The Type Devanagari Keyboard allows you to use the current English keyboard you're already familiar with, with a few extra special keys, to type in Devanagari using IAST-inspired syntax. For example "ā" can be typed as "-a", with "आ" as the output, or "ṇ" can be typed as "n." with "ण्" as the output, making it very easy to use for those who know the IAST - Devanagari scripts. No need to memorize a whole new Sanskrit keyboard! Just use what you know.