PaperTrail™ Academic

You've read thousands of student essays.
Trust that instinct — then document it.

Four tools that give teachers structured, repeatable, documentable insight into how student writing was produced — from process monitoring in the classroom to deep post-submission analysis. The evidence speaks clearly. The judgment stays yours.

No account required to start No student data stored Works inside Google Classroom documents Built by a teacher
✏️
Inspect  Free
How was this written? Sessions, pastes, struggle moments — and a printable Process View report.
Learn more →
🔍
StyleMatch™  $4.99/mo
Does this sound like them? Eight stylometric metrics compare submitted work to a known sample.
Learn more →
🔬
Verify  From $0.60
Is the writing internally consistent? AI-assisted close reading. Two report types.
Learn more →
🖊️
Write  $49/yr
Timed in-class writing sessions with a full process log.
Learn more →

A structured, repeatable, documentable data point for the hardest conversation in teaching.

The PaperTrail Suite

Four tools. One question: Did they write this?

Click any card to see a full preview and feature breakdown.

"Something about this essay doesn't add up."

Reconstruct the full revision history of any Google Doc — every session, paste, and pause — into a clear, documentable timeline.

  • Full revision timeline & paste log with novelty scores
  • Session history — when and how long they worked
  • ⚡ Struggle moment detection — regions of heavy revision
  • Revision playback — watch it being written
  • 📊 Process View — printable observational report (PDF)
The Social Contract — Final Draft
📄
Inspect
Summary
Pastes
Flags
47
Revisions
23m
Active
3
Pastes
📅 Timeline
📋 Paste #2 — 847 chars 82% Novel
"The social contract, as Rousseau described, represents a fundamental agreement…"
⚡ High-Density Revision · Para 2
412 chars rewritten · 8 revisions · 4m 12s · Early-draft position
Revision #31 diff
the argument remains unclear to scholars
the philosophical implications of this debate
have been studied in modern contexts.
Session 2 · Nov 14, 9:38 PM
18m · 1,240 chars · 2 pastes

Everything you need to understand a writing process

  • Full revision timeline — every edit laid out chronologically
  • Paste detection & paste log — flagged with timestamp, character count, and novelty score
  • Session history — date and time the student opened and worked on the document
  • ⚡ Struggle moment detection — regions where the writer cycled through deletions and rewrites in the same place
  • Revision playback — watch the document being written from the first character
  • 📊 Process View report — a printable, observational PDF summarising sessions, paste activity, struggle moments, and five research-cited writing-process metrics. Form fields for student/assignment/course are filled in the browser before printing — no transmission.
  • Activity flags — unusual patterns automatically surfaced
Free
No account required. Installs in seconds.
⬇ Add to Chrome — Free
Inspect reads Google Classroom document revision metadata. Requires Editor or Owner access to the document. No document content is stored or transmitted.

"This doesn't sound like them."

Compare a known writing sample against the submitted work using eight research-based stylometric metrics. The only PaperTrail tool that compares two pieces of writing against each other.

  • Eight stylometric metrics — function words, discourse markers, punctuation fingerprint, sentence rhythm, vocabulary, and more
  • Controlled-vs-submitted comparison — the structural feature Inspect cannot offer
  • Divergence ratings per metric: Similar / Notable / Divergent
  • Printable PDF report with research citations and per-metric interpretation
  • Runs entirely in your browser — no text ever transmitted
🔍 StyleMatch — Authorship Consistency Report
Controlled: 847 words · Submitted: 1,204 words
J. Martinez · Nov 14, 2025
FK Grade Level
92% Similar
Type-Token Ratio
87% Similar
Avg Sentence Length
81% Similar
Punctuation
82% Similar
Informality Markers
98% Similar
Sent. Rhythm (SD)
68% Notable
Discourse Markers
43% Divergent
Function Words
3% Divergent
⚠ Analytical data point — not a finding of fact. Educator judgment required. Not suitable as sole basis for any disciplinary action.

Eight metrics. Research-backed. Entirely private.

The question StyleMatch answers: does this submitted piece of writing carry the same stylistic fingerprint as a known sample by the same student? Inspect describes the writing process; StyleMatch compares two pieces of writing.

  • Grammatical Function Words — Burrows' Delta over 30 core function words; among the most stable authorship signals in computational stylistics
  • Discourse Marker Profile — Burrows' Delta over 29 connectives & stance markers; reflects reasoning habits
  • Punctuation Fingerprint — comma, semicolon, dash, colon, !, ? rates per 1,000 characters
  • Avg Sentence Length — characteristic length that persists across writing tasks
  • Sentence Rhythm (SD) — standard deviation of lengths; captures varied vs. uniform rhythm
  • Type-Token Ratio — vocabulary range; interpreted cautiously across different text lengths
  • Flesch-Kincaid Grade Level — reading complexity; stable across tasks for the same writer
  • Informality Markers — contraction rate & first-person pronoun rate
  • Pairs naturally with Inspect's Process View report — together they answer how was this written and does it sound like them
  • All computation runs locally — no text ever transmitted
  • Minimum 500 words per sample required
$4.99/month
or $49.99/year — save 17%
See full pricing ↓
StyleMatch is a probabilistic tool. Genre-constrained writing (lab reports, TOK essays) may show inflated similarity on some metrics. Always apply professional judgment. All reports include a mandatory disclaimer.

"I want to be thorough before I have this conversation."

AI-assisted deep stylometric analysis — examine internal consistency within a single essay, or compare it against a controlled writing sample across ten research-grounded dimensions.

  • Consistency Report: chunks essay into segments, scores 6 dimensions each
  • Baseline Deviation Report: 10-dimension comparison vs. controlled sample
  • AI-suggested follow-up questions for the student conversation
  • Printable PDF — no text retained after analysis
🔬 Consistency Report — S. Okonkwo 78 · Consistent
Stylometric Heatmap — 29 chunks · 0 flagged
1
2
3
4
5
6
7
8
Register5.6 / 10
Vocabulary5.8 / 10
Argument Depth6.0 / 10
Error Density7.5 / 10
🔬 Baseline Deviation — S. Okonkwo 2 Anomalous
2
Anomalous
2
Notable
6
Within Range
Function Word Distribution — 43/100 similarity
Error & Mechanics Fingerprint — characteristic errors absent
Syntactic Patterning — notable shift in sentence openings

Two reports. Ten dimensions. One conversation.

  • Consistency Report — analyses a single essay in 29 chunks across Register, Vocabulary, Sentence Complexity, Argument Depth, Error Density, and Cohesion. Produces a heatmap and writer baseline profile.
  • Baseline Deviation Report — compares submitted work against a controlled sample across 10 dimensions: Function Word Distribution, Orthographic Habits, Punctuation Micro-Patterns, Syntactic Complexity, Syntactic Patterning, Cohesive Device Profile, Error & Mechanics Fingerprint, Nominal vs. Verbal Style, Phrase Recurrence, and Lexical Diversity.
  • Each dimension rated: Anomalous / Notable / Within Range
  • AI-generated recommended next steps and suggested follow-up questions for the student conversation
  • Research citations included — 10 peer-reviewed sources
  • Printable PDF report with Report ID for institutional records
  • No text retained after analysis is complete
  • Credits never expire — use when the situation calls for it
$0.60/report
Starter: 10 for $6  ·  Semester: 35 for $18  ·  Year: 100 for $45
See all credit packs ↓
Verify transmits submitted text to PaperTrail's secure backend and the Anthropic API for processing. Text is not retained after the report is generated. See our Privacy Policy for full details.

"I want to see how they actually write."

A focused, timed writing environment for in-class assignments. Students write; the session records the process. Teachers see a full behavioral log on submission.

  • Timed sessions with teacher-controlled join code
  • Paste detection, focus-loss events & process log
  • Student transparency screen — they know what's captured
  • Session reports: submission text + behavioral timeline
PaperTrail Write Essay: The Ethics of AI
38:14
This session is being documented
Work is saved automatically
Save Now
Submit Essay →
Process Log — Teacher View
09:04:12 SESSION START Jordan M. — joined
09:06:38 PASTE 214 chars — external source
09:18:55 FOCUS LOST Window left — 42s
09:46:02 SUBMITTED 487 words — 41m 50s

What Write gives you that a shared Google Doc doesn't

  • Timed sessions — set a duration; students see a countdown; the window locks on expiry. No extensions without a deliberate teacher action.
  • Join-code access — students join via a short code, no account needed. Teachers control who can submit and when.
  • Paste detection — every paste event is logged with a timestamp, character count, and whether the content was subsequently deleted.
  • Focus-loss tracking — if a student leaves the writing tab, the duration and timestamp are recorded in the process log.
  • Student transparency — a mandatory, non-skippable screen tells students exactly what is and isn't captured before they begin writing.
  • Session reports — on submission, the teacher receives the full essay text alongside a structured process log. Reports can be downloaded as ZIP.
  • No student accounts — students never register or log in. Nothing is stored beyond the teacher's download window.
  • Plain text, no assistance — spell check, grammar check, and autocorrect are all off. Students write without AI-augmented support.
$49/yr
Includes unlimited sessions
Go to Write →
Write captures behavioral metadata — paste events, focus changes, and timestamps. Students are shown exactly what is recorded before the session begins. No clipboard contents, keystrokes, or off-tab activity are accessible.

An evidence base, not a verdict

Three independent signals. Together, an honest evidence base.

No single tool can determine whether work is authentic. PaperTrail is built around the idea that defensible educator judgment comes from multiple independent sources of evidence — each answering a different question.

📊 Process View FREE

How was this written?

Sessions, paste activity, struggle moments, and writing-process metrics — a printable observational report on how the document was assembled. Free, runs entirely in your browser.

🔍 StyleMatch

Does this sound like them?

Eight stylometric metrics compare the submitted writing to a known sample by the same student. The only PaperTrail tool that compares two pieces of writing against each other.

📑 Source matching External

Did the words come from somewhere?

Tools like Turnitin or your institution's source-matching service answer a question PaperTrail does not — surfacing matches against published sources, prior submissions, and AI-generated text.

A document that is flagged by source-matching, shows stylistic divergence in StyleMatch, AND shows surface editing only in Process View is a different conversation than any of those signals alone. The evidence stack is what makes the conversation defensible.

Verify (AI-assisted close reading) is a fourth signal available when the situation calls for deeper analysis — see below.

Pricing

Start free. Upgrade when you need to.

Inspect is free forever, no account required. StyleMatch and Verify are for when the situation calls for more.

✏️ Inspect

Free

No account required

$0
  • Full revision timeline
  • Paste detection & paste log
  • Session history
  • ⚡ Struggle moment detection
  • Paste novelty analysis
  • Revision playback
  • 📊 Process View report (PDF)
  • StyleMatch authorship comparison
  • Verify deep analysis reports
⬇ Add to Chrome — Free
🔬 Verify

Pay per report

AI-assisted close reading

$0.60/report

Starter: 10 reports for $6

  • Everything in Inspect
  • Consistency Report — chunks essay into segments, scores 6 dimensions each
  • Baseline Deviation Report — 10-dimension comparison vs. controlled sample
  • Stylometric heatmap & writer baseline profile
  • AI-suggested follow-up questions for the student conversation
  • Printable PDF with Report ID for records
  • No text retained — credits never expire
Buy Verify Credits
🔬 Verify Credit Packs
Credits never expire. Use as the situation calls for it — no subscription required.
Starter
10
reports
$6.00
$0.60/report
Buy Now
Semester
35
reports
$18.00
$0.51/report
Buy Now
Year Supply
100
reports
$45.00
$0.45/report
Buy Now

For Schools & Departments

Built to pass the IT review.

When a teacher brings PaperTrail to their department head or IT coordinator, we want the answer to be easy.

  • Inspect (with the Process View report) and StyleMatch run entirely client-side — no student text ever leaves the browser
  • No student accounts, logins, or data collection of any kind
  • Inspect reads revision metadata only — not document content
  • Verify text processed securely and not retained after analysis
  • No advertising, no data resale, no third-party tracking
  • Teacher accounts only — students never interact with the product
Contact us for school & department inquiries
🔒
FERPA
Conscious
🇪🇺
GDPR
Aware
🚫
Zero Student
Data

Get in Touch

Every email gets a real reply.

Questions about how PaperTrail works, privacy concerns, school and department inquiries — PaperTrail Academic is built by a teacher.