ThinkOS
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ThinkOS Public Beta

ThinkOS 0.0.355

This macOS alpha release adds inline HTML artifacts, searchable Sphere switching, and inline attachments, with clearer desktop controls 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, syncs with its Sphere, and updates immediately on desktop.
  • Find Spheres in a searchable sidebar switcher with a pinned Create Sphere action.
  • Place attachments inline with your message text; deleting an attachment token removes its attachment.

Desktop

  • Read clearer labels and attachment types, with improved contrast and more consistent composer menus.
  • Keep menus within the window and scroll notifications without closing the popover.
  • Open Feedback without leaving your current workspace and adjust Sphere settings inline.
  • Follow the complete active progress trail, with clearer tool activity and recorded durations.

Companion Sync

  • Queued Companion messages and active-turn follow-ups retain their intended conversation through recovery.
  • Delivery failures and cancellations remain visible, and failed manual sync reports an error.
  • Sphere sharing actions are separate from sync controls, with clearer shared Sphere indicators.

Reliability

  • Shared conversations reopen more reliably, while drafts stay with their own session.
  • Startup navigation waits for account data, and older snapshots no longer replace newer state.
  • Agent work scope is visible, and recalled context stays within the authorized scope.
  • Slack and Telegram connection recovery is more resilient.

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