SpellIt is an Android application developed by Erik C. Thauvin, available for free on the Google Play Store. This app falls under the Education & Reference category and is a phonetic speller. It is not a spell checker but rather a tool to help you spell out words phonetically.

The app is straightforward and easy to use. It provides a phonetic pronunciation guide for each letter of the English alphabet. The user can either enter a word to hear its phonetic spelling or use the NATO alphabet to spell out a word. The app also provides a history of previously searched words, making it convenient for users to revisit and reuse them.

Overall, SpellIt is a useful tool for anyone who needs to spell out words phonetically, such as language learners, public speakers, and radio operators. However, it is important to note that this app does not provide a spell-checking feature, so it may not be suitable for those who need to check the spelling of words.