The 5.0.2 version of Gridded for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. Gridded for Mac relates to Education Tools. This free Mac app is a product of Theodore Mitchell.
From the developer:
Gridded is a free flashcard system specifically designed for learning languages. The app has a uniquely visual spaced repetition system that allows you to see at a glance, based on the hues of your flashcards, which cards need reviewing and how long before each card next needs to be reviewed.
You may want to check out more Mac applications, such as Access Grid, Grid Calculator Basic Edition or Grids, which might be similar to Gridded.