Sleep tracker for iPhone & Apple Watch
Understand your sleep. Discover your sleep animal.
Lunomia turns your Apple Watch sleep data into a morning report you'll actually enjoy reading — deep, core and REM sleep stages, heart rate and breathing, weekly trends, and one of 20+ sleep animals that matches how you slept. Free, private, and 100% on-device.
Download Lunomia free on the App Store
For iPhone, iPad and Apple Watch · Works with Apple Health · No account required
Screenshots
A sleep tracking app that makes mornings fun
Swipe through what a night with Lunomia looks like — from sleep stage analysis to your personal sleep animal.
How it works
Just wear, sleep, and wake up to answers
No manual logging, no timers to start. Lunomia does its sleep analysis automatically from Apple Health data.
Wear your Apple Watch to bed
Enable sleep tracking on your Apple Watch (or any tracker that syncs with Apple Health) and just sleep. Nothing to start or stop.
Lunomia analyzes your night
Every morning Lunomia reads your sleep stages, heart rate, breathing and blood oxygen from Apple Health and processes them privately on your device.
Meet your sleep animal
Get a clear report — time asleep, sleep efficiency, stage breakdown — plus the animal that matches your night. Watch trends improve week over week.
20+ sleep animals
Bear, owl, cat, koala, lion and more — each night is matched to an animal, with an encyclopedia of fun sleep facts.
Sleep stage analysis
Deep, core, REM and awake time visualized clearly for every night, week and month.
Heart, breathing & oxygen
See how your body behaves overnight: heart rate, respiratory rate and blood oxygen insights.
Sleep schedule & reminders
Set your bedtime and wake-up time in one calm flow, with a gentle reminder before bed.
Sleep Shield
Block distracting apps during your sleep schedule with Lunomia Pro — no more 1 a.m. doomscrolling.
AI dream analysis
Describe a dream and get a thoughtful, psychology-inspired AI interpretation in seconds.
Sleep guides
Learn to sleep smarter
Practical, no-nonsense guides to the questions people actually ask about sleep — and how Lunomia helps answer them.
What is my sleep animal?
Skip the quiz — find your real sleep animal from actual sleep data.
Read the guide →
How to track sleep with Apple Watch
Setup, requirements, and how to actually understand the results.
Read the guide →
Sleep stages explained
Deep vs core vs REM sleep — what's normal and what each stage does.
Read the guide →
What is a good sleep efficiency?
How the % is calculated, what to aim for, and how to raise yours.
Read the guide →
Normal heart rate while sleeping
Typical overnight heart rates by fitness level — and when to pay attention.
Read the guide →
AI dream interpretation
What AI can (and can't) tell you about what your dream means.
Read the guide →
How to block apps at night
Stop doomscrolling before bed on iPhone — Screen Time vs Sleep Shield.
Read the guide →
How to fix your sleep schedule
A realistic 2-week plan to reset your bedtime, backed by your own data.
Read the guide →FAQ
Frequently asked questions
What is a sleep animal?
A sleep animal is a fun, easy-to-understand summary of how you slept. Lunomia analyzes your bedtime, sleep duration, sleep stages and restlessness each night and matches the pattern to one of more than 20 animals — a bear for long, deep sleep, an owl for late nights, a cat for flexible napping, and many more. Learn more
Is Lunomia a free sleep tracker?
Yes. Lunomia is free to download and free to use for nightly sleep analysis, sleep stages, trends and sleep animals. An optional Lunomia Pro upgrade unlocks extras such as Sleep Shield app blocking. Download it free
How do I track my sleep with Apple Watch?
Wear your Apple Watch to bed with sleep tracking turned on. Lunomia reads the data from Apple Health and turns it into a clear morning report — and there's a Lunomia Apple Watch app for checking sleep stages right on your wrist. Learn more
Do I need an Apple Watch to use Lunomia?
No. Lunomia works with any sleep data in Apple Health, so other trackers and smart beds that sync with Apple Health work too. An Apple Watch gives the most detail — sleep stages, heart rate, breathing and blood oxygen. Learn more
How does Lunomia analyze deep, core and REM sleep?
Lunomia reads the sleep stages recorded by your Apple Watch — Awake, REM, Core and Deep — and visualizes every night as an easy-to-read chart with totals, percentages and long-term trends. Learn more
What is a good sleep efficiency percentage?
Sleep efficiency is the share of your time in bed that you actually spend asleep; 85% or higher is generally considered good. Lunomia calculates it automatically every night and charts it over time. Learn more
What should my heart rate be while sleeping?
Most healthy adults land between roughly 40 and 60 beats per minute overnight — lower than daytime resting heart rate. Lunomia shows your overnight heart rate, breathing rate and blood oxygen next to your sleep stages. Learn more
Can AI really interpret my dreams?
AI can't read your mind, but it can analyze the symbols, emotions and themes in a dream you describe. Lunomia's AI dream analysis gives you a structured, psychology-inspired interpretation of any dream in seconds. Learn more
How do I stop scrolling on my phone at night?
Make the distracting apps unavailable. Sleep Shield in Lunomia Pro blocks the apps you choose for the whole of your sleep schedule, so late-night doomscrolling simply isn't an option. Learn more
Is my sleep data private?
Yes. Lunomia processes your sleep data on your device. There's no account to create, and your sleep data never leaves your iPhone. Read the privacy policy
Tonight's sleep has a story. Meet the animal that tells it.
Download Lunomia free, wear your Apple Watch to bed, and wake up to your first sleep analysis — stages, heart rate, trends and your very own sleep animal.