Anki import
Import an Anki .apkg file, choose note and card types where needed, map fields and preview the result. Basic import is free. Premium adds one image per card and study progress when the export contains it.
Quizlet import
Export one of your own original Quizlet sets as text and paste it into Flexi. Use one card per line, with a tab between term and definition. Vocabulary text is imported; images and study progress are not.
CSV import
Import words, translations, definitions and examples from a CSV file prepared in a spreadsheet. Each import creates new cards rather than updating existing ones. Images are not included.