PureSleep vs SnoreRx
Mouthpiece Comparison
Both are FDA-cleared mandibular advancement devices. Both are molded at home. The real difference is how much control you get over the fit.
The short answer
PureSleep uses a set-it-once approach. You pick one of three bite-type configurations during assembly, and that is the position you sleep in from then on.
SnoreRx is adjustable. It advances the lower jaw in 1mm increments up to 6mm, so you can change the setting after fitting.
VitalSleep is also adjustable, using the patented Accu-Adjust System and a hex key, and it comes in two sizes with a 60-night money-back guarantee and free replacements for a year.
The devices
One is set at assembly. The other is built around an adjustment mechanism.
PureSleep
SnoreRx
The key difference: adjustability
Jaw advancement is what reduces snoring. How much you need is personal, and you rarely get it right on the first night.
PureSleep
Set it and forget it
Before molding you choose one of three configurations, for a standard bite, an overbite or an underbite. Once assembled and molded, that choice is fixed for the life of the device. If it turns out to be too little advancement to help, or too much to be comfortable, your options are limited.
SnoreRx
Dial it in over time
Advances in 1mm increments up to 6mm, so you can start conservatively and increase only as needed. You can change the setting later without starting over.
Why this matters: too little jaw advancement and the device does not do enough. Too much and you get unnecessary jaw soreness with no added benefit. An adjustable device lets you find the smallest setting that works for you, which is exactly why VitalSleep is built around the Accu-Adjust System.
Side by side
Compiled from each brand's own published pages, reviewed 24 August 2026. Terms change, so check each brand's site for current details before you buy.
| Feature | PureSleep | SnoreRx | VitalSleep |
|---|---|---|---|
| How it works | Mandibular advancement | Mandibular advancement | Mandibular advancement |
| FDA cleared | Yes | Yes | Yes |
| Fitting | Boil and bite | Boil and bite | Boil and bite, molds to your teeth |
| Adjustable after fitting | No, the configuration is fixed | Yes, 1mm increments up to 6mm | Yes, 1mm increments up to 8mm |
| Sizes | One size | One size | Two tray sizes |
| Prescription needed | No | No | No |
| Guarantee | 60 days, prepaid return label included | 30 nights from delivery, direct purchases only | 60-night money-back guarantee |
| Replacements | No warranty stated | No warranty stated | Free replacements for 1 year |
| Made in | Company states USA | Company states California | USA |
All three use boil and bite
The at-home fitting process is essentially the same. It takes a few minutes.
Which one fits you?
Consider PureSleep if
- You want the simplest possible setup
- You have an overbite or underbite and want a configuration for it
- You do not expect to need fine adjustments
Consider SnoreRx if
- You want to fine-tune jaw position over time
- You would rather start small and increase gradually
- A one-size device works for your mouth
Consider VitalSleep if
- You want adjustability plus a size made for your mouth
- You want a free size exchange if the first one is not right
- You want a 60-night guarantee and a year of free replacements
Adjustable. Two Sizes. Guaranteed.
VitalSleep has helped over 600,000 snorers get quieter nights. Mold it to your teeth, dial in the jaw position that feels right, and sleep on it for 60 nights. If it is not for you, we refund you.
Shop VitalSleepFDA Cleared · Made in the USA · 60-Night Money-Back Guarantee · Free Replacements for 1 Year
This page is published by The Snore Reliever Company, LLC, the maker of VitalSleep. One of the three devices compared here is ours, so this is not an independent review. PureSleep and SnoreRx are trademarks of their respective owners and are not affiliated with VitalSleep. Details about their products come from their own published pages, reviewed 24 August 2026, and may change, so confirm current specifications with each brand before purchasing. This page is for general comparison only and is not medical advice. VitalSleep is FDA cleared to reduce snoring. It is not intended to diagnose, treat, cure, or prevent sleep apnea or any other medical condition. Talk to a healthcare professional before using an oral device if you have sleep apnea, jaw pain or TMD, loose teeth, or dental work.
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.
