Document preparation that stays on your computer

Your files, ready sooner. Works unplugged: nothing leaves your computer.

I work in…

Vult1 blacks out personal data, finds the dates and amounts, sums up and translates long documents, and answers with the page it took the answer from. The model is a file on your disk: no cloud, no account, no IT department.

The worry: A copy of the file on someone else’s server. The model is a file on your disk. Nothing is uploaded, to us or to anyone.

15-day trial, every featureNo card, no accountWorks without internetMac (Apple silicon) or Windows 11, 16 GB

Formal notice.pdfpage 1 of 1 · sample, fictional

Meridian SA

Property management · Brussels, 16 October 2026

To: Mrs Claire Dupont, born on 14 February 1978, 48 avenue des Acacias, 1050 Brussels

The rents for July, August and September 2026 remain unpaid. The amount due is €5,550.00.

We give you formal notice to pay this sum within fifteen days of receipt of this letter to account BE71 0961 2345 6769.

Failing payment, we will ask the court to terminate the lease.

Yours faithfully, J. Mertens, Meridian SA

Personal data · page 1

4 found: 3 blacked out, 1 for you to decide

Address: keep it for the court, or black it out?

To confirm · deadline to pay Monday 2 November 2026

15 days from receipt on Fri 16 Oct 2026 · 31 Oct is a Saturday, 1 Nov a public holiday, next working day applies

How much is claimed, and by when?

€5,550.00, the rents for July to September 2026 2, payable within fifteen days of receipt 3.

Written on this computer by Gemma 4, from page 1. Check the cited page.

Working offline, on this computerSent outside this computer today: 0 bytes

  • Sent outside this computer today: 0 bytes, shown in the app’s status line
  • 4 network channels, each with a switch
  • 1 answer in 8 was wrong in our 40-question test
  • Full results →

Start with your own question.

Seven kinds of office use Vult1. Each came with a first question. Pick yours.

Not sure which page is yours? All use cases, including real estate, insurance, HR, NGOs and public bodies.

Runs on your computerThe model is a file on your disk. Nothing is uploaded, to us or to anyone.
Works with the cable outAfter the first start, every feature works without internet.
No accountThe trial asks for an e-mail address, nothing else. A licence is a key, not a login.
Cites the pageEvery answer names the passage it came from, or says “not in the file”.

Sent outside this computer today: 0 bytes. The status line at the foot of every Vult1 window.

The file never leaves the desk.

Cloud AI chat is handy. It is also a copy of your client’s file on someone else’s server. Nobody knows how long it is kept, or who can read it. So the work is done by hand, or the risk is taken.

Vult1 does the same jobs on the computer in front of you. The model is a file on your disk. Unplug the cable and it still works. Every answer shows the page it came from, and you check it before it leaves your hands.

No account to create, no IT department to call. Install, open a file, done.

See exactly what leaves your computer

One tool for the jobs that eat your afternoons.

Every feature comes with the limit we measured, in the same type size. We publish the test results, including the weak spots, on the evaluation page.

Read the evaluation results →

Black out personal data

Names, addresses, e-mails, phone numbers, bank accounts and birth dates are found and shown to you one by one. You decide, the app writes a new PDF and reads it again to prove the text is gone.

Limit: Tested on 5 short documents. Review the result before sharing.

Find the deadlines

The trigger date and the rule are taken from the letter; the date is computed by code with the holiday tables of DE, FR, BE, NL and LU. The working is shown. You confirm.

Limit: The rule tables are not yet reviewed by a lawyer. Verify every date.

Ask, and get the page

Ask in French, Dutch, German or English. The answer cites the passage and page, checks its own figures against it, and says when the file does not contain the answer.

Limit: About 1 answer in 8 was wrong in our 40-question test. Open the cited page.

Sum up and translate

Long documents become a summary in the document’s language, or a translation between French, Dutch, German and English. Figures missing from the original are flagged.

Limit: Summaries leave out exact figures. Use cited answers for specifics.

Build the records sheet

A table of every document, with date, type, parties and pages, and a dated chronology of the matter, exported to Word or Excel.

Limit: No accuracy figure yet; built and used on our own test files.

Look up the statute

French, Luxembourg and Dutch statutes are searched offline by article number or by meaning, with the official citation and “as of” date.

Limit: German statutes: not yet. No case law.

All features and measured limits

The pull-the-plug moment

Pull the plug. It keeps working.

The model is a file on your disk, like a dictionary. After the first start, every feature works with the network cable out. Four small channels remain, each visible and switchable in Settings: licence, model files, statute packs, updates.

Checked by you, not claimed by us: Settings › Network shows every channel and its last contact.

What runs where

A plug pulled out of its socket: the status line reads working offline Internet: offSettings › Network: 4 channels

Working offline, on this computerNothing was sent. Nothing needs to be.

Proof by demonstration

Try it on a sample letter before you install anything.

Three jobs on a fictional formal notice: black out personal data, find the deadline, ask with citations. The results are scripted for the sample; nothing is sent anywhere. The real app does the same on your own files.

Open the demo

What we tell you up front

  • An answer can be wrong. In our test on 40 questions, about 1 answer in 8 was wrong and 1 citation in 8 did not support its answer. Always open the cited page.
  • The deadline rules follow the statutes and are shown step by step, but have not yet been reviewed by a lawyer. Verify every date.
  • Speed on Windows laptops without a graphics chip has not been measured yet. Handwriting is not supported.

No testimonials, no logos, no star ratings yet. The beta is young. What we publish instead: the measurements on named test sets, the full network list, the changelog, and a pilot programme in which firms test Vult1 on their own files and score it on their own machines.

Evaluation resultsChangelogPilot programme

Three steps. The third one is unplugging.

Nothing to configure, nothing to host. The first start needs internet once, for the model files and the trial key.

  1. Install

    Download for Mac or Windows and open the file. About two minutes.

    Day 0 · online

  2. The model downloads once

    About 9 GB of model files, checked after download, kept on your disk. Then start the 15-day trial with an e-mail address: the clock starts then, not before.

    Day 0 · online, once

  3. Work. Pull the plug if you like.

    Drop a folder of documents. Black out, ask, find the dates, sum up. Every feature works offline.

    Day 1 onwards · offline

How it works, in detail

Pricing

One price list, no metering.

Prices are net of VAT and billed yearly. No quotas, no per-document fees. The 15-day trial has every feature and needs no card.

See pricing

Lawyer seat

€69per month

Billed yearly (€828). Month to month: €89.

Firm, 5 seats or more

€59per seat, per month

Billed yearly. The same seat at the firm rate.

Staff seat

€29per month

Billed yearly, with at least one lawyer seat. Prepares files, no cited answers.

Tell me when buying opens

Buying opens when the terms of sale are published. Leave your e-mail and we write once, on that day.

We first send a confirmation e-mail; nothing else is sent until you press its link (double opt-in). Your address is used only for this and stored on our server in Paris (Scaleway). Unconfirmed addresses are deleted after 14 days; confirmed ones when you unsubscribe, or 24 months after our last message. Privacy policy

Install, open a file, done.

No card, no account. The trial lasts 15 days and has every feature.

macOS 14 or later on Apple silicon · Windows 11, 64-bit16 GB of memory for every feature

The 15 days start when you press Start in the app, not when you download.

Cannot install software on your office computer? Read the security sheet with your IT.

Beta · installers not signed yet · Changelog