Comparison

RedCalendar vs Period Tracker

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

Head to head
About

RedCalendar

Track your menstrual cycle, predict periods, and identify fertile days. This cloud-based diary allows for custom daily entries and syncs data even in airplane mode. Receive timely reminders for key cycle events.

Highlights
  • Menstruation prediction
  • Ovulation tracking
  • Fertile day identification
  • Customizable daily diary
  • Cloud-based data backup
  • Airplane mode functionality
  • Cycle analysis using median values
Read full description

Try our app for following your cycle: analysis and predictions for periods, ovulation and fertile days. We won’t ask you to rate your mood swings, drink water, or look at your step count and hours of sleep. But you can note anything you like about any day, if you want to yourself. The app is cloud-based: no need to think about backups or space in iCloud. If it comes to it, RedCalendar works in airplane mode too, so you can add your data and sync it later, once you’re back online. One account works on several devices, and you sign in with email. ANALYSIS AND PREDICTIONS We use the median of the data you enter to work out your cycle. It’s better than the average, and more honest than talk of artificial intelligence. The app adapts to you: cycle length and period length are refined from the cycles you’ve recorded most recently, and once you confirm a day of ovulation, it counts towards the prediction too. While there are only a few recorded cycles, the app keeps the values you set yourself. You can change them in settings at any time. EVERY DAY Any day opens with a tap right in the calendar. Mark the start and end of your period, note the flow, confirm ovulation or pick its day yourself, leave a comment. REMINDERS We send notifications at 9:00 and only when there’s a reason: 2 days before your cycle starts, a day after your period ends (in case you forgot to mark it), and 4 days before expected ovulation. If you’ve gone on holiday and your time zone has changed, just open the app — it takes care of the rest. Notifications are turned off with a single switch in settings. TAGS Use tags to add anything else about your day. Just pick one or several and keep track of workouts, mood or new habits. You can create and rename your own tags. STATISTICS If you want more numbers: cycle length, period length and your cycle history over 6 months, a year or all time. APPEARANCE Three accent colors and a dark theme.

About

Period Tracker

This app helps women track their menstrual cycles, predict ovulation, and monitor fertility. It offers customizable themes, data privacy features, and insights into PMS symptoms and overall wellness. Plan your life with accurate predictions and a secure, personalized experience.

Highlights
  • Period and ovulation prediction
  • Fertile window tracking
  • PMS symptom logging
  • Customizable themes
  • Data security and privacy
  • Cycle trend analysis
  • Health diary
Features
Read full description

Greetings from My Calendar – a simple but stylish period tracker for girls and women. With the support of this accurate period tracker, you can easily track period phases, and get notified before periods arrive. Pinpointing your ovulation day and fertile windows can never be easier. Learning about PMS symptoms, or monitoring hormone health – this all-in-one period calendar app can satisfy all your needs. Your well-being is important, and your menstrual journey is unique. As we value that, we have designed a variety of exquisite themes. Soothing watercolor styles, harmonious gradient colors, elegant flowery decorations, and more – You can change it at any time to suit your unique taste. Your Data, Your Choice. Our app allows you to use it without the need for registration or login. All your data is stored locally. Set an app lock and protect your privacy from inquisitive stares. Your data security is always our top priority. Key Features: Period and Ovulation Prediction and Reminders - Use the menstrual tracker to record past cycles to understand your own patterns. - Spot the timing of ovulation and your most fertile days for better family planning or period tracker birth control needs. - Customize reminder dates, times, and frequencies and receive future predictions. - Plan your life, work, and social activities accordingly for a more carefree lifestyle. PMS Symptoms and Daily Wellness Metrics - Log and track different symptoms and moods in the menstrual calendar with a built-in period mood tracker. - Gain insights into your body and emotional states and focus more on overall health. - Keep a menstrual diary as a health record that can be shared with healthcare providers. - Cultivate healthy lifestyle habits like regular weigh-ins and adequate water intake. Menstrual Cycle Trend Analysis - Track changes in cycle length and period durations in the cycle history. - Explore your patterns of period flow and symptoms in intuitive charts and reports. - Scientifically adjust your lifestyle based on intelligent analysis results. - Also works perfectly as an irregular period tracker, helping you identify trends even with unpredictable cycles. Customizable Themes - Choose from a diverse theme library based on your personal preferences. - Switch application interfaces to enjoy a fresh and pleasant user experience. Data Security & Privacy - Start using the application instantly without requiring account registration. - Store all the data on your local device. - Set a PIN to further enhance data security. - Transfer and restore data easily to prevent data loss. My Calendar is your trusted companion to guide you through each phase of life with confidence and convenience – from menstruacion to period tracker menopause. Download today and empower yourself with the best period tracker experience – one that’s not only simple and secure, but perfect for period tracker girls and even a period tracker for kids if needed.

Screenshots

RedCalendar4 screens
Period Tracker4 screens

Verdict

The call

The clearest difference is ads: RedCalendar at none against Period Tracker's shown. RedCalendar also leads on monetization model (free vs free with in-app purchases). Period Tracker's advantage is iOS requirement (12.0 vs 15.4). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RedCalendar ships an update every 3 months, Period Tracker every 6 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
RedCalendar versus Period Tracker: the parameters behind the verdict, then further details
ParameterRedCalendarPeriod Tracker
PriceFreeFree
Rating—4.9 (151 ratings) — better
Positive reviews100.0% of reviews — better96.1% of reviews
Number of ratings—151 — better
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.412.0 — better
Further details — not scored
Size9 MB43 MB
Age rating4+12+
DeveloperArtem BolotovPrutvi

Customer experience

RedCalendar

Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Period Tracker

All ratings134 ratings
Positive97.0%
Neutral1.5%
Negative1.5%
Written reviews102 reviews
Positive96.1%
Neutral1.0%
Negative2.9%

In-app purchases

None

RedCalendar

No in-app purchases

None

Period Tracker

No in-app purchases

Questions

Is RedCalendar free?
RedCalendar is free to download, with no in-app purchases.
Is Period Tracker free?
Period Tracker is free to download, with no in-app purchases.
Do RedCalendar or Period Tracker have ads?
Period Tracker shows ads; RedCalendar does not.
Which is updated more often, RedCalendar or Period Tracker?
RedCalendar ships an update every 3 months, and Period Tracker every 6 weeks. Most recently, RedCalendar was updated on October 29, 2026 and Period Tracker on October 30, 2026.

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