ThinkOS
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ThinkOS Public Beta

ThinkOS 0.0.354

This macOS alpha release adds inline HTML artifacts, easier Sphere navigation, clearer attachments and progress, 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.
  • Keep artifact app data encrypted and synced with its Sphere, with updates appearing immediately on desktop.
  • Find Spheres with a searchable sidebar switcher and a pinned Create Sphere action.

Desktop

  • Place attachments inline with your message and remove them by deleting their chips.
  • Read clearer labels and attachment types, with improved contrast and consistent composer menus.
  • See the full active progress trail, observed tool work, and recorded durations.
  • Manage Sphere settings inline and browse notifications in a clearer popover that stays open while scrolling.

Companion Sync

  • Queued prompts and Companion deliveries recover more reliably after interruptions.
  • Delivery failures remain visible, and removing queued messages requires confirmation.
  • Shared Sphere navigation and conversations recover more reliably during startup and sync.

Reliability

  • Conversation drafts stay separate across sessions, and older synced state no longer replaces newer changes.
  • Agent work scope is visible, with recall restricted to authorized sources.
  • Popovers stay within the window, and shared conversations open more consistently from the sidebar.

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