Your mouthpiece has a shelf life.
Most people ignore it.
Stillr ships two fresh premium mouthpieces to your door every 90 days — automatically. Better fit, better hygiene, better sleep. First box 50% off.
The part nobody talks about
Sound familiar?
If you've used a mouthpiece for a while, you already know these feelings — even if you never named them.
You're probably overdue for a replacement
After 90 days, the thermoplastic in your mouthpiece has shifted from its original shape. The fit loosens. The effectiveness quietly drops. Most regular users go 5 or 6 months between replacements — without realizing the piece they're wearing isn't the piece they started with.
The morning jaw ache you've accepted
Soreness when you wake up isn't just something you get used to — it usually means the fit isn't quite right for your anatomy. One advancement angle doesn't work for every jaw. You've probably never been given a second option to compare it against.
You've spent hundreds — with nothing back
Committed mouthpiece users spend $150–$240 a year replacing the same product. There's no loyalty reward, no upgrade, no acknowledgment that you've been a consistent customer. You're just another order in the system.
The 90-day rule
What actually happens to your mouthpiece over time
Most mouthpiece instructions mention replacing every 3–4 months. Most people ignore this because there's no visible signal — it still looks fine. But "looks fine" and "works fine" are two different things after the 90-day mark.
The thermoplastic softens from nightly use and body heat. The jaw advancement position shifts. Bacteria accumulates in micro-abrasions that no brush can fully reach. You're sleeping on a different device than the one you started with.
Stillr is built entirely around this timeline. Your box ships at exactly the right moment — before the degradation affects your sleep.
Peak performance
Original shape, firm fit, full jaw advancement. This is what you paid for.
Working well
Still effective. Minor softening. Within normal operating range.
Starting to degrade
Plastic has shifted. Fit is slightly looser. Bacteria accumulating in surface wear.
Past its prime
Meaningfully reduced effectiveness. Hygiene compromised. You probably haven't noticed — but your sleep has.
Fresh box arrives
You swap it in. You never spend a night past the optimal window.
Simple by design
Here's how Stillr works
Three steps. Then you just sleep.
Take the fit quiz
Two questions about your jaw and comfort preferences. It takes 45 seconds and determines which option goes in your first box.
Receive your first box
Both soft and firm options, a travel case, cleaning tablets, and your personalized fit card — delivered in 2 days.
Never think about it again
A fresh box ships automatically every 90 days. You wake up one morning, there's a box at the door. That's the whole experience.
Then $39.95 every 90 days, shipped automatically. Pause, skip, or cancel in one tap — no calls, no forms.
- 2 fresh premium mouthpieces — soft comfort + firm support
- Personalized fit card based on your comfort quiz
- Travel case + 2-pack cleaning tablets
- Quarterly sleep note — a personal touch every box
- Free shipping on every delivery
The replacement cycle, finally on autopilot.
You already know mouthpieces need replacing. You've probably already stretched one longer than you should have. Stillr removes that entirely — the decision is made, the box is coming, and your sleep is protected.
Every box includes two firmness options because what feels right for one person's jaw doesn't always work for another. You stop guessing. You start sleeping.
Why Stillr
Built for people who take their sleep seriously
Everything here was designed around one thing: making sure you never compromise on a piece that's past its prime.
Arrives before you run out
Timed to the 90-day replacement cycle, not to your memory. Your fresh box arrives right when your current pieces have hit their limit — without a single reminder or reorder.
Always at peak performance
A fresh piece works the way a mouthpiece should work. By the time degradation sets in, your next box is already on the way. You'll never notice the dropoff — because you'll never reach it.
Two fit options every box
Jaw soreness and drooling are often fit problems, not product problems. Every Stillr box includes both soft and firm options — plus a quiz-based card — so you find what actually works for your anatomy.
Loyalty that actually means something
Regular mouthpiece users spend $160–$240 a year and receive nothing back for it. Stillr subscribers get a better product, more included in every box, and a lower effective price per piece.
No lock-in, ever
Cancel, pause, or skip a quarter in one tap. No email chains, no phone calls, no 15-day cancellation windows. We'd rather earn your subscription every 90 days than trap you into one.
Real subscribers
What our subscribers say
From people who had already been using a mouthpiece — and switched.
"I'd been wearing the same mouthpiece for about five months before I found Stillr. When the first box arrived and I put in a fresh piece that night, the difference was immediate — better fit, no morning jaw ache. I hadn't realized how much I'd normalized the soreness."
"The soft option in the first box was a revelation. I'd always had the drooling issue and just assumed it was how mouthpieces worked. It's not — it was the fit. Three boxes in now, I always go soft, and it's night and day compared to what I was using before."
"My wife noticed before I did. About two weeks after my first Stillr box she said 'whatever you changed, don't change it back.' I honestly think I'd been sleeping on a worn-out piece for months without realizing the snoring had crept back. The automatic shipping alone is worth it."
Sleep better or your money back.
Try Stillr for 60 full nights. If you don't sleep better — if the fit isn't right, the snoring hasn't improved, or it simply isn't for you — we'll refund the full amount. No return shipping required. No questions designed to make you feel awkward for asking. We'd genuinely rather refund you than keep money from someone who didn't get what they came for.
Your next replacement should already be on its way.
Get my first box for $19.95No commitment. First box ships in 2 days. Cancel anytime.