Security & privacy

Your drawingsnever leaveyour computer.

ScaleSet PDF opens, marks up and saves drawings on your own machine. What goes online is the licence check and the update check, and neither carries anything about your work.

G-410
The drawing never leaves the machine; the licence check carries four facts
SHEET G-410.1
In detail

Private by
construction.

01 · Local

Nothing about your work is sent

Not the drawing, not its file name, not a markup, a comment or a measurement. Shared reviews run through a folder your team already shares. If you connect your own AI assistant, it talks to the app on your computer under your own plan.

G-410.1
NEVER SENT
  1. 01Drawings and their file names
  2. 02Markups, comments and replies
  3. 03Measurements and takeoff
  4. 04Where your files are kept
  5. 05How you use the app
02 · Licence

A signed lease, good for three days

The app checks in while it is open and online. The answer is a lease signed with Ed25519 that names the account and the computer; a lease copied to another computer does not run there, and a clock wound back to stretch one is noticed.

  • SentSession, computer identifier and name, version
  • ReturnedA signed lease, three days at most
  • OfflineRuns on the lease it has
G-410.2
THE LEASE
  1. 01Signed by ScaleSet with Ed25519
  2. 02Names the team and the person
  3. 03Names the computer it runs on
  4. 04Never past the team's licence date
  5. 05Three days at most between check-ins
03 · Drawings

Protected drawings stay protected

A drawing with a password asks for it and keeps it for the session only. Everything written from a protected drawing - a save, an export, extracted pages, the parts of a split - is sealed again with its own security. Protect writes AES-256, which every current reader opens.

G-410.3
PROTECTION
  1. 01Opens RC4 40 to 128-bit, AES-128 and AES-256
  2. 02Writes AES-256 (R6)
  3. 03Permissions honoured, unlocked per session
  4. 04Signatures with Digital IDs, validated
  5. 05Redaction that removes, with metadata clean-up
SHEET G-410.4
Questions

About privacy.

Are my drawings uploaded?

No. ScaleSet PDF is a desktop app; drawings are opened and saved on your computer. Shared reviews happen through a folder your team already shares.

What does the licence check send?

Your session, which computer is asking (an identifier derived one-way from Windows' machine ID, never the ID itself), its name and the app's version. The answer is a signed lease.

Does the app collect analytics or telemetry?

No.

Where is account data stored?

Team and seat records are kept in Google Cloud in Sydney. Sign-in accounts are held by Firebase Authentication.

SHEET G-501
Get ScaleSet PDF

Put the set
under control.

ScaleSet PDF is free to read. The markup, takeoff and editing tools are licensed to teams, a seat per person - download it now, and tell us how many seats you need.