Health insights from the iPhone you already carry
Yes. Daylumen reads the steps, activity and any sleep already stored in Apple Health, so an iPhone alone is enough for a plain-language daily reading. It is free to download with no subscription, and when there is little data it tells you the reading is thin instead of guessing.
A ring or a watch gives you more signals. It is not the only way to start. Most iPhones already hold weeks of steps, activity and, if you use it, sleep. The missing piece is someone explaining it.
What an iPhone alone can give you
Daylumen does not measure your body. It reads what is already stored in Apple Health, so what you get depends on what your phone and your other apps have written there.
- Steps, distance and flights climbed. These come from the iPhone itself when you carry it.
- Sleep, if something records it. Daylumen reads sleep entries in Apple Health from any source. If nothing writes sleep data, you can add a short note about last night yourself.
- Weather. Optional. Daylumen can look up daily weather for your area through Apple WeatherKit, so a rainy week and a low-energy week can be seen side by side.
- Calendar load. Optional. Only the number and length of non-all-day events are counted. Titles, notes and attendees are never read.
- Your own check-ins. A quick log of mood, energy and stress, plus a one-line note.
More signals appear if you do have a watch or a smart scale: resting heart rate, heart rate variability and body measurements are read when they exist. Daylumen works with fewer signals and says so when a signal is thin.
What you get back
Instead of charts, Daylumen gives a short daily reading in plain words, compares today with your own usual range, and shows which things tend to move together for you, such as shorter sleep and a lower step count the next day.
In the current version you can also pick one thing you care about, sleeping more steadily, keeping afternoon energy or keeping movement going, and get one honest call for the day: protect it, explore it, or let it go today. It is based on your own recent data, not on a generic target.
What it will not do
- It does not diagnose or treat anything. Daylumen is a wellness and self-reflection tool, not a medical device.
- It does not invent data. With little data it will tell you the read is thin.
- It does not need an account. Your data is computed on your iPhone.
Who this is for
You carry an iPhone, you do not wear a watch or a ring, and you would still like to know whether your last few weeks were typical for you. Maybe you tried a recovery app and found it needed a watch to do anything useful. Maybe you opened Apple Health, saw a wall of charts, and closed it.
Cost
Daylumen is free to download, with no ads and no subscription. A one-time in-app purchase unlocks the deeper tools, such as the full correlation view and following more than one focus at a time. The daily reading itself is free.
Frequently asked questions
Do I need an Apple Watch to use Daylumen?
No. Daylumen reads whatever is in Apple Health. Steps and activity come from your iPhone. A watch adds signals such as resting heart rate and heart rate variability, but it is not required.
Does Daylumen record my sleep?
No. Daylumen reads sleep data that other sources write into Apple Health. If you have no sleep source, you can log a short note about your sleep yourself.
Is Daylumen a medical app?
No. It is a wellness and self-reflection tool. It does not diagnose, treat or replace professional medical advice.
Daylumen reads the health data already on your iPhone and tells you what it means for today.
Get Daylumen on the App StoreFree to download · iPhone · iOS 17 or later · a one-time in-app purchase unlocks the deeper tools