Smart Sleep Device for Better Sleep

Raizz Results

Smart sleep device results from Raizz

Raizz published results show changes in falling asleep, overall self-rated sleep quality, and biological indicators of deep-sleep quality. These results are presented separately from the independent research behind the closed-loop vibration technique.

↓25%

Time to fall asleep

Raizz published results showed a 25% reduction in time to fall asleep with closed-loop vibration before sleep.

↑30%

Self-rated sleep quality

Raizz published results showed 30% higher overall self-rated sleep quality, reflecting how participants rated their own sleep.

↑2x

Deep-sleep quality

Raizz published results showed two times stronger biological indicators of deep-sleep quality, an objective measure rather than a self-rating.

How It Works

How a smart sleep device responds through the night

Raizz follows a closed loop: it senses sleep, makes a decision locally on the wrist, responds with vibration, and uses the outcome to inform the next decision. The experience is designed around the period before sleep, the night itself, and the next morning.

01

Settle before sleep

Before bed, Raizz supports a personal sleep ritual with gentle vibration. You choose the vibration intensity that feels right for you during this ritual, and that same setting applies during sleep. The smart sleep device is designed to support falling asleep faster without asking you to interpret a score first. Its approach combines relaxation with a response that adapts to your sleep pattern.

02

Respond during sleep

During the night, Raizz detects when you fall asleep and identifies different sleep stages. When it predicts an emerging micro-awakening, the Band can trigger a very gentle vibration a few minutes beforehand. Your body senses that vibration as safe to stay asleep, which may lower the chance that the micro-awakening becomes a full awakening. The response happens automatically from your sleep state rather than through manual controls.

03

Adapt for tomorrow

Raizz completes its closed loop by feeding each outcome into the next decision. The Band senses, decides locally on the wrist, acts immediately, and adapts its response to your sleep pattern. Sleep tracking is part of that loop, but it is not the endpoint. The next night’s experience is informed by the same personalized approach to sleep stages, relaxation, and emerging arousal.

Independent Research

The research behind this smart sleep device

Three peer-reviewed studies published between 2019 and 2024 examined the same closed-loop, heart-rate-matched vibration technique used by Raizz. The research explores vibration timing, slow-wave sleep, wake-after-sleep-onset, and subjective sleep quality.

A 2024 study found that weak, heart-rate-matched vibration reduced wake-after-sleep-onset by roughly 24% and improved subjective sleep quality scores in people with poor sleep.

Kwon et al. (2024), Frontiers in Neuroscience

A 2021 study found that closed-loop vibration deepened slow-wave sleep and significantly improved next-day declarative memory retention.

Choi et al. (2021), Sleep

A 2019 study found that vibration only works when tuned very close to a person's real heart rate, which is the technical premise the other two studies build on.

Choi et al. (2019), Sensors

Findings from independent, peer-reviewed studies of closed-loop vibration stimulation — not a Raizz-run clinical trial.

Built To Respond

Sleep tracking that leads to a useful response

Raizz is a sleep tracking device designed to do more than record the night. Its confirmed capabilities focus on sensing sleep, responding with personalized vibration, and making behavioral sleep science easier to use in everyday life.

Sleep Sensing

Detect sleep stages overnight

Raizz detects when you fall asleep and the different sleep stages that occur through the night. This sleep tracking device uses those changes in state as part of a closed-loop response, rather than presenting sleep data as the final result. Detecting sleep stages gives the Band context for when vibration may be appropriate. Raizz is built around the idea that useful sleep information should lead to a considered action.

Detects sleep onset
Identifies sleep stages
Senses overnight changes
Supports closed-loop decisions

Gentle Response

Respond before full awakenings

Raizz is a sleep aid device that responds when it predicts an emerging micro-awakening. A very gentle vibration can begin a few minutes before that predicted disruption, giving the body a cue that it is safe to stay asleep. The vibration is intended to lower the chance of a full awakening, not to wake you. During sleep, Raizz triggers this response automatically according to your current sleep state.

Very gentle vibration
Responds before disruption
Automatic overnight triggering
Acts from sleep state

Personalized Support

Make your ritual personal

Raizz personalizes vibration to each person’s sleep pattern and varies its response by sleep stage. You control the vibration intensity during your pre-bed sleep ritual, and that chosen setting also applies through the night. This sleep tech device combines physiology, behavior, and relaxation in one experience. Its guidance is grounded in established behavioral sleep science, presented in a form intended for everyday life.

Personalized sleep patterns
Stage-aware vibration
User-set ritual intensity
Behavioral sleep guidance

Compare Approaches

A smart sleep device built for active support

Every category here does something well. This is where Raizz overlaps with sleep trackers, and where it does not.

	Raizz	Sleeping Pills	Sleep Masks	White Noise Devices	Tracker Wearables
Drug-free	✓	—	✓	✓	✓
Tracks sleep data	✓	—	—	—	✓
Personalizes to your data over time	✓	—	—	—	✓
Responds automatically while you sleep	✓	—	—	—	—
No nightly dosing or setup required	✓	—	✓	✓	✓
One-time cost, not a recurring purchase	✓	—	✓	✓	✓

What Changes

Sleep technology device support that feels more practical

Raizz is designed for people who want a clearer way to work on sleep quality, not another number to review in the morning. Each benefit reflects a confirmed part of the Band’s sensing, response, and personalization approach.

1

More support at bedtime

You can use gentle vibration as part of a personal pre-bed ritual when you are preparing to sleep. You set the intensity during that ritual, so the experience starts from a level you choose. Raizz is designed to support falling asleep faster through that calm, individualized approach. The focus is on helping you settle rather than asking you to act on a sleep score.

2

Fewer full awakenings

You get support while you are asleep, when it can be difficult to do anything about a disruption yourself. Raizz detects sleep changes and can respond before a predicted micro-awakening becomes a full awakening. The vibration is very gentle and occurs automatically according to your sleep state. This makes the electronic sleep device an active part of the night rather than a passive record of it.

3

Less data without action

You can still understand that sleep tracking is happening without making tracking the whole experience. Raizz uses sleep information to make a local decision on the wrist and respond immediately when appropriate. That closed loop gives sleep data a direct purpose. The goal is to improve sleep quality, not simply collect more information about a difficult night.

4

A personal night routine

You get an approach that accounts for your own sleep pattern and different sleep stages. Raizz varies vibration by sleep stage and carries your chosen ritual intensity into the night. Its behavioral guidance is grounded in established behavioral sleep science for everyday use. This gives you a smart device for sleep that combines relaxation, physiology, and behavior in one routine.

Made For Nights

A sleep tracker bracelet for common sleep challenges

Raizz is intended for wellness-aware adults who want active support for the sleep patterns that leave them tired, not more passive tracking alone.

1

Taking a long time asleep

If you spend a long time trying to fall asleep, the start of the night can feel like the hardest part. Raizz supports a pre-bed sleep ritual with gentle vibration at an intensity you select. The same intensity setting carries into sleep, creating continuity between winding down and overnight support. The approach is designed to support falling asleep faster without turning bedtime into another task.

2

Waking repeatedly overnight

If you wake repeatedly during the night, the problem can begin before you are fully aware of it. Raizz detects sleep stages and predicts emerging micro-awakenings as part of its closed loop. It can respond with very gentle vibration a few minutes before a predicted disruption. The intention is to help lower the chance that an emerging arousal becomes a full awakening.

3

Tired despite sleep tracking

If you already use a tracker but still wake tired, more charts may not be the missing piece. Raizz uses sleep tracking to guide an immediate, automated response on the wrist. The Band senses sleep, decides locally, and acts through gentle vibration when your state calls for it. This adds active support to the information you may already be reviewing each morning.

Who Built This

Backed by real expertise, stated plainly

Holly He

Founder & CEO

12+ years in product design at Apple, contributing to Vision Pro, Apple Health, and iPhone. MS from Stanford.

Edward Carryer

Advisor

Adjunct Professor Emeritus, Stanford Mechanical Engineering; former Director of the Smart Product Design Lab.

Dr. Joshua Lo, MD

Advisor

Sleep Medicine Fellow at Stanford; oversees clinical protocol design and medical validity.

What's Included

One system, three parts

Everything you need, nothing you don't.

●

Raizz Band

The wearable band worn overnight.

●

Raizz App

Sleep tracking, journal, and vibration history.

●

Charging Base

Docks the band between nights.

Common Questions

Smart sleep device questions, answered clearly

These answers explain the confirmed Raizz mechanism, what the Band is designed to do, and which purchase details still need brand confirmation.

What is the Raizz smart sleep device?

Raizz is an AI sleep wearable brand. It does not just track sleep, it actively improves it through real-time closed-loop vibrations. The Raizz Band detects when a person falls asleep and identifies different sleep stages through the night. When it predicts an emerging micro-awakening, it can respond with a very gentle vibration intended to help lower the chance of a full awakening.

How does Raizz sleep tracking work?

Raizz sleep tracking detects when you fall asleep and the different sleep stages that occur during the night. The Band continues to monitor sleep throughout the night as part of a closed loop: it senses, decides locally on the wrist, acts immediately, and feeds the outcome into the next decision. Raizz is not designed as passive sleep tracking alone. Its purpose is to use detected changes in sleep to guide a gentle, automatic response when appropriate.

Do I need to wear the Raizz Band all night?

Yes. Raizz is designed to be worn during sleep because its overnight mechanism depends on detecting sleep stages and responding to emerging arousal. The Band can trigger very gentle vibration a few minutes before a predicted micro-awakening. A pre-bed ritual also uses the Band, with the intensity you select carrying into the night. The product experience includes the Raizz Band, App, and charging base.

What does the sleep tracker bracelet detect?

The Raizz sleep tracker bracelet detects when you fall asleep and identifies different sleep stages through the night. These detected states help the Band determine when a closed-loop vibration response may be useful. Raizz does not present sleep detection as an endpoint by itself. The sensing information is used to support a local decision and an automatic response on the wrist.

Will Raizz vibration wake me up?

Raizz uses a very gentle vibration intended to help you stay asleep, not to wake you. The vibration can trigger a few minutes before a predicted micro-awakening, when the body may be moving toward a fuller arousal. Raizz describes the body’s response as interpreting the gentle vibration as safe to stay asleep. During sleep, triggering is automatic and based on your current sleep state.

Can I choose the vibration intensity?

Yes. Raizz lets you control vibration intensity during your pre-bed sleep ritual. The intensity you select for that ritual is also the setting used during sleep. Overnight vibration is not manually triggered; Raizz activates it automatically based on your sleep state. Vibration is personalized to each person’s sleep pattern and differs by sleep stage.

Is Raizz a sleep tracking device or a sleep aid device?

Raizz is both a sleep tracking device and a sleep aid device in the sense that it detects sleep changes and uses that information to provide gentle vibrational support. The Band detects sleep onset and different sleep stages rather than simply recording a morning score. Its closed-loop approach responds before predicted micro-awakenings. Raizz is designed to improve sleep quality, not just track sleep.

What research supports this sleep technology device?

Three peer-reviewed studies published from 2019 to 2024 examined the same closed-loop, heart-rate-matched vibration technique as Raizz. A 2024 study in Frontiers in Neuroscience found that weak matched vibration reduced wake-after-sleep-onset by about 24% in 27 people with poor sleep quality. A 2021 study in Sleep found deeper slow-wave sleep in 12 healthy adults. These are third-party research findings, not Raizz trial data.

What is included with the electronic sleep device?

The confirmed Raizz product includes the Raizz Band, the Raizz App, and a charging base. The Band detects sleep onset and sleep stages, then can provide an automated gentle vibration response during sleep. The App supports the overall Raizz experience, including the pre-bed sleep ritual. Raizz has not confirmed additional hardware, accessories, or technical specifications for this page.

A smart sleep device that improves sleep, not just tracking it