ThinkOS
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ThinkOS Public Beta

ThinkOS 0.0.220

This macOS alpha release brings richer Spaces conversations, an integrated browser, more AI choices, and improvements to chat controls, syncing, and desktop responsiveness.

Download for macOS — Apple silicon

Downloads

iPhone and iPad through TestFlight

  • ThinkOS has completed Apple's TestFlight review and is approved for public testing. We're distributing the iOS app through TestFlight for now because we're making rapid changes and want to deliver fixes and improvements quickly before the full App Store release.
  • Install Apple's free TestFlight app on your iPhone or iPad if you do not already have it, then open the ThinkOS public TestFlight link on that device and tap Accept or Install.
  • New ThinkOS builds appear in TestFlight as they are released. You can update manually or enable automatic updates in TestFlight. Expect frequent changes, occasional rough edges, and features that may move while the early release develops.
  • TestFlight builds are available for up to 90 days. We plan to keep a current build available, but if a build expires, return to TestFlight for the newest one.
  • Feedback is part of this early release: send notes from TestFlight, including screenshot feedback when useful, so we can reproduce issues and improve the next build.

Highlights

  • Collaborate in Spaces with invitations, replies, reactions, conversation search, and synced read status.
  • Browse beside your conversation with multiple tabs, a pop-out window, and page annotations you can send to an agent.
  • Use automatic model selection, choose Claude Opus 5.5, or explore Ollama and Apple Intelligence during setup.

Desktop

  • Queue follow-up messages or steer an active chat turn, with clearer live tool activity.
  • Dictate prompts with recording controls and improved microphone permission handling.
  • Create local Spheres from the New menu and rename agents directly from their profiles.
  • Keep your open conversation and reading position when other threads update.

Companion Sync

  • Pair devices with persistent manual codes and clearer connection status.
  • Receive paired conversation messages more reliably, with reduced delivery delays.

Reliability

  • Recover more reliably from interrupted Space sync and invitations while preserving local edits and conflict drafts.
  • Keep ThinkOS more responsive during startup and Slack history catch-up.
  • Restore saved task models after restart and require explicit confirmation before removing a Sphere.

Updating