RepeatBox is a free educational app designed for iPhone users that integrates spaced repetition and active recall techniques to boost memory retention. This user-friendly application supports various learning scenarios such as memorization and review, making it a versatile tool for students and learners alike. It features an OCR function for easy text extraction from images, allowing users to input content from books and notes seamlessly.

The app also includes a learning record and analysis feature that graphs accuracy rates by subject, helping users identify strengths and weaknesses. An AI chatbot, named Knowledge Tutor, assists users by summarizing content and answering questions, enhancing the learning experience. With automated backup options for data protection, RepeatBox is tailored for effective study practices, whether for language learning, exam preparation, or general knowledge retention.