Apollo Wearable vs Neurosonic Harmonia (Gen2)

Longevity-stack buyers who already track HRV with Oura, Whoop, or Garmin and want to test a vagal-tone intervention, and who specifically want an open-loop wearable rather than another sensor.

You want a device that measures your physiology, you're looking for FDA-cleared treatment of any condition, or you're skeptical that cutaneous vibration without biofeedback can shift autonomic state.

Buyers who want Neurosonic's vibration programs in the bed they already sleep in, on a mattress or a 10 to 15 cm topper with some give beneath it, and who are fine ordering in euros from Finland with EUR 69.90 shipping and about 2 weeks to delivery.

You sleep on a futon on a hard floor with no padding, which Neurosonic advises against; you want a US warranty in writing before paying EUR 2,790, since the store's warranty terms name Finland; or you or a bed partner are sensitive to noise, since Neurosonic says Harmonia may be slightly more audible than its larger products.

Which is better, the Apollo Wearable or the Neurosonic Harmonia (Gen2)?

We have not scored these two head to head, so this page does not name a winner. The Apollo Wearable starts at $448 and the Neurosonic Harmonia (Gen2) at €2,790. The per-buyer recommendations below say who each one suits.

How much do they cost?

Apollo Wearable: $448. Neurosonic Harmonia (Gen2): €2,790. Prices are verified against the manufacturer; check the live links for current pricing.

Who should buy which one?

Apollo Wearable: Longevity-stack buyers who already track HRV with Oura, Whoop, or Garmin and want to test a vagal-tone intervention, and who specifically want an open-loop wearable rather than another sensor. Neurosonic Harmonia (Gen2): Buyers who want Neurosonic's vibration programs in the bed they already sleep in, on a mattress or a 10 to 15 cm topper with some give beneath it, and who are fine ordering in euros from Finland with EUR 69.90 shipping and about 2 weeks to delivery.