Red Diary: Period Tracker
by RUBINS DORMEUS
· Health & Fitness
· Free
On the App Store since May 2026
· Data updated
Red Diary: Period Tracker is made and published by RUBINS DORMEUS. AppBrain is an independent app data site and isn't affiliated with RUBINS DORMEUS. The app name, icon, screenshots and description belong to RUBINS DORMEUS and are shown as published on the App Store.
AppBrain's verdict
- Rating on App Store
- 5.00
- 9 ratings
- Last updated
- August 27, 2026
It doesn't have enough ratings yet to judge what users think.
Rankings
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Releases
Updates seen on the App Store- Version
- 2.2
- Launched
- May 2026
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 7.75 MB
- Content rating
- Medium
Technologies used by Red Diary: Period Tracker
About the app and developer
About Red Diary: Period Tracker
Red Diary: Period Tracker is a health & fitness app developed by RUBINS DORMEUS.
User Ratings
Red Diary: Period Tracker is rated 5.00 out of 5 stars. The rating is based on 9 ratings.
App Information
Red Diary: Period Tracker is freely available from the App Store. The app size is 7.75 MB. The latest version available is 2.2. The last update was on August 27, 2026.
Technical Requirements
The app has a content rating of Medium Maturity. The app has been available on the App Store since May 2026.
Developer information for RUBINS DORMEUS
Address:
Store listing
By RUBINS DORMEUS, from the App Store
Screenshots by RUBINS DORMEUS, from the the App Store listing
Description by RUBINS DORMEUS Written by the developer, not by AppBrain. Click to read.
A period and cycle tracker that keeps your data on your phone. No account. No cloud. No tracking. No ads.
Most period apps send your most private information to their servers. Red Diary doesn't have servers.
Free to track your cycle, log symptoms, and get predictions — no trial, no card, no expiry. Premium unlocks the fertility, pregnancy, and insight modes.
PRIVATE BY DESIGN
Your cycle history, symptoms, and intimate details never leave your device. There is no account to create, no server to breach, and no company reading your data. Export anytime for a doctor's visit or your own backup — it's your information.
BUILT FOR REAL CYCLES, NOT AVERAGE ONES
Most trackers assume a textbook 28 days and get confused when yours doesn't cooperate. Red Diary reads each cycle on its own terms, so irregular, long, short, and changing cycles are understood instead of flagged as wrong.
BODY WEATHER
Your own forecast, built from your own logs. Red Diary looks for patterns across your history and tells you what today has tended to look like for you — sunny, clear, mixed, overcast, or stormy. If it doesn't have enough history to say something true, it tells you that instead of guessing.
WHAT SHOULD I DO TODAY?
Every time you open the app, you get an answer. Phase-aware guidance for movement, food, and rest that shifts as your body does.
FOUR MODES
Track My Cycle — phase-by-phase analytics and predictions
Trying to Conceive — fertile window, peak day, cycle health, and support through the two-week wait
Avoid Pregnancy — honest fertility status, including the days it can't be certain about
I'm Pregnant — 40 weeks of content, kick counter, appointments, and trimester insights
Switch whenever life changes. The app changes with you.
A CALENDAR THAT ACTUALLY WORKS
Start and end your period with one tap, right from the calendar. Backdate cycles you missed. Log intercourse. See period, predicted, fertile, and logged days at a glance — with moon phases, if you like tracking alongside them.
WHY YOU FEEL LIKE THIS
Log symptoms, mood, sleep, temperature, and more. Red Diary finds what repeats across your cycles and explains what's behind it, instead of just recording it.
SHARE HOW YOU FEEL
Send a phase-aware note to a partner, a friend, or your birth control buddy through iMessage, WhatsApp, or anywhere else. No accounts, on either end.
ON YOUR WRIST
Cycle day, phase, and progress ring on your watch face in phase-matched colors. Start or end your period, log your mood, and get guidance without reaching for your phone.
APPLE HEALTH
Steps, calories, exercise, and sleep flow in automatically. See how your energy and activity really shift across your cycle — no extra logging.
BIRTH CONTROL REMINDERS
Pill, patch, ring, shot, IUD, or implant. On-time reminders, streak tracking, and insights that adapt to your method.
WHAT'S PREMIUM
Trying to Conceive, Avoid Pregnancy, and Pregnancy modes, Body Weather, full cycle insights, fertility analytics, and mood sharing.
Cycle tracking, logging, predictions, calendar, and birth control reminders are free and stay free.
Privacy Policy: https://dormeusapps.com/reddiary-privacy.html
Terms of Use: https://dormeusapps.com/reddiary-terms.html
Most period apps send your most private information to their servers. Red Diary doesn't have servers.
Free to track your cycle, log symptoms, and get predictions — no trial, no card, no expiry. Premium unlocks the fertility, pregnancy, and insight modes.
PRIVATE BY DESIGN
Your cycle history, symptoms, and intimate details never leave your device. There is no account to create, no server to breach, and no company reading your data. Export anytime for a doctor's visit or your own backup — it's your information.
BUILT FOR REAL CYCLES, NOT AVERAGE ONES
Most trackers assume a textbook 28 days and get confused when yours doesn't cooperate. Red Diary reads each cycle on its own terms, so irregular, long, short, and changing cycles are understood instead of flagged as wrong.
BODY WEATHER
Your own forecast, built from your own logs. Red Diary looks for patterns across your history and tells you what today has tended to look like for you — sunny, clear, mixed, overcast, or stormy. If it doesn't have enough history to say something true, it tells you that instead of guessing.
WHAT SHOULD I DO TODAY?
Every time you open the app, you get an answer. Phase-aware guidance for movement, food, and rest that shifts as your body does.
FOUR MODES
Track My Cycle — phase-by-phase analytics and predictions
Trying to Conceive — fertile window, peak day, cycle health, and support through the two-week wait
Avoid Pregnancy — honest fertility status, including the days it can't be certain about
I'm Pregnant — 40 weeks of content, kick counter, appointments, and trimester insights
Switch whenever life changes. The app changes with you.
A CALENDAR THAT ACTUALLY WORKS
Start and end your period with one tap, right from the calendar. Backdate cycles you missed. Log intercourse. See period, predicted, fertile, and logged days at a glance — with moon phases, if you like tracking alongside them.
WHY YOU FEEL LIKE THIS
Log symptoms, mood, sleep, temperature, and more. Red Diary finds what repeats across your cycles and explains what's behind it, instead of just recording it.
SHARE HOW YOU FEEL
Send a phase-aware note to a partner, a friend, or your birth control buddy through iMessage, WhatsApp, or anywhere else. No accounts, on either end.
ON YOUR WRIST
Cycle day, phase, and progress ring on your watch face in phase-matched colors. Start or end your period, log your mood, and get guidance without reaching for your phone.
APPLE HEALTH
Steps, calories, exercise, and sleep flow in automatically. See how your energy and activity really shift across your cycle — no extra logging.
BIRTH CONTROL REMINDERS
Pill, patch, ring, shot, IUD, or implant. On-time reminders, streak tracking, and insights that adapt to your method.
WHAT'S PREMIUM
Trying to Conceive, Avoid Pregnancy, and Pregnancy modes, Body Weather, full cycle insights, fertility analytics, and mood sharing.
Cycle tracking, logging, predictions, calendar, and birth control reminders are free and stay free.
Privacy Policy: https://dormeusapps.com/reddiary-privacy.html
Terms of Use: https://dormeusapps.com/reddiary-terms.html