Best AI Readability Checkers in 2026

When you need to make writing easier for readers to follow, readability checkers offer different ways to assess text and guide revisions. Compare readability scores and grade-level analysis with sentence complexity, and check which input formats suit the material you want to review. Plain-language rewrites and accessibility guidance can be useful when you need suggestions as well as measurements. Free-plan availability and paid-from pricing help you weigh those capabilities against cost. ToolsVale Readability Checker, eReadable, and Health Literacy Advisor are among the named options to consider, alongside A2Z Tools Plain Language Analyzer and Hemingway Editor. The most relevant signals depend on your audience and the kind of text you’re working with.