Light finds the pulse.
Your phone’s light illuminates your fingertip. The camera detects small changes in reflected light as blood volume changes with each pulse—a method called photoplethysmography, or PPG.
A little space.
Entirely yours.
Meet Sovereign. A thoughtfully designed companion for women navigating perimenopause—with guided practices, private reflection, and Quinn by your side.
Coming soon to the App Store · iPhone and Apple Watch
Screens from the app in development. Final release content may change.
One quiet minute.
A clearer sense
of you.
Your fingertip. Your iPhone camera.
Your Nervous System Weather.
A 60-second camera pulse reading becomes a personal check-in. Learn your patterns through perimenopause, and make room for what you need today.
Camera check-in · No wearable required
A wellness reflection tool. It does not measure hormones or diagnose a condition.
Rest your fingertip
over the lens + light
over the lens + light
SOVEREIGNTake today’s
Take today’s
reading.
Settle in. Let your hand rest.
Breathe as you normally would.
SOVEREIGNA moment
A moment
to listen.
0:00/ 1:00
Reading your pulse
Stay still. Let the reading come to you.
YOUR WEATHER
Clear
Steady skies.
Your system is holding you today.
Today’s HRV estimate46 msYour baseline44 ms
Example after a baseline is established
Less “what’s wrong
with me?”
More curiosity
about you.
When sleep shifts, patience runs thin, or a familiar day feels different, having a personal pattern to reflect on can give your check-in a place to start.
Heart rate variability is the variation in timing between beats. Sovereign estimates it from your camera pulse reading and compares your daily pattern with your own recent baseline.
In the first few days, you’ll see “Learning You.” A baseline begins after readings on at least three prior days. As you keep checking in, it uses the previous 14 days of available readings.
A signal to notice.
You bring the context.
A little wonder.
A real method.
Here’s what’s happening beneath that quiet minute.
Timing reveals a pattern.
The app checks the signal and estimates pulse timing and variability. It asks you to adjust or try again when it cannot get a clean reading. Camera-based estimates are sensitive to movement and recording conditions.
Your history gives it context.
Sovereign’s Weather compares your daily variability estimate with your own baseline. The weather names are Sovereign’s way of presenting those patterns, not clinical categories or a prediction of how you will feel.
The science, and what a reading can tell you
Researchers have studied smartphone PPG for estimating pulse variability, and HRV changes during menopausal symptoms. Those studies support exploring the underlying signals; they do not validate Sovereign’s specific algorithm or Weather labels.
HRV can vary with breathing, sleep, activity, illness, medication and other factors. A finger scan cannot identify hormone levels, determine menopausal stage, or tell you why a symptom is happening. Short camera readings are not interchangeable with a clinical ECG assessment. Use your reading alongside how you feel, and discuss health concerns with a qualified clinician.
For the moments
that don’t make
the calendar.
The conversation you’re still replaying. The evening you need to exhale. The thought you want to get out of your head and onto a page.
Sovereign brings those small acts of care into one considered space. Open it where you are. Begin with what you need.
Meet the quieter
side of your day.
A little less alone. A little more clear.
Quinn is your AI companion for reflection, grounded next steps, and putting words to what you are experiencing. You choose what to share. AI support is not a therapist or emergency service.
Design screens · illustrative conversation and progress
A moment to pause.
Even on your wrist.
Apple Watch support brings a breathing pause closer. Apple Health integration helps you explore HRV trends over time, if you choose to connect it.
Apple Watch
Breathing support and companion experiences designed for a small screen.
Apple Health
Optional health access. Personal trends for reflection, never a diagnosis or a six-second verdict on your health.
Your inner world
deserves boundaries.
Share with intention
Quinn’s AI features ask for your consent. Choose whether health context is shared with AI, separately from connecting Apple Health.
Make reflection personal
Journaling and optional biometric protection give your thoughts a dedicated place in your day.
Health, on your terms
Apple Health access is optional. You control permissions in your device settings.
Understand the limits
Coaching, AI, and health trends support reflection. They do not replace professional healthcare or emergency support.
Start with a listen.
See where it takes you.
The Silent Crash is your introduction to Sarah’s world.
Four audio chapters. Four companion guides. One first step.
The Sovereign app is coming soon to the App Store.
Good questions.
Clear answers.
Can I download Sovereign today?
Not yet. Sovereign is coming soon to the App Store for iPhone. The screens on this page come from the app in development, and final release content may change.
Is Quinn a real person?
Quinn is an AI assistant for reflection and general wellness support. It is not a human coach, therapist, clinician, or emergency service.
Do I have to connect Apple Health?
No. Health access is optional. HealthKit permissions and consent to share health context with Quinn are separate choices.
Is Android available?
Not yet. Sovereign launches first on iPhone; Android is planned for a later phase.