What is an AI document audit trail?

An AI document audit trail records every change to a document — human or AI — including who made it, what changed at the word level, and whether a person reviewed it before approval. iterthink calls this a document review layer: it sits between drafting and approval, tracking what changed, who changed it, why it matters, and whether a human has reviewed the result before it becomes final.

Why does iterthink slow you down instead of automating changes?

Everyone is adding AI that edits documents automatically. iterthink does the opposite — it shows you exactly what changed and lets you decide before anything becomes final. That is abstract's Review step: disagree with the consensus that speed means skipping human judgment. Control at the right moment beats automatic changes you cannot audit.

Why is iterthink a one-time desktop license instead of SaaS?

Typical SaaS means you rent access, your files live on someone else's servers, and the bill never stops. iterthink is a desktop app you install once — one payment, every future update, documents stay local. You own the software; you are not locked into a subscription that can change price or disappear.

How does iterthink compare to Google Docs, Notion, Confluence or Bluebeam?

Google Docs, Notion, and Confluence are mainly writing and knowledge tools, while Bluebeam focuses on drawing markup. iterthink is focused on review governance: word-level diffs, AI-assisted impact analysis, approval gates, and an audit trail for document decisions.

Who is iterthink designed for?

iterthink is designed for teams that need accountable document changes, especially in architecture, engineering, construction, consulting, legal, operations, and other workflows where revisions need to be reviewed before they are trusted.

What file formats does iterthink support?

iterthink supports Markdown, DOCX, and PDF workflows, including vector PDFs and scanned documents. It is designed for structured work with plans, reports, and related project documents.

How does iterthink track changes and version history?

iterthink records word-level changes, review status, approval decisions, and AI analysis over time. The goal is to make the full path from draft to final document visible instead of hiding decisions across filenames, comments, and chat threads.

Is there a free trial or free plan?

Yes. iterthink has a free plan for personal and non-commercial use. Commercial individual, team, and enterprise licenses are available for organizations that need production use, onboarding, and support.

How does iterthink meet compliance requirements like GDPR, SOC 2, or HIPAA?

iterthink is installed locally as an app for accessing and reviewing your document workflows. Compliance requirements such as SOC 2 or HIPAA mainly depend on the LLM provider, hosting setup, data processing agreements, and operational controls your team configures around it.

Catch every change to your document. Before it costs you something.

A document can look clean, sound convincing, and still be wrong. iterthink protects you from expensive mistakes.

Catch every change you'd otherwise miss
Understand the impact, paragraph by paragraph
Keep a record of human approvals

Start free How it works

Free for personal use. Runs locally. No account.

A civil engineer with a hard hat and hi-vis vest sits cross-legged and relaxed, a construction plan on his lap, palms open

As featured in

6
Years on the market: 100+
B2B & public-sector clients: 1
Owner-led company

Can you spot the difference?

Take the test. Two versions of the same paragraph, differing in exactly one place. Can you find it?

Compare them word by word. Tap a version when you're ready.

«Deviations from the approved design are not permitted without written approval.»

The problem → the solution

How iterthink protects your process.

Unnoticed changes slip through

When you compare manually, you miss changes. AI rewrites stay invisible.

Every change becomes visible

iterthink flags every change instantly. Whether it comes from a person or an AI.

A single wrong word becomes a liability

Small changes flip the meaning. Your client finds the error first.

Stop errors before they get expensive

iterthink shows you what a change triggers before you approve.

Audits take forever

Who changed what? Finding out costs you days.

Audit-ready in minutes

The complete history, with names and timestamps. You hand over one file.

Knowledge leaves when people leave

With every departure, the why behind old decisions disappears.

Nothing gets forgotten

Every decision stays in the system, with its reasoning.

The features

Save time and buy peace of mind.

See every change instantly.

iterthink compares versions word by word. You see every change flagged, whether it comes from a person or an AI.

Civil engineer reviews a change on his laptop in the evening

fireprotection_report_v7.pdf 1 critical

Before

«… must achieve EI 90 and be verified before handover.»

After

«… must achieve EI 60 and be verified before handover.»

Understand every change instantly.

iterthink shows you what a change triggers and which sections depend on it. You decide before anything is final.

Architect sees the impact of a change on his laptop

Impact of the change critical

The fire-resistance class drops by one level. Conflict with the escape-route concept, section 7.3. The handover certificate would be invalid.

03 Extension with {yourcompany}os

Approvals become workflows.

If your company uses {yourcompany}os, every iterthink approval automatically triggers what happens next: email, task, filing.

An approved plan triggers email, task and filing automatically, shown as a glowing chain of objects on the desk

Log · v7 approved

10:04:12 ✓ v7 approved

→ Email to the project lead automatic

→ Task «Reprint plan 4.2» created automatic

→ Project archive updated automatic

triggered via {yourcompany}os

By the way: iterthink is a desktop app.

Install it, done. No cloud, no uploads: your plans and reports stay on your machine. Available for Windows and Linux.

Download now

Free for personal use.

See how iterthink works.

v6 → v7 · Section 4.2 · Fire protection 1 critical change flagged

Before

«The fire wall between the storage and assembly areas must achieve EI 90 and be verified before handover.»

After

«The fire wall between the storage and assembly areas must achieve EI 60 and be verified before handover.»

Impact of the change critical

The fire-resistance class drops by one level. Conflict with the escape-route concept, section 7.3. The handover certificate would be invalid.

rejected · m.keller · 09:52:30 ✓ human-reviewed

Step 1 · Detect

Every change, word by word.

Human edits, AI rewrites: nothing stays hidden. No matter how well it reads.
Step 2 · Understand

The consequences, before you approve.

iterthink shows what depends on the change. You decide with the full picture.
Step 3 · Record

The proof that a human decided.

Who, what, when. Every change is recorded in a tamper-proof log.

Audit trail · fireprotection_v7

09:41:07 v6 imported · m.keller

09:41:09 312 words changed · 1 critical

09:52:30 EI 90 → EI 60 rejected · m.keller

10:04:12 v7 approved · m.keller

Log sealed · tamper-proof after the fact

In the end, there's a sealed log.

Every change and every decision sits sealed and time-stamped in the log. For an audit you hand over a single file and save yourself a week of detective work.

Check the tool on GitHub The source is open, everything runs locally. Your files never leave your machine.

Your data. Your code. Your files. Your software.

You control your data

Everything runs locally on your machine. You decide which AI you connect: your own model, your company's, or a cloud service. Sensitive data is removed automatically beforehand.

You stay independent

Your files are in open formats that open without iterthink too. You can export everything and inspect the source anytime. Your work belongs to you.

A log no one can rewrite

Every change is recorded automatically, from the first draft to approval. Nothing can be altered after the fact. In an audit, that's exactly your proof.

Approved is just the beginning. Automate what comes next.

iterthink comes from abstract, a Swiss team for building data. With {yourcompany}os every approval becomes the starting signal for automatic workflows in your company.

iterthink

You are here. Free.

Shows every change to documents and plans.
{yourcompany}os

Approvals become workflows

Runs the next steps automatically after approval.

Discover {yourcompany}os

Why teams switch to iterthink

Most tools track files. iterthink tracks decisions.

Category	AI chatbot	Bluebeam	Word / Google Docs	iterthink
Purpose	General questions, drafts	Markups on plans	Text editing	Document review and approval
Change tracking	▲ Skims	▲ Plans only	▲ Cluttered inline	✓ Word-level comparison
Spot impact	▲ Guesses	✕ None	✕ None	✓ Automatic
Audit trail	✕ None. The chat forgets everything	▲ Basic logs	✕ AI changes invisible	✓ Complete, for human and AI
Control over the AI	✕ Is the black box itself	✕ None	✕ Black-box AI	✓ Transparent and controlled
Collaboration	✕ Single-person chat	▲ Lost between files	▲ Changes lost or overwritten	✓ Clear review and approval flow
Data sovereignty	✕ Your documents into the US cloud	▲ Desktop + US cloud	✕ US cloud only	✓ You choose: local or private cloud
Usability	✓ Easy, but no proof	▲ Technically complex	▲ Overloaded	✓ Focused
Error protection	✕ False sense of security	▲ You compare it yourself	✕ Hidden changes	✓ No missed change
Inspect the source	✕ Models not inspectable	▲ Closed software	▲ Closed software	✓ Open on GitHub

Change tracking

✓Word-level comparison. Chatbots skim, Word hides changes in the clutter.

Audit trail

✓Complete log for human and AI. Chatbots forget everything, Word and Docs don't see AI changes.

Data sovereignty

✓You choose: local or private cloud. The rest defaults to the US cloud.

Inspect the source

✓Open on GitHub. The alternatives are closed software.

Cheaper than one missed error.

You pay once, all future updates included. An error that slips through to the construction site costs many times more.

Free

Full product

For personal, non-commercial use

0 CHF

✓All features included
✓Connect your own AI

No account. No cloud. Works without your own AI access.

Start free

Individual

For one commercial user

490 CHF

✓All features included
✓Commercial-use license
✓Connect your own AI

Buy now

Team

For up to 5 commercial users

1'950 CHF

✓All features included
✓Commercial-use license
✓Connect your own AI
✓Priority support available

Enterprise

For larger teams and organizations

On request

✓All features included
✓Commercial-use license
✓Guided onboarding included
✓SLA available

Optional add-ons

Swiss AI Hosting

Private AI, hosted in Switzerland. No data training. No US cloud. GDPR compliant. 2,000,000 tokens per user per month.

25 CHF / user / month

Add

{yourcompany}os

Turn approved documents into automatic action. Emails, tasks, and decisions, triggered by your approvals. Hosted in Switzerland.

Frequently asked questions

What does iterthink actually do?

iterthink shows you, for every document, what changed, who changed it, and whether a human approved the change. Whether the change comes from a person or an AI. So you see at a glance what happened between draft and approval, instead of hunting through emails and file versions.

Why doesn't iterthink just automate changes?

Many tools build in AI that rewrites documents on its own. iterthink does the opposite: it shows you every change, and you decide before anything is final. Control stays with you, at the right moment.

Why is iterthink a desktop app you buy once, not a subscription?

With most subscriptions you only rent access, your files sit on someone else's servers, and the bill comes every month. iterthink you install once. You pay once, get all future updates, and your documents stay on your machine. The software is yours.

Does iterthink collect my data?

No. Everything stays local on your machine. Your documents are not used to train AI models and not uploaded to a cloud. The knowledge from your approvals (what changed, why it mattered, who approved) stays in your company.

What can iterthink do that Google Docs, Notion, Confluence or Bluebeam can't?

Google Docs, Notion and Confluence are for writing and collecting knowledge, Bluebeam for markups on plans. iterthink takes care of approval: it shows changes word by word, explains their impact, records approvals and documents who decided what.

Does iterthink work with ChatGPT, Copilot or other AI tools?

Yes. You can connect your own AI provider, whether a local model, a company-internal model or the cloud. Your AI tools stay, iterthink wraps review and approval around them.

What does iterthink cost?

iterthink is free for personal, non-commercial use. Commercial licenses are one-time payments: 490 CHF for one user, 1'950 CHF for up to 5 users, Enterprise on request. All future updates included. The optional Swiss AI Hosting costs 25 CHF per user per month.

All questions, including target audiences, file formats and compliance

Still think you'd catch it?

Again, two versions of the same sentence. One word is different. Can you find it this time?

Compare them word by word. Tap a version when you're ready.

«The waterproofing must be inspected and approved by the site management the contractor before backfilling.»

Start free

Runs locally. No upload. No account.

Construction • Digitalization • AI • BIM • Governance

The Abstract

One insight. One update. Once a month.

The other perspective that turns your work to your advantage.