Better nights. Better days.
An AI sleep coach, and your companion
Free while in early access · iOS
Works with Apple Health.
Get sleep insights from your Apple Watch and other compatible devices.
Feature Highlight
From sleep to the day ahead.
Understand your sleep
A clear view of your night, from sleep stages to timing and quality.
See how you’re doing today
A simple read on how ready your body is for the day.
Sleep Age
A different way to see your recent sleep — and how it changes over time.
See the bigger picture
Follow your sleep across nights and weeks to find what’s really changing.
Fall asleep with nature
Immersive spatial soundscapes inspired by rain, waves, wind, and the world outside.
Guidance from mia
mia learns your sleep and helps you make sense of what’s happening.
Insights into your nights.
See what shaped your night — your score, your sleep stages and your resting rhythms, all in one glance.
Sleep Performance
How is Sleep Performance calculated?Sleep Performance weighs 8 dimensions — time asleep, efficiency, sleep architecture, when you go to bed and how regular that is — and scores them against published research.
Contributors
Watch your sleep improve.
Small wins add up. See your sleep quality climb week over week as mellows learns what works for you.
Staying balanced
Meet 
, your AI sleep companion.
Get thoughtful insights, answers, and guidance based on your sleep.
- Show mehow last night actually went
Turn your sleep data into a story you can understand.
- Analyzemy sleep trend this past week
Spot patterns in your sleep, without digging through charts.
- Give me ideasfor getting deeper sleep
Get simple ideas based on what your sleep is telling you.
- Logmy coffee, stress and workouts today
Say it in a sentence — coffee, stress, a late workout. No forms.
- Walk me througha few minutes of breathing before bed
A few guided minutes to switch your body from day to night.
- Pick a soundto help me fall asleep tonight
A soundscape picked for how you feel right now, not a library to browse.
Beyond sleep insights.
Creating better nights through sound.
Real sound, alive with detail, shaping the feeling of being there.
Spatial Mix, layered with intention.
Enhanced with Spatial Audio for a deeper sense of presence.
Sleep, and so much more.
Go beyond sleep to understand your body, daily habits, and long-term health.
Track
Track your everyday life
Companion
A coach, and a companion
Discover
Notice the changes in you
Action
Start making a change tonight
Change
Better nights. better days.
Privacy first.
Designed with privacy in mind.
Your raw data stays on your device
Your most detailed health data never leaves your device. Heart rate, HRV, blood oxygen, and minute-by-minute sleep stages are encrypted and stored on your iPhone, never uploaded to our servers.
Sent only when needed, always encrypted
When you use mia or AI Sleep Insights, we only send the recent sleep summary you choose to share, with your consent. All data is encrypted in transit. Your data is never sold or used for advertising.
Your nightly sleep records are not stored on our servers. We will never sell your data.
Questions?
Everything you might wonder before your first night with mellows. Can’t find your answer? We’re just a message away.
mellows is an AI-powered sleep health app.
It connects with your Apple Health sleep and health data to help you understand and improve your sleep through sleep insights, personalized guidance, and better sleep experiences—while building a bedtime rhythm that feels right for you.
1. Sleep Health Insights
mellows goes beyond telling you how long you slept last night. It helps you understand what happened during your sleep and what factors may have influenced it, using insights from your sleep and health data.
- Sleep Performance: Evaluates your daily sleep performance based on sleep duration, regularity, efficiency, and daytime behavioral factors.
- Sleep Recovery: Helps you understand how well your body recovered during the night and offers data-informed suggestions for the day ahead.
- Sleep Age: Continuously assesses your sleep health across multiple dimensions and tracks how it changes over time.
- Long-Term Trends: Looks beyond individual nights to help you discover long-term patterns across your sleep habits, physical state, and lifestyle.
2. Your AI Sleep Coach & Companion · mia
mia is your personal AI sleep assistant in mellows. Powered by agent technology, mia understands your sleep and health data and combines it with your personal context to provide more natural, personalized insights and guidance.
She can:
- Analyze your sleep and health data and answer questions about your sleep
- Offer personalized recommendations based on your current state
- Guide you through breathing and relaxation exercises
- Help you find sounds and music that suit how you feel in the moment
- Help you track everyday behaviors that may affect your sleep
- Learn your sleep patterns over time and become a companion for your ongoing sleep journey
3. High-Quality Sleep Content & Bedtime Rituals
Sleep is more than data. mellows also creates a warmer, more immersive bedtime experience to help you leave the busyness of the day behind and gradually settle into the night.
- Nature Soundscapes: Real recordings of rain, forests, waves, campfires, and more
- Sleep & Meditation Music
- EMDR Music
- Spatial Audio Soundscapes
- Breathing Exercises
- Bedtime Rituals & Relaxation Guidance
From understanding your sleep, to knowing what you can do tonight, to truly settling down—mellows is here to turn sleep from something you simply track into an experience worth taking care of.
mellows is currently available on iPhone. Apple Watch is supported through Apple Health. Android is not currently supported.
Download mellows from the App Store, create an account, and follow the quick setup guide. You’ll need to connect Apple Health so mellows can access your sleep and health data. If you’d like to receive daily sleep insights, you can also enable notifications.
That’s all you need to do. You’ll be ready to go in just a few minutes.
Different mellows features require different amounts of data.
You can start enjoying soundscapes and music from your very first session. Sleep insights become more personalized as mellows learns from your data. Typically, after 7–30 nights of consistent tracking, mellows can build a more complete picture of your personal sleep baseline.
Some long-term metrics also require enough historical data before they can be calculated. For example, Sleep Age needs about 7 nights before it can be calculated, and becomes more confident at around 14 nights; some other long-term trend metrics need a longer history still.
That’s why mellows doesn’t draw conclusions from a single night. As your data builds over time, your insights become more stable, meaningful, and personal.
mellows doesn’t require dedicated hardware, but it needs sleep and health data from Apple Health.
mellows has been fully tested and optimized with Apple Watch data, so you can use its core sleep features based on the sleep and physiological data recorded by Apple Watch. We’ll gradually expand support for other devices.
If you use another device that syncs data to Apple Health, some of that data may also be available in mellows. However, the metrics and features available depend on the data provided by each device, so we can’t guarantee full support for every device yet.
Without a device that can track sleep and nighttime physiological data, you can still use some mellows features, but core features such as sleep and recovery will be limited.
Ready to sleep better?
Join early access and start your journey to deeper, easier nights.