Comparison

MyDays X vs CorrLinks

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

Head to head
About

MyDays X

This app helps women track their menstrual cycles, predict fertile days, and monitor various health symptoms. It offers intelligent notifications, a community chat, and detailed tracking options for a comprehensive overview of reproductive health.

Highlights
  • Period and ovulation prediction
  • Fertile day tracking
  • Symptom and mood logging
  • Pregnancy mode
  • Community chat
  • Birth control tracking
  • Password lock
Features
Read full description

MyDays X - The Original Period & Ovulation Calendar to track your Cycle Days -- I love it — Really! Congratulations! Out of 100,000+ apps, MyDays X has been selected by leading doctors as a top health app. Based on its medical accuracy, its utility in supporting health or healthy living goals, and usability, MyDays X has received the award from HealthTap AppRx Top Health and Medical Apps reports. *** MyDays X predicts your fertile days and your next periods *** • ""Intelligent Notifications"" based on your Location and Time • Great Community Chat to share your Experience with other Users • Pregnancy Mode • Track more than 20 Symptoms and remember your Breast Self examination • Optional manual entry of your Ovulation days and next period prediction • Track when you had sex (how often, protected/unprotected) • Keep an eye on your blood flow and mood. • embedded eMail support for your cycle History to your doctor • Backup/Restore via MyDays Cloud Backup, Email or WiFi MyDays X - Period & Ovulation Calendar is the simplest way to track your female data. • NuvaRing and any other birth Control based on Insert/Remove after x Days • Partneremail, email your Partner how u felt in the last days and whats coming next • Disable Daily Options, for example for kids or when you don't like to come pregnant Simpler, Better, More Features and the best Community • See the possible gender your baby may be • Track your Cervix position, openness, firmness & feeling • Track OPK Results (negative, fertile, peak/ovulation) • Visualize Moon-phases The new MyDays ROCKS! More innovative features than ever! • Password Lock for your Security • Add the actual cycle day to the calendar days • Disable the predictions for period or ovulation on the calendar • Filter what you like to see in your History List (eg. only Data from 2014) • Multi User (track yourself, your daughter or close friend) 
 • Create your own Calendar Themes! 
 • Add text notes - remember if you took your pill • Overwrite the predicted ovulation with your manual set day • Adjustable Luteal phase • Option to see old predictions 
 • Reset preferences and data should you lost overview • Rename Symptoms Fields for your Needs • Get an overview by Chart for your temperature (BMT) and weight measures • Choose the start day of the week • Cycle and Period Length can be calculated automatically • Unit Measures in Kg/Lbs/Stone Celsius/Fahrenheit 
 • More than 20 Languages ---------------------------------------- MyDays, the easy tracking & prediction calendar for your period, ovulation and fertility. -------- 
Remember: 
MyDays does pinpoint the 'high fertile' days. However, you can become pregnant also on other days! Usage is your own responsibility. For more Help & Hint, see Preferences -> About -> Visit MyDays - Homepage -------- • It's totally FREE with advertising, or you can use one of our subscriptions to go completely AD FREE and enable PRO mode. MyDaysX TERMS OF USE can we found at link below: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CorrLinks

Connect with incarcerated loved ones through a secure electronic messaging system. Receive real-time alerts for new messages and enjoy faster message downloads. This service requires a paid subscription to use.

Highlights
  • Real-time message alerts
  • Faster message downloads
  • Eliminates mobile login
  • Retain messages for 60 days
  • Attach up to 3 mobile devices
  • Eliminates Captcha
Read full description

CorrLinks is a way for family and friends to electronically communicate with their loved ones incarcerated in institutions. Established through a relationship between a corrections agency and ATG, this system allows family and friends to subscribe to CorrLinks services. Currently all Federal Bureau of Prisons, US Navy Brig (Charleston and Miramar), and Department of Corrections (DOC) for the States of Iowa, Maine, Massachusetts, Nevada, and Wisconsin institutions allow such communication. Note: To use this app, you must have a paid Premier Account subscription. The app has the following features: Stay in contact with your loved ones with real time alerts. Receive immediate push notifications to your device every time you receive a new message! Eliminates login on a mobile device! Messages downloaded significantly faster! Messages previously read are in your inbox and don’t need to be downloaded again! Retain messages on your device for 60 days – server still only keep 30 day. Attach up to 3 mobile devices to your account! Eliminates Captcha on the mobile app – making it much easier to interact. If you have issues with the app, please contact CorrLinks support at: https://www.corrlinks.com/en-US/help

Screenshots

MyDays X4 screens
CorrLinks4 screens

Verdict

The call

The clearest difference is monetization model: MyDays X at free with in-app purchases against CorrLinks's subscription. MyDays X also leads on review sentiment (54% vs 21%) and rating (3.2 vs 3.0). CorrLinks's advantage is ads (none vs shown). On price, ratings volume, 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. MyDays X sells 4 in-app purchases, starting at $7.99 per month and CorrLinks sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MyDays X holds the better App Store score, 3.2 against 3.0. Both are backed by a comparable volume of ratings — 759 and 814 respectively. Written reviews point the same way: 54% of MyDays X's written reviews are positive against 21% of CorrLinks's.

UpkeepUpdate frequency

MyDays X ships an update weekly, CorrLinks fortnightly. The most recent releases landed on October 30, 2026 and October 22, 2026 respectively.

Scorecard5 real differences · 5 level
MyDays X versus CorrLinks: the parameters behind the verdict, then further details
ParameterMyDays XCorrLinks
PriceFreeFree
Rating3.2 (759 ratings) — better3.0 (814 ratings)
Positive reviews53.8% of reviews — better20.5% of reviews
Number of ratings759814 — better
Update frequencyWeekly — betterFortnightly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size51 MB6 MB
Age rating12+4+
DeveloperChristian MuellerAdvanced Technologies Group, LLC.

Customer experience

MyDays X

All ratings756 ratings
Positive49.9%
Neutral10.2%
Negative39.9%
Written reviews502 reviews
Positive53.8%
Neutral9.2%
Negative37.1%

CorrLinks

All ratings813 ratings
Positive45.3%
Neutral9.8%
Negative44.9%
Written reviews151 reviews
Positive20.5%
Neutral12.6%
Negative66.9%

User reviews

MyDays X

From 759 App Store ratings

What we love

  • ⭐ Accurate period and ovulation tracking
  • 📆 Helpful for planning and conceiving
  • 💻 Easy to use and navigate
  • 🗓️ Customizable tracking options
  • 🔍 Detailed history and data insights

Room to improve

  • 💢 Excessive and intrusive ads
  • ⏱️ Long ad wait times disrupting usage
  • 🐛 Crashes and bugs after updates
  • 🔒 Privacy concerns with location tracking
  • 🔄 Difficulty transferring data to new devices

CorrLinks

From 814 App Store ratings

What we love

  • 🚀 Convenient communication
  • 👍 Easy to use
  • 💡 Helpful for staying in touch

Room to improve

  • 🐛 Sync and connectivity issues
  • ⏱️ Slow message delivery
  • 🔒 Lack of security/privacy
  • 💰 Paywall for basic features

Bugs and requests

MyDays X

Reported bugs

4 issues
  • App crashing on launch after updates
  • Calendar and data not syncing correctly
  • Inaccurate ovulation and period predictions
  • Inability to access historical data

Requested features

5 requests
  • Pregnancy mode to maintain data accuracy
  • Symptom tracking beyond just mood and weight
  • Improved ad-free or reduced ad experience
  • Better data export and backup options
  • Integration with health tracking platforms

CorrLinks

Reported bugs

3 issues
  • App crashes when composing messages
  • Unable to log in or access account
  • Notifications not working properly

Requested features

3 requests
  • Add photo/video sharing
  • Improve message threading and organization
  • Provide better customer support

In-app purchases

4 purchases

MyDays X

Subscriptions3
  • 1 Month Ad Free$7.991 Month
  • 3 months Ad free$19.993 Months
  • 1 Year Ad Free7 Days trial$29.991 Year
One-time1
  • Lifetime Ad free$79.99
2 purchases

CorrLinks

One-time2
  • Premier Access$8.99
  • $10 CorrLinks credit$13.99

Questions

Is MyDays X free?
MyDays X is free to download, with in-app purchases available.
Is CorrLinks free?
CorrLinks is free to download, with in-app purchases available.
Which has better reviews, MyDays X or CorrLinks?
MyDays X is rated higher. MyDays X averages 3.2 out of 5 from 759 ratings, while CorrLinks averages 3.0 from 814 ratings.
Do MyDays X or CorrLinks have ads?
MyDays X shows ads; CorrLinks does not.
Which is updated more often, MyDays X or CorrLinks?
MyDays X ships an update weekly, and CorrLinks fortnightly. Most recently, MyDays X was updated on October 30, 2026 and CorrLinks on October 22, 2026.

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