandations: - on the Kanjis series n°0, click on "Start tutorial"; - once the tutorial is completed, you may try Kanjis series n°1 or switch to Hiragana or Katakana mode (by clicking on the top left buttons on the main menu); - resources might take up to a few minutes to load.