I downloaded most of his apps. No issues. No cons! All pros! Yes the Hebrew lacks vowel points, but this is the norm in Hebrew learning apps. The games are many and work well, and I have brain damage and am learning! Works for MENSA too! How? Just play the game once and done. Matching, Spelling easy, spelling hard, listening matching, and more. To earn flowers for free upgrade as MENSA might bore you depending on how many flowers can be earned with only doing all games twice, but for average person, this would work well. I bought Polish and will buy Hebrew after expert level is complete. I've found no errors in any app. I have De, Fr, It, Es, Ru, Po, Dk, Nl, Croation, Czech, Hungarian and ??? of his apps. I've looked through most of them - including 6000 words app. Recommend using with Semper and Duolingo, because this app completes them.