Mouthpiece comparison
VitalSleep vs Zyppah: One Bet, or Room to Adjust
Zyppah is built around a single idea, and it commits to it completely. VitalSleep is built to be tuned. Which one is right depends entirely on why you snore.
The short version
Zyppah holds your tongue. VitalSleep moves your jaw further. Zyppah adds an elastic strap across the tray that keeps the tongue forward. VitalSleep has no strap, and instead advances the lower jaw up to 8 mm.
Zyppah does not adjust. VitalSleep does. Once you mold a Zyppah, the jaw position is fixed. VitalSleep moves in 1 mm steps with a hex wrench.
Zyppah gives you longer to decide. They advertise 91 days against our 60 nights. That one goes to them.
Side by side
| VitalSleep | Zyppah | |
|---|---|---|
| How it works | Jaw advancement | Jaw advancement plus a tongue strap |
| Fit | Boil-and-bite, molds to your teeth | Boil-and-bite, molds to your teeth |
| Jaw adjustment | 1 mm steps, up to 8 mm | None after molding |
| Sizes | Two tray sizes, larger and smaller | One |
| Stated lifespan | About a year with regular use | Roughly 9 to 12 months |
| Trial | 60 nights, full refund | 91 days advertised, RMA required, return shipping at your expense |
| Warranty | One year, replacement for any reason | One-time replacement within 90 days per their terms |
| Where made | Made in the USA | Company states made in the USA |
Zyppah details compiled from zyppah.com, reviewed 24 August 2026. Terms change. Confirm current details on their site before buying.
The tongue strap is the whole argument
Zyppah's case is that jaw advancement alone misses the real blockage for a lot of snorers. Their device is a mandibular mouthpiece with a soft elastic band running across it that holds the tongue forward, which the company describes as working like a seatbelt.
We are not going to argue with the premise. Tongue-based snoring and jaw-based snoring are different problems, and most mouthpieces on the market, ours included, only address the second one. If your tongue is what falls back and blocks the airway, a device that restrains it is doing something ours does not do.
The question is what Zyppah gives up to do it.
What the strap costs you
There is no adjustment. Zyppah has no mechanism to change jaw position after the mold. Whatever advancement you set during boil-and-bite is what you sleep with for the life of the device. If it turns out too aggressive, your options are a remold or a return, not a turn of a wrench.
That matters because jaw advancement is the part of any mouthpiece that decides both whether it works and whether it hurts. Too little and you still snore. Too much and you wake up sore and quit in week two. Being able to creep up on the right position, and back off if you overshoot, is the difference between adapting to a mouthpiece and abandoning it.
There is one size. Zyppah's tray is built to fit most adult mouths. Molding shapes the impression, but it does not change the footprint. VitalSleep comes in two tray sizes, and if the first is wrong the exchange is free.
And the strap is not for everyone. If you have a sensitive gag reflex, an elastic band sitting across your tongue is a considerably harder ask than a plain tray.
About the 91% figure
Zyppah advertises a clinically proven 91% success rate. The study behind that number enrolled self-reported snorers who used the device for 10 days and filled out a questionnaire before and after. It measured what participants said about their own snoring over a short window. It was not a controlled trial with objective sound measurement, and 91% is not a cure rate.
We are a competitor, so weigh that as you like. The study is public and you can read it. We break it down in detail in our full Zyppah write-up.
Where Zyppah is the better buy
We sell one of these, so take the following for what it is. There are real cases where Zyppah is the right call, and we would rather say so than have you find out after you buy.
Your snoring is tongue-driven. If a plain mandibular device has failed you before, or a sleep study or dentist has pointed at your tongue, the strap addresses something we do not.
You want longer to decide. 91 days beats our 60 nights, and on a device that takes a couple of weeks to adapt to, extra runway is worth something.
You already know your advancement. If you have used a mandibular device before and know exactly where your jaw needs to sit, adjustability is a feature you will not reach for.
Which one fits which snorer
Zyppah makes more sense if
- You have reason to think your tongue is the blockage, not your jaw
- You do not have a sensitive gag reflex
- You want the longest possible window to decide
- You have used a mouthpiece before and know your setting
VitalSleep makes more sense if
- This is your first mouthpiece and you do not know your setting yet
- You have a smaller jaw and standard trays have felt too big
- You want to raise the advancement gradually and back it off if a night goes badly
- You want a full year of replacement coverage, not a 90-day one-time swap
Common questions
Can you adjust a Zyppah after molding it?
No. Zyppah has no adjustment mechanism, so the jaw position is set by the mold. Their terms cover a free replacement if the device was molded improperly. VitalSleep adjusts in 1 mm steps up to 8 mm at any point.
Does VitalSleep have a tongue strap?
No. VitalSleep works by advancing the lower jaw. If your snoring is specifically tongue-driven, a device that restrains the tongue is addressing something we do not.
Which one has the longer guarantee?
Zyppah, on the return window. They advertise 91 days against our 60 nights, though a Return Merchandise Authorization is required and return shipping is at your expense. VitalSleep is longer on warranty coverage: a full year of replacement against their 90-day one-time replacement.
Do either of these treat sleep apnea?
We can only speak to our own product. VitalSleep is FDA-cleared for snoring reduction and is not a treatment for sleep apnea. If you stop breathing in your sleep, wake up gasping, or feel exhausted no matter how long you sleep, see a doctor before buying any mouthpiece.
What about dentures, implants or crowns?
Any mandibular advancement device relies on your own teeth to hold position and to grip during molding. Check with your dentist first if you have dentures, partials, implants, crowns, or loose teeth.
How we checked this
Every statement above about Zyppah comes from Zyppah's own published pages, reviewed on 24 August 2026: their product pages, guarantee and returns terms, warranty terms and FAQ at zyppah.com. Note that Zyppah's marketing advertises a 91-day guarantee while their terms page states 90 days.
We have not independently tested Zyppah. Model names, pricing, guarantee terms and product specifications change without notice, and Zyppah did not review this page. Verify current details on their site before purchasing.
Zyppah is a trademark of Zyppah, Inc. and is not affiliated with, and does not endorse, The Snore Reliever Company, LLC or VitalSleep. Statements attributed to Zyppah reflect their published claims and are not adopted as our own.
Nothing here is medical advice. Individual results vary. Last reviewed: 24 August 2026. If you believe anything on this page is inaccurate, contact us and we will review and correct it promptly.
Snoring has a cause. VitalSleep works on it.
The VitalSleep adjustable anti-snoring mouthpiece gently moves the lower jaw forward to open the airway. FDA-cleared. Made in the USA. Over 600,000 adults since 2011.
Transform Your Sleep60 nights to decide. Free replacements for 1 year.
