More than a spell-check. Paste your essay and get a grammar score, passive voice percentage, academic tone rating, and a breakdown of every error type — before you submit.
14 issues detected · Passive voice: 31% · Tone score: 72/100
Sentence 1 — comma splice: "The study examined three variables, results were unexpected." Split into two sentences or add a conjunction. Sentence 3 — passive voice: "The conclusions were reached by the team." Rewrite as: "The team reached the conclusions."
Sentence 5 — Subject-verb agreement error: "The data shows" should be "The data show" in formal academic usage. Sentence 7 — Tense shift: paragraph opens in past tense but switches to present in sentence 7 without cause. Sentence 9 — Dangling modifier: "After analyzing the results, several gaps were identified" — who analyzed the results? Sentence 11 — Wordiness: "Due to the fact that" → replace with "Because." Sentences 12–15: Passive voice cluster — 4 consecutive passive sentences reduce argumentative force significantly. Academic tone flags: 3 instances of casual register ("a lot of", "things", "basically") should be replaced with formal equivalents. Passive voice percentage: 31% — above the recommended 25% threshold for argumentative essays. Target: reduce to under 20% for this essay type.
One check covers grammar, style, tone, and ESL patterns — every layer of academic essay quality.
Comma splices, run-ons, subject-verb agreement, tense shifts, dangling modifiers, apostrophe errors, and more.
200+ error typesPercentage of passive constructions in your essay vs. the recommended threshold. Each passive sentence flagged individually.
0–100% scoreFlags casual phrasing, contractions, informal word choices, and over-hedging that reduce formal academic register.
Tone score 0–100Article errors (a/an/the), preposition misuse, and structural patterns that appear in non-native English academic writing.
ESL-awareIdentifies redundant phrases ("due to the fact that," "in order to," "it is important to note that") with concise alternatives.
50+ patternsEvery issue is tied to a specific sentence with an explanation of why it's flagged and a concrete correction suggestion.
Full AI-PlusNot all writing tools check the same things. Here's what each type catches — and misses.
Try all 35+ AI tools — grammar checker, plagiarism detector, paraphraser, and more.
Try all 35+ AI tools for 7 days. No commitment.
$39.99 — unlimited access, all 35+ tools, cancel anytime.
$39.99/mo — save 80%, billed annually.
An essay checker is a tool that analyzes your submitted text against a set of grammar rules, style patterns, and academic writing conventions, then returns a structured report of what needs attention. It's not a writing assistant that rewrites your essay for you — it's a diagnostic tool that tells you what's wrong and why, so you can fix it yourself.
The key difference between a basic spell checker and a real essay checker is the depth of analysis. A spell checker identifies misspelled words. An essay checker identifies the sentence-level patterns that actually cost students marks: comma splices that their word processor approved, passive voice clusters that make three paragraphs read identically weak, tense shifts between their introduction and their conclusion, subject-verb agreement errors buried in long noun phrases. These patterns don't show up red in Word. They only appear when you run a tool that understands sentence structure.
The checker is calibrated for academic essays but works across multiple document types that students and researchers submit.
The most common essay type in undergraduate courses. The checker focuses on active voice in argument sentences, clear subject-verb agreement in complex claims, and academic tone in the framing of positions.
Research papers have higher passive voice tolerance in methods sections but require strong active voice in argument and discussion sections. The checker recognizes this distinction and calibrates its passive voice flags accordingly.
Literature reviews frequently use phrases like "Smith (2020) argues that…" — these are grammatically complex structures with embedded clauses that many general grammar tools misparse. The essay checker handles them correctly.
Online discussion posts for courses often need to maintain formal register even when the format is informal. The tone checker flags when a post drifts into casual language that would be inappropriate for academic assessment.