Why it works

This tool scores writing against a practical rubric used by teachers and admissions readers:

• Clarity — sentence length & readability signals
• Structure — intro/body/close cues and flow
• Evidence — presence of specifics, numbers, examples
• Style — vocabulary variety and rhythm
• Mechanics — spacing, capitalization, and punctuation checks
• Originality — cliché detection
• Impact — presence of a memorable close

It’s fast because the first version uses smart heuristics (no paid API required). You can later enable “deep review” with your own API key for an AI pass on top of the rubric.