ThinkOS
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ThinkOS Public Beta

ThinkOS 0.0.353

This macOS alpha release adds inline HTML artifacts and attachments, easier Sphere navigation, clearer progress and notifications, and more reliable shared conversations and Companion delivery.

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

  • View HTML artifacts directly in conversations, expand them, and save copies to a Sphere.
  • Artifact app data is encrypted and syncs with its Sphere, with recovery guidance and conflict controls.
  • Place attachments inline with your message and remove them by deleting their chips.

Desktop

  • Find and switch Spheres through a searchable sidebar picker, with numbered rail navigation.
  • Read clearer labels and menus, with improved contrast and popovers that stay within the window.
  • Follow the complete active progress trail, including tool work and recorded durations.
  • Manage notifications in a refreshed popover that stays open while scrolling and offers Dismiss all.

Companion Sync

  • Queued prompts and Companion requests recover more reliably while preserving delivery and cancellation outcomes.
  • Companion follow-up instructions stay tied to the intended active turn.
  • Failed manual syncs now report an error instead of leaving you waiting indefinitely.

Reliability

  • Shared Sphere conversations reopen more reliably, and startup navigation waits for account data to be ready.
  • Space drafts stay separate between sessions, with more dependable message delivery status.
  • Agent work scope is visible, and recalled context stays within the authorized Sphere scope.
  • Sphere sharing actions are separate from sync controls, and private Spheres avoid misleading shared labels.

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