English Writing Tutor is a free iPhone application developed by Luong Thi Hoai Thu, falling under the Education & Reference category. This program offers a comprehensive set of tools to improve English writing skills for second language learners. It includes features like spell checking, grammar correction, essay scoring, punctuation checking, and spell checking.

Users can benefit from automated writing evaluation, receiving scores and formative feedback on various writing assignments. The English Writing Tutor is particularly useful for tasks such as checking job application cover letters, essays, and practicing IELTS academic writing tests. With its diverse range of functions, this app serves as a valuable tool for enhancing writing proficiency in English.