There is a large market of anti-snoring devices and a much smaller set of mechanisms. Sorting them by what they physically do is the fastest way to work out which apply to you, because snoring has several different causes and each device only addresses one.
1. Mandibular advancement devices — the strongest evidence
What they do: hold the lower jaw slightly forward, which pulls the tongue base away from the back of the throat and enlarges the airway at the point where snoring is generated.
Evidence: the best of any device in this list. Consistently effective for simple snoring, and effective enough for mild to moderate sleep apnea that they are a recognised alternative for people who cannot tolerate CPAP.
Downsides: jaw and tooth discomfort for the first few weeks, excess salivation, and occasionally lasting changes to bite alignment. Custom-fitted devices from a dentist substantially outperform boil-and-bite versions and cost considerably more.
Worth it if: your snoring is moderate to severe and position and alcohol changes have not been enough.
2. Positional devices — cheap and effective for the right person
What they do: stop you sleeping on your back, where gravity pulls the tongue and soft palate toward the throat wall.
Evidence: good, for people whose snoring is genuinely position-dependent — which is a large share. Vibrating positional trainers, wedge pillows, and the tennis-ball-in-the-shirt trick all work by the same logic.
Worth it if: your partner reports the snoring is much worse on your back. Test it for free before buying anything.
3. Nasal strips and dilators — for one specific restriction
What they do: open the nasal valve, the narrow soft section about a centimetre inside the nostril that draws inward on inhalation.
Evidence: reliably reduce nasal resistance. Effect on snoring depends entirely on whether nasal restriction is your problem — helpful when it is, useless when it is not. They do not treat apnea.
Worth it if: you can feel the difference within seconds of applying one, awake. That immediate test tells you everything. TitanAir strips use spring-loaded bands, since the lift is the mechanism — a flat adhesive strip is a different product. (The ten-second test for whether this is you.)
4. Mouth tape — for mouth breathers specifically
What it does: keeps the lips closed so the jaw does not rotate back and the tongue does not follow it toward the throat.
Evidence: modest but real for snoring in people who mouth-breathe, and stronger for the associated symptoms — dry mouth, sore throat, unrefreshing sleep. It is not a treatment for apnea and should not be used if apnea is suspected. (Why not.)
Worth it if: you wake with a dry mouth and can breathe comfortably through your nose. Titan's bamboo silk tape is a full strip rather than vented, deliberately, because a vent lets you keep mouth breathing without noticing. (Titan Recovery publishes both reports.)
5. Chin straps — poor evidence
What they do: hold the jaw closed from underneath.
Evidence: weak. Studies find little effect on snoring or apnea, and there is a mechanical reason: holding the jaw shut without moving it forward can push the tongue base further back, which is the wrong direction.
Worth it if: rarely, on its own. The main legitimate use is with nasal-mask CPAP where mouth leak is losing pressure — a clinician's call.
6. Sprays, pillows and wearables — mostly not
Throat sprays claiming to lubricate or tighten tissue: no meaningful evidence. Effects last minutes, not hours.
Anti-snore pillows are positional devices in a more expensive form. Some help by encouraging side sleeping; none do anything a wedge and a firm pillow do not.
Wearables that vibrate when you snore are trackers, not treatments. Useful for measuring whether an intervention worked.
The question underneath all of this
Before buying anything: is it simple snoring or is it apnea?
Get assessed if there are witnessed breathing pauses, gasping awake, snoring audible through a closed door, exhaustion regardless of hours, unintentional daytime sleep, or morning headaches. Quieting the noise while the airway still collapses is the outcome to avoid. (How to decide.)
The bottom line
Two categories carry most of the value: mandibular advancement devices for moderate to severe snoring, and positional devices for anyone whose snoring is worse on their back. Nasal strips and mouth tape work for specific, identifiable restrictions and you can test both in under a minute.
Chin straps, sprays and specialist pillows are mostly not worth the money. And the free interventions — less alcohol, side sleeping, enough sleep — outperform most of the paid ones. (Everything that works, ranked.)