Grammarly - Clear, effective, mistake-free writing everywhere you type.
SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.
Synonymful - Improve your vocabulary and communicate like a pro.
FlipToMind - Space repetition app to help you remember everything
Analyze My Writing - Analyze My Writing is an online text content and readability analyzer.
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.