Nearly impossible to get in contact with anyone. Even my doctor's office can't reach anyone on their team for support after repeated attempts. It's been like this for almost a year and I'm just fed up with the lack of support from them to get replacement mouthpieces and a new device to replace my broken one.

Won't honor money-back guarantee. I received my eXciteOSA device in early June and commenced my therapy as directed. The device came with a money-back guarantee if the therapy did not improve my OSA. My follow-up sleep study showed no improvement, thus I reached out to Signifier in Sept to return my device and receive refund. Signifier never answers their phone nor returns any voicemail. Weeks to get any email response. Signifier finally provided me with a mailing label to return in Dec and I received the package back "rejected, return to sender." As far as I'm concerned, at this point, Signifier is running a scam.

Technically flawed. the device does not give any significant improvement. worse still the performance is erratic. the device shuts down unexpectedly in the middle of a session and cannot restart from where it left off. It fails to record so the treatment is not recorded properly. I have brought it to the attention of the company but have received no action. I have done everything they asked me to to do. All they do is send a canned reply that it has been escalated to a team. Stay away.

It worked for me, but the device quit working before the warranty was up and they never sent me a new one. They don't honor their warranty.

Three key problems: 1) the device didn’t have any affect on my snoring. Others may have a different experience. 2) the device requires a new mouthpiece at regular intervals. Despite paying a monthly direct debit, this never appeared, leaving me £200 down (plus the device itself), with a device that was basically useless. 3) trying to cancel the direct debit seems next to impossible. Six months after I cancelled the payment, the company have taken a further payment from my account, despite no DD being in place, suggesting they aren’t controlling access to my payment details correctly. Unless you’re desperate, I would avoid.

This company have taken over a hundred pounds over the last 6 months, under a subscription I set up with them to supply mouthpieces for their product. However they have not been able to supply what should now have been two mouthpieces. I've had no contact whatsoever to explain why. I contacted their support to ask them to refund me seen as they're unable to supply the goods, only to be told to cancel my subscription (which I'd already done) and that my query had been passed to their finance team. I'm not quite sure what it is that I'm querying by reasonably expecting a refund. An apology would have been appropriate for them effectively stealing my money. Seems likely that I will have to raise a dispute via my bank to get my money back. All in all, a rather shockingly bad experience.

It seemed like it was reducing my snoring a little bit, but the mouthpiece automatically deactivates after 90 days. After spending about $1000 for the device it’s annoying that you have to buy a new $150 mouthpiece every three months. If you can get one. I ordered mine a month ago, haven’t received it, and can’t even get a reply to questions about it.

I ordered a replacement mouthpiece 5/3/2024. Today is August 28th & I have yet to receive the mouthpiece. For months I've been told they expect to receive stock in 2-3 weeks. I kept my order in place when advised they would "extend" my mouthpiece. Fine, this worked a few times but now it won't connect at all. The only reason I gave 2 stars instead of 1 is because I believe the device works. Unfortunately without a functioning mouthpiece it's useless. I'm wondering if Signifier is being transparent about the reason for the backorder. I read that last June they received their largest commercial order ever, 10,000 units from a company called Spectrum Sleep Solutions. So current users are put on the backburner??? A little suspicious...

I was happy with this product until I ordered the replacement mouthpiece. After four months of waiting I contacted the company for a reimbursement, which I did receive. It’s very disappointing that I had this product for less than a year and now can’t get the mouthpiece replaced that they said I needed to replace. This was a very expensive item that I was hoping to use for the rest of my life. After reading some other reviews, I realized that I wasn’t alone in my frustrations with this company. Don’t spend your money here. This company is not reliable or honest!

According to my partner my snoring is less and softer. My sleep score on my Fitbit hasn't changed much as my snoring didn't really affect me much. I'll continue using it. What really bugs me is the control the company has over the mouthpiece. I often use it just before a midnight bedtime, so my session runs past midnight. This stops me from using it that evening. Also, if I clean the mouthpiece properly and gently there isn't any need to replace it after 90 days. It's a money spinner for the company. They are switching them off at 90 days to force sales, rather than based on actual need. I know this because I was unable to use my device for 6 weeks out of the initial 3 months and it indicated that it was about to be switched off. The company did extend it, but I think that this level of control discredits the company.