Fleschkey

Fleschkey is a smart text editor and chat assistant that helps you write with better readability, clarity, and style. Instead of guessing whether your message lands, you get objective feedback based on a range of readability metrics, so you always know how easy your text is to understand.

Built for clear communication, Fleschkey provides real-time readability analysis as you write, highlighting exactly where sentences may be too dense or hard to follow. It also offers Notion-like building blocks that make it easy to organize thoughts, restructure ideas, and shape rough notes into polished drafts.

Privacy and security come first. Everything you create stays locally on your device and is never shared with third parties, so you can write freely about any topic knowing your content remains entirely yours.