Quick verdict
Sandbar was founded by former CTRL-Labs/Meta interface designers Mina Fahmi and Kirak Hong, and Stream is their answer to a familiar failure: ideas that vanish before you can unlock a phone. The ring launched for preorder in the US, with shipping originally slated for summer 2026, in sizes 5 to 13. This review is based on launch coverage and Sandbar’s published details.
How Stream works
Wear it on the index finger of your dominant hand. The microphone stays off until you press and hold the capacitive touchpad — it is built to pick up even a whisper in a crowd — and a gentle vibration confirms the note was saved. Notes sync over Bluetooth to the companion app (iOS first), where AI transcribes them, groups related ideas and can expand snippets into lists, reminders or messages. The same touch surface doubles as a media controller for play, pause, skip and volume.
The Inner Voice, and the subscription
The app’s most distinctive feature is Inner Voice: an AI assistant that speaks back in a voice modeled partly on your own vocal characteristics, if you want that — generic voices are available. A free tier covers note-taking with limits; Stream Pro ($10/month, with three months included with preorder) unlocks unlimited notes and chats plus early features. Sandbar says audio is not stored on the ring, data is encrypted, and notes can be exported, including to Notion.
Pros and cons
- Pros: press-to-record privacy model — the mic is off until you hold it; whisper-level capture suits public places; genuinely fast idea capture versus a phone; media controls on the same gesture surface; export options keep your notes portable.
- Cons: the best AI features sit behind a $10/month subscription; iOS-first, with Android support later; Sandbar has not published battery-life specs, a real unknown for a ring you are meant to use dozens of times a day; a young startup’s hardware carries longevity risk; it tracks no health metrics, so it replaces nothing you already wear.
Who is it for?
Writers, founders, students and anyone whose best ideas arrive on walks and in hallways — people who think out loud and lose thoughts to friction. If you want health tracking, notifications or a camera-free assistant with broad phone skills, a watch or glasses will serve you better.
Frequently asked questions
How much does the Stream Ring cost?
$249 in silver and $299 in gold, with three months of Stream Pro included; Pro is $10/month after that for early customers.
Does it record all the time?
No. The microphone only activates while you press and hold the touchpad.
Does Stream work with Android?
It launched iOS-first; Android support was planned rather than available at launch.
Price and availability
Stream is sold direct by Sandbar on preorder at $249 (silver) / $299 (gold). It is not sold on Amazon, so there is no Amazon link — preorder direct if the idea-capture pitch fits you.