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Private document research. Mac app in development

AI research
with integrity.

Ask questions across your PDFs and text files. Follow citations back to the source and check the answer yourself. Analysis runs on your Mac.

Interactive demo with preset answers

Two public documents, 526 pages

Preset questions

The 737 MAX investigation

This project

The 737 MAX investigation

2 documents

What did the aviation regulator approve?

The FAA, the US aviation regulator, approved removing references to the MCAS flight-control system from Boeing’s pilot operating manual. This passage concerns the manual; it does not establish approval of the system’s redesign.

Preset check result: no unsupported claims flagged.

Cited sources1

Final Committee Report

Relationships in these sources
Relationships1
  • FAA —approved→ Removing MCAS from the pilot manual

Preset check result: no unsupported claims flagged.

2 public documents, no live AI

Demo with preset answers, relationships, and check results. Quotes and page references were checked against the original PDFs. No live AI runs here. Read the original report ↗

  • Funded by

    MIZ Babelsberg
  • A product of

    Representing Artists
  • Engineering

    Coding Friends

From question to evidence

Ask, then check what came back.

Read your documents, explore connections, and check answers against their sources.

Find an answer across your files.

Ask a question across a whole project, not one file at a time.

Interactive demo with preset answers

When did the FAA learn that MCAS could operate at low speed?

These passages do not establish a single date when the FAA learned of the change. Boeing told the Committee it had shared the expanded operating range with regulators on numerous occasions. The Committee’s own account is narrower: the new operating range appeared in certain communications with the FAA, but MCAS was not an area of particular emphasis.

The report separately states that the FAA officials who authorised removing MCAS from the flight manual remained unaware of the redesign until after the Lion Air crash.

At the October 2019 hearing, Boeing’s chief executive placed the manual decision in parallel with the extension of MCAS to low-speed operation, not after it.

Preset check result: no unsupported claims flagged.

Keep each investigation in its own project

Group PDFs with selectable text and plain text files into projects. Image-only scans need OCR before import.

Question the whole library at once

Ask about one document, a project, or your whole library. The search pulls the passages that match, not every page.

Full-text search in the original PDF

Search the original PDF for a specific term, or start from the overview and its key quotes.

Private by design

Your research stays on your Mac.

Your files, the search index, and the AI models stay together on your device.

  • No upload for document analysis
  • No account required in the Mac app
  • No model training on your documents

Research works offline once the required models are installed. Downloading the app or additional models requires an internet connection.

Built for careful work

For the work behind the conclusion.

When the details matter, keep the question, the answer, and the evidence together.

Journalism

Compare the accounts.

Ask about reports and testimony. See where the accounts diverge, and on which page.

Reports, transcripts, and public records

Legal work

Reconstruct the sequence.

Work through case files to see who did what, and when. Client documents stay on your own machine.

Case files, correspondence, and contracts

Research

Check before you cite.

Explore studies and interviews. Return to the supporting passage before including a claim in your own work.

Papers, studies, and interview transcripts

Everything else

Whenever the detail decides.

Any work with confidential documents where you have to stand behind what you conclude. Due diligence, compliance, archives, your own notes.

Your documents, whatever they are

What you can rely on

The answer is generated. The evidence is not.

A language model writes the answer, and it can be wrong. Every citation opens the stored passage, page, and source it points to. So you can check the basis yourself.

Who built it

Built in Berlin.

A small team building tools for careful research.

Meet the team →

  • Frederic von Vlahovits

    Frederic von Vlahovits

    Product

  • Julius Peinelt

    Julius Peinelt

    Engineering

Early access for macOS

Bring your next question.

Leave your email and we’ll write when early access opens, plus occasional product updates.

Requires a Mac with Apple silicon and macOS 26 or later. The local models need several GB of disk space.

Have a question? team@synpose.com