A private pattern tracker for perimenopause
Your symptoms aren't random.
They're a pattern waiting to be seen. Rhyvia helps you see it.
Log your day in under a minute. Rhyvia quietly compares the weeks and months, turning hard-to-remember details into useful observations.
Free · No Rhyvia account · The browser diary stays on this device · Android beta 1.40
After short sleep, brain fog tends to be worse
Rhyvia compares short nights with longer ones, then says what tends to show up. The words stay plain.
The problem is memory
Was the brain fog worse this month or last? Do the night sweats follow the stressful weeks, or the wine, or neither? Has the joint pain always come in the last week of the month — or does it just feel that way?
These are pattern questions, and human memory is genuinely bad at them. It smooths over the details, overweights the last few days, and quietly rewrites the rest. That's why perimenopause feels random from the inside — the signal is spread across too many weeks to hold in your head.
Write it all down, consistently, and let something else do the remembering.
Patterns need data — so logging is fast
The analysis is only as good as the diary beneath it, which is why Rhyvia's daily entry is built to survive real life: everything is a tap, a full day takes well under a minute, and you can skip anything.
Once a few parts of the day are filled in, sections you are not using tuck away. Food notes are there when you want a rough reminder. On the Android app, a daily reminder can nudge you to log. It stays on the phone.
How Rhyvia finds your patterns
Today is the check-in. History keeps the days, and that is where you export or import a backup. Summary, Insights and Trends read the diary back to you. Settings is where the Android app offers optional Google Drive sync.
Insights and Trends look at your history through a few different lenses, each one aimed at a kind of pattern that is hard to hold in memory:
What a finding looks like
A finding appears only when there is enough of your own history behind it. The words stay plain: mildly or clearly better or worse. These are observations, not instructions — what you do with them is yours to decide, ideally with your doctor. Something you log every day cannot be compared with days without it. Trends can also draw the same history as a chart, by day, week, month, or weekday.
New in 1.40: Doctor summary. On the Android app, Summary can make a one-page PDF of your cycle, symptoms, HRT and triggers to bring to a GP appointment. It is made on your phone, and nothing is uploaded.
New in 1.42: Doctor summary now shows how often you took each treatment.
See what Rhyvia does with your daily check-ins
Start with a few taps. As your history grows, Rhyvia turns those entries into observations you can explore and take to an appointment.
A full day takes under a minute. Sick days and sore spots stay tucked away until you need them.
Rhyvia waits for enough history, then tells you in plain words.
In the browser, use the same browser and device, and export a backup. Drive sync is in the Android app.
Private by design
Pattern-finding this personal should stay personal. There is no Rhyvia account and no Rhyvia server. The diary lives on your device. On the Android app you can sign in with Google, if you want, and keep a copy in a private file in your own Google Drive. Export still makes a file you hold yourself. If a diary saved on the phone cannot be read, the Android app keeps it and does not replace it. Importing a backup there keeps the newer copy of each day.
Using Rhyvia in a browser? That page keeps the diary in that browser on that device. It does not sync to Drive. Clearing the browser's site data can remove the diary, so export a backup when you want one.
Join the beta
Rhyvia is heading to the Google Play Store, and Google requires new apps to be tested by real users first. That's where you come in: beta testers get the app through the official Play Store testing programme and help shape it before release.
Leave the email address you use for Google Play (usually your Gmail), and you'll receive an invitation link to install Rhyvia like any other Play Store app. The ask is simple: use it daily for a couple of weeks — under a minute a day — and share what's confusing, what's missing, and whether the patterns ring true.
Want to start now? Use the browser diary with no installation. It keeps entries on that device, and it is an earlier copy of the diary. The current Android beta is version 1.40. Experienced Android users can download rhyvia-beta.apk. Android will show a warning because it comes from outside Google Play.
Why I made Rhyvia
I built Rhyvia for myself because I wanted something simple enough to use every day, detailed enough to reveal patterns over time, and private enough for deeply personal health information.
I'm sharing it in case it helps someone else arrive at an appointment with a clearer picture of what has actually been happening — not just what they can remember in the moment.
— Lis, Rhyvia's maker and first user
Rhyvia is a personal tracking tool, not a medical device, and nothing it shows constitutes medical advice. If symptoms concern you, speak to a doctor — your Rhyvia patterns can make that conversation more productive.