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Blask

Privacy & connectivity

Blask is built to keep your work on your machine:

  • The two app halves talk only over localhost (a WebSocket on port 8765). This traffic never leaves your computer and is not reachable from the network.
  • No artwork, brush data, or color data is ever transmitted. Nothing you paint leaves your computer.

When Blask goes online

Section titled “When Blask goes online”
  • Activation (once, in the installer). Sent: your license key, a one-way hashed machine identifier (so the license can be bound to this PC), your computer’s name (shown in Settings → License so you can tell your two seats apart), and the app version. Starting the free trial sends the same, minus the key.
  • License re-check at startup. Sent: the license key and the hashed machine identifier, nothing else. If you’re offline, Blask keeps running from a cached license for up to 14 days; after that it needs one successful check.
  • Update check (per the frequency you choose in Settings → Updates; default weekly, can be turned off). Blask fetches the latest published version number, the request carries no personal data at all.