Hot flash tracker for iPhone
Turn a moment of heat into one clear page.
Glasyn logs a hot flash in two taps, even mid-episode. It shows your own patterns, then turns them into the one-page Doctor Report clinicians actually ask for. No account. Nothing leaves your iPhone.
The actual app, unretouched. Tap, rate it, done.
Built for the moment itself
Log it in two taps, even mid-episode.
A hot flash is not the moment for menus. Glasyn opens straight to the log button and works one-handed, from a cold launch, in seconds.
Tap once to log
From the app, or straight from a Lock Screen and Home Screen widget the moment it starts.
Tap the strength
Mild to very severe, the same four-level scale used in clinical trials, so your log speaks your clinician's language.
Back to your day
Night sweats, sleep disruption, and trigger tags can be added later, or never. Logging never nags.
- One-tap widget. Record from the Lock Screen without unlocking; Glasyn follows up for intensity when you are ready.
- Night mode. A night sweat logged at 3 a.m. records whether it woke you, because sleep disruption is what clinicians ask about.
- Your own trigger tags. Caffeine, alcohol, stress, a warm room, or anything you want to test against your data.
- No streaks, no guilt. Miss a week and nothing scolds you. The diary is for you, not the other way around.
The headline feature
The Doctor Report: six answers on one dated page.
Appointments are short and memory is vague. One tap generates a clean summary with exactly what clinicians ask for, ready to print or show on screen.
- Frequency over time, so "a lot" becomes a number.
- Severity breakdown on the trial-standard scale.
- Night sweats and sleep disruption, counted separately.
- How long symptoms have run, your top triggers, and daily-life impact.
Patterns, not guesses
See what your body is actually doing.
Over weeks, your log becomes a calendar heatmap: bigger, warmer dots on harder days. You see when episodes cluster, whether nights are getting worse, and which triggers actually correlate, in your data, not someone else's averages.
The heat colors mean one thing only: intensity. The rest of Glasyn stays calm on purpose.
Private by design
Your body's data belongs on your phone. Full stop.
Most health apps upload what you log. Glasyn was built the other way around: there is no server to send anything to.
No account
No sign-up, no email, no password. Download it and start logging.
No cloud, no tracking
No analytics, no third-party SDKs, nothing uploaded. Every entry stays on your iPhone.
Backup on your terms
Optional encrypted backup with a passphrase only you know. Or don't; that's fine too.
Honest pricing
Logging is free. Forever. Not a trial.
A symptom diary you might keep for years should never hold your own entries hostage.
Glasyn
Free forever
- Unlimited two-tap logging
- Night sweats and trigger tags
- Lock Screen widget
- Basic doctor report
Glasyn Plus
Subscription, or pay once and keep it
- The full one-page Doctor Report (PDF)
- Calendar heatmap and long-term patterns
- Trigger correlation insights
- Monthly recap
The one-time lifetime option is deliberate. Frequent menopause symptoms last a median of about 7 years; we would rather you pay fairly once than rent your own diary.
Questions
Frequently asked
What is Glasyn?
Glasyn is a private hot flash and menopause symptom diary for iPhone. It logs a hot flash in two taps, shows your patterns over time, and generates a one-page Doctor Report for appointments. There is no account and nothing leaves your device.
Is Glasyn free?
Yes. Logging every hot flash is free forever. Glasyn Plus unlocks the deeper Doctor Report and long-term pattern insights, with a fair one-time lifetime option as well as a subscription.
Does Glasyn need an account?
No. There is no account, no sign up, and no cloud. Everything you log stays on your iPhone, which is a deliberate privacy choice.
What is the Doctor Report?
The Doctor Report is a dated one-page summary with the six things clinicians ask for: frequency over time, severity breakdown, night sweats and sleep disruption, how long symptoms have run, your top personal triggers, and daily-life impact. Print it or show it on screen at your appointment.
Does Glasyn work in perimenopause?
Yes. Glasyn is built for both perimenopause and menopause. It records what you experience, in your own words, without inferring or labeling your stage.
Is Glasyn medical advice?
No. Glasyn is a personal wellness diary, not a medical device. It does not diagnose, treat, or provide medical advice. Always consult a qualified healthcare provider.
The next one is worth writing down.
Two taps now. One clear page at your next appointment.