Comparison

LADYTIMER Period Calendar vs Caerus Strength

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

Head to head
About

LADYTIMER Period Calendar

This app helps women track their menstrual cycles, predict ovulation, and manage reproductive health. It offers features like symptom tracking, fertility calendars, and reminders for important dates. Users can also securely share data with partners or doctors and benefit from automatic cloud backup.

Highlights
  • Period and ovulation tracking
  • Symptom and mood logging
  • Fertility calendar with temperature charts
  • Reminders for periods and exams
  • Secure data sharing
  • Cloud backup and sync
  • Intimacy and birth control reminders
Features
Read full description

Ladytimer Period Calendar tracks and predicts menstrual cycle days: * Easy to use period tracker * Ovulation calendar options: symptoms, moods, weight, etc * Period, Ovulation and medical exams reminders * Fertility calendar with temperature charts * Menstrual period history * Chat and Direct Messaging * Share calendar data with your doctor or partner * LadyCloud automatic backup and sync * Ovulation App is portable to any smartphone * Intimacy tracker * Birth control pill reminder * Ovulation calculator with cervical mucus tracker * Free Ovulation Calendar print option * Educational videos * A personal diary for every woman Simply track your start period day every month. After that the app calculates the menstrual cycle for you. Enter your morning body temperature for precise fertility tracking. The app will use it to calculate ovulation. Enter and track symptoms, moods, notes, weight, intimacy, ovulation tests, etc for any day. Chat with other Ladytimer users. Your period calendar data can be saved online and imported to any smartphone when needed. Never lose your data when switching phones. LadyCloud synchronization does it all automatically for you. It's very easy to share your period calendar with your doctor or partner. Chose the data you wish to share. — Ladytimer • the most advanced menstruation calendar —

About

Caerus Strength

Access personalized fitness programs, track your workout progress, and monitor your fitness journey. View coach messages, daily stats, and nutrition overviews, with Apple Health integration for steps and calories. Plan workouts, record progress, and access exercise guides with photos and videos.

Highlights
  • Personalized fitness programs
  • Workout progress tracking
  • Daily fitness statistics
  • Nutrition overview
  • Fitness calendar and planner
  • Exercise photos and videos
  • Workout timer and recording
Read full description

Caerus Strength allows clients to access fitness programs, record workout progress, and track their fitness journey. From the home page, view the messages from your fitness coach, view your daily fitness statistics, and see your daily nutrition overview. On this page, we also work with the Apple Health Kit to keep track of your steps and calories burned. From there, slide over one tab to the fitness calendar that will act as your daily workout planner. When your coach assigns you a fitness plan, asks you to weigh yourself, track your daily nutrition macros, or requests a progress photo - you’ll find that to-do list right here. Clicking on the workout for the day will take you right to the first exercise of your fitness program. Finally, you’ll spend most of your time in the Train tab. Here, you’ll have a full breakdown of your program week over week. See what days you need to train, the overview of exercises for that day, and then click into the plan to get started. Once you’re in a plan, you can simply swipe left through exercises to move throughout the program. At the bottom of each screen you’ll see a workout timer and the ability to record sets, reps, weight, and time. Each exercise comes with a photo & video so you’re never left in the dark when it comes to form on specific exercises. Recording your fitness programs in the program will help let your trainer know exactly how hard you’re working to achieve your fitness goals. Have a great day!

Screenshots

LADYTIMER Period Calendar4 screens
Caerus Strength4 screens

Verdict

The call

The clearest difference is price: Caerus Strength at Free against LADYTIMER Period Calendar's $4.99. Caerus Strength also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.8). LADYTIMER Period Calendar's advantage is ratings volume (9 vs 1). On update cadence, ads, device support and iOS requirement 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

Caerus Strength is free to download; LADYTIMER Period Calendar costs $4.99 up front. LADYTIMER Period Calendar sells 2 one-off in-app purchases. Caerus Strength asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Caerus Strength holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: LADYTIMER Period Calendar has 9 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
LADYTIMER Period Calendar versus Caerus Strength: the parameters behind the verdict, then further details
ParameterLADYTIMER Period CalendarCaerus Strength
Price$4.99Free — better
Rating4.8 (9 ratings)5.0 (1 ratings) — better
Positive reviews88.8% of reviews—
Number of ratings9 — better1
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size18 MB109 MB
Age rating4+9+
DeveloperVipos.comPerFIcT Inc.

Customer experience

LADYTIMER Period Calendar

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews205 reviews
Positive88.8%
Neutral2.0%
Negative9.3%

Caerus Strength

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

LADYTIMER Period Calendar

Reported bugs

13 issues
  • App crashes/freezes
  • App not opening
  • Data loss after updates
  • Password/login issues
  • Language settings not persisting
Show 8 more
  • Free version showing only last 10 days
  • Free version asking for PIN repeatedly
  • Data not importing from free to paid version
  • App stops working after purchase
  • App freezes at language selection
  • App not working after last update
  • App asking for backup constantly
  • App not responding to customer service

Requested features

12 requests
  • Sync with Apple Watch
  • Add medication tracking for fertility centers
  • Add pregnancy mode (mentioned as missing)
  • Allow two decimal places for temperature input
  • Add a daily summary of entries
Show 7 more
  • Add manual ovulation tracker function
  • Add a temperature curve drawing feature
  • Add delivery date calculation
  • Option to export data in xls
  • More background color options
  • Improve calendar layout (week starting Monday)
  • Add more detailed explanations for icons

Caerus Strength

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

LADYTIMER Period Calendar

One-time2
  • AI Assistant$1.99
  • AI Assistant$19.99
None

Caerus Strength

No in-app purchases

Questions

Is LADYTIMER Period Calendar free?
LADYTIMER Period Calendar costs $4.99, and also offers in-app purchases.
Is Caerus Strength free?
Caerus Strength is free to download, with no in-app purchases.
Which has better reviews, LADYTIMER Period Calendar or Caerus Strength?
Caerus Strength is rated higher. LADYTIMER Period Calendar averages 4.8 out of 5 from 9 ratings, while Caerus Strength averages 5.0 from 1 ratings.
Do LADYTIMER Period Calendar or Caerus Strength have ads?
Neither LADYTIMER Period Calendar nor Caerus Strength shows ads.
Which is updated more often, LADYTIMER Period Calendar or Caerus Strength?
LADYTIMER Period Calendar ships an update every 2 months, and Caerus Strength every 2 months. Most recently, LADYTIMER Period Calendar was updated on November 10, 2026 and Caerus Strength on November 3, 2026.

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