Comparison

Femira vs Red Diary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Femira

Features
Read full description

Femira is your intelligent companion for menstrual health. Track your period, predict ovulation, log symptoms, and get AI-powered insights — all with beautiful design and complete privacy. SMART CYCLE TRACKING • Accurate period predictions that improve over time • Cycle phase detection (period, follicular, ovulation, luteal) • Fertility window and ovulation day tracking • Beautiful cycle ring visualization on your home screen AI-POWERED HEALTH ASSISTANT • Ask anything about your cycle, symptoms, or wellness • Get personalized daily insights based on your cycle phase • Evidence-based health tips tailored to your body • Available in 55 languages COMPREHENSIVE DAILY LOGGING • Track 50+ symptoms across 8 categories • Mood tracking with emoji selector • Flow intensity logging • Notes and custom observations INSIGHTFUL ANALYTICS • Cycle length trend charts • Symptom frequency analysis • Mood distribution overview • Cycle-to-cycle comparisons PREGNANCY MODE • Week-by-week pregnancy tracking • Baby size comparisons • Milestone tracking and checklists • Trimester-specific health tips ADDITIONAL FEATURES • Water intake tracking • Basal body temperature (BBT) charting • Sleep and weight tracking • Medication reminders • Cervical mucus logging • Partner sharing • PDF cycle reports for your doctor • Home screen widget PRIVACY FIRST • All health data stored locally on your device • No data sold to third parties • AI messages are anonymized • Optional iCloud backup (end-to-end encrypted) Femira Premium unlocks unlimited AI chat, advanced analytics, pregnancy mode, data export, partner sharing, and more. Terms of Use: https://femira.app/terms Privacy Policy: https://femira.app/privacy

About

Red Diary

This app analyzes your symptoms, mood, energy, sleep, and activity to provide personalized insights and daily guidance tailored to your cycle phases. It offers a body weather forecast and smart recommendations for exercise, nutrition, and self-care.

Highlights
  • Personalized cycle insights
  • Smart daily guidance
  • Body weather forecast
  • Cycle tracking modes (fertility, pregnancy, birth control)
  • Symptom and mood logging
  • HealthKit integration
  • Apple Watch companion app
Features
Read full description

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

Screenshots

Femira4 screens
Red Diary4 screens

Verdict

The call

Femira and Red Diary are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Femira sells 2 in-app purchases, starting at $4.99 per month and Red Diary sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Femira versus Red Diary: the parameters behind the verdict, then further details
ParameterFemiraRed Diary
PriceFreeFree
Rating—5.0 (9 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—9 — better
Update frequency—Every 3 days
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS17.0 — better17.6
Further details — not scored
Size5 MB8 MB
Age rating12+12+
DeveloperPT BILLION JAYA GROUPRUBINS DORMEUS

In-app purchases

2 purchases

Femira

Subscriptions2
  • Monthly Premium$4.991 Month
  • Yearly Premium$39.991 Year
2 purchases

Red Diary

Subscriptions2
  • Premium Monthly7 Days trial$0.991 Month
  • Premium Annual$4.991 Year

Questions

Is Femira free?
Femira is free to download, with in-app purchases available.
Is Red Diary free?
Red Diary is free to download, with in-app purchases available.
Do Femira or Red Diary have ads?
Neither Femira nor Red Diary shows ads.

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