For iPhone · Pay once, log forever · No subscription

The hot flash journal at 3am.

Log a hot flash in one tap — even half-asleep. Track your cycle, HRT, sleep and mood, then bring a clean report to your doctor. Everything stays on your phone.

Download on the App Store
$3.99 once. Less than a month of the subscription apps.
Built for the moment it happens

Other apps want a daily check-in. HotFlash wants two seconds.

No questionnaires, no streaks, no coach. Just the fastest way to write down what your body is doing — so the pattern is there when you need it.

HotFlash Today screen with a large Log Hot Flash button, a 24-hour timeline, and HRT medications
One-tap log

Tap once. It's logged, with the time.

The big terracotta button is the whole point. Tap it at 3am without your glasses and HotFlash records the time. Add severity, triggers, or a night sweat later — or never.

Everything is dark, calm and quiet, so checking it at night doesn't wake you up the rest of the way.

Live Activity

Hold the button. The timer runs on your Lock Screen.

For the long ones, hold to start a timer. It lives on your Lock Screen and in the Dynamic Island, so you don't have to dig through menus while it's happening.

When it passes, one tap to end it and rate how bad it was: mild, moderate, severe.

iPhone Lock Screen at 3:17 with a HotFlash Live Activity showing a hot flash in progress at 2 minutes 14 seconds
Trends screen with a 24 by 7 time-of-day heatmap showing peaks at 3am and 3pm
Trends

Find your pattern. Hour by hour, day by day.

Hot flashes cluster. The 24×7 heatmap shows when yours do — the 2–4am wake-ups, the mid-afternoon wave — alongside frequency over 7, 30 and 90 days and how triggers line up.

No more "I think it's been getting worse." You'll know.

Doctor-ready report

Bring a clean PDF to your appointment.

One tap turns your log into a tidy report: hot flash frequency, time-of-day pattern, HRT compliance, sleep, mood and your own notes. Made on your phone and shared only when you share it.

Ten minutes with your GP goes a lot further when the data is already on the page.

Menopause Report PDF preview with hot flash totals, a daily frequency chart, a time-of-day heatmap, and an HRT compliance table
Day 47
Cycles that count up
Perimenopause cycles aren't predictable, so HotFlash doesn't pretend. It counts days since your last period and shows your real history — no false forecasts.
HRT & meds
Log what you actually take
Patches, gels, oral and vaginal estrogen, progesterone, testosterone, non-hormonal options. Optional reminders and compliance tracking. There's no preloaded drug database: you add what you take.
5.8 h
Sleep & mood in one morning log
Sleep quality, hours, wake-ups, night sweats and morning mood in a single quick sheet. Optional Apple Health sleep import if you wear a watch.
Private by design

No subscription.
No account.
No cloud.

Just a private menopause log, lived only on your phone.

OfflineAlwaysWorks in airplane mode.
AccountNoneWe don't have one for you.
TelemetryZeroNo analytics. No third-party SDKs.
LockFace IDOptional, for extra privacy.

Pay once. Log forever.

Perimenopause can last years. Paying for a symptom log every year for all of it shouldn't be part of the deal.

HotFlash – Menopause Log
$3.99
once.
Every feature, every future update. No in-app purchases, no premium tier, no ads.
Download on the App Store
What a menopause log usually costs
Period apps with a menopause mode
The menopause features sit behind a premium plan
~$40 / yr
Menopause coaching apps
Account required, with an upsell to "coaching"
$40+ / yr
Free wellness apps
You pay with your symptom data in someone's cloud
"free"
HotFlash
The whole log, on your phone, yours to keep
$3.99 once

Questions, answered.

Where is my data stored?
On your iPhone and in your own device backups, and nowhere else. HotFlash has no account, no server and no analytics. It never sends your symptom data anywhere.
Is $3.99 really the whole price?
Yes. You pay once and get every feature and every future update. There's no subscription, no in-app purchases and no ads.
Does it predict my next period?
No, on purpose. In perimenopause, cycles are irregular and predictions mislead. HotFlash counts days since your last period and shows your real history.
Do I need an Apple Watch or Apple Health?
No. Everything works on its own. If you already track sleep in Apple Health, HotFlash can optionally import it into your morning log.
What do I need to run it?
An iPhone running iOS 17 or later. The Live Activity timer shows on the Lock Screen and in the Dynamic Island on supported models.
Will it tell me what treatment to take?
No. HotFlash is a personal log, not a medical device, and it doesn't diagnose or recommend treatment. Its job is to help you bring good information to the people who can.

The next one will come at 3am. Be ready for it.

Install HotFlash tonight. It takes one tap to log the next one.

Download on the App Store
$3.99 · pay once