Comparison
Lychnos Ring vs Spark Ring.
Two rings you talk to, built for different moments. Spark Ring is made to catch an idea before it is gone and sort it in an app. Lychnos Ring is being built to answer you on the ring itself.
In short. Choose Spark Ring if you mainly want to catch ideas, notes and reminders by voice and read them later in an app. Choose Lychnos Ring if you want answers and small tasks done on the ring, without your phone; it is in development for Europe.
Side by side
| Lychnos Ring | Spark Ring | |
|---|---|---|
| Status | In development; free list open | On Kickstarter since September 2026; shipping planned for December 2026 |
| Price | Expected €299 | From $159 at the early-bird price |
| Plan | €9.99 a month for the first buyers in the first 12 months; later expected €14.99 to €19.99 | Not stated in our source |
| How you use it | Hold to talk; one press to agree | Double-tap to record |
| What it is for | Answers, reminders and small tasks that ask first | Notes, reminders and drafts in its app |
| Screen and speaker | Yes: a see-through screen and a small speaker | Not stated |
| Without the phone | Yes, own eSIM (design) | No: transcribed on the phone |
Sources, checked 4 November 2026: Spark’s press release. Lychnos Ring’s figures are design targets. Prices and features change; if something here is out of date, write to hello@neaion.com and we will correct it.
The difference in one line
Spark Ring is a notebook you speak into; Lychnos Ring is an assistant that answers. If ideas get lost because your phone is in your pocket, a capture ring solves that simply. If you also want to know what is next, what an email says or whether something is true, without taking out the phone, that is what Lychnos Ring is being built for.
Capture and answers
Lychnos Ring can take a note or a reminder too: hold the button and say it. The difference is what comes back: the first line of an answer on its screen, the rest at your ear, and a buzz you can feel for true, false or not sure. More on how rings differ in what an AI ring is, and every ring we track in AI rings compared.
Questions
Which one works without a phone?
Spark Ring's recordings are transcribed on the phone, in its app. Lychnos Ring is designed to work without the phone after set-up, over its own eSIM; it is in development.
Which one is cheaper?
Spark Ring starts from 159 US dollars at its early-bird price on Kickstarter, with no plan stated in our source. Lychnos Ring is expected at €299 and needs the Lychnos plan, €9.99 a month for the first buyers in the first 12 months.