Menstrual Period Tracker Pro vs Killer Butt LE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Menstrual Period Tracker Pro
This app helps track menstrual cycles and predict ovulation. It offers detailed symptom tracking, body temperature logging, and integrates with Apple Health. The interface is user-friendly with customizable options and password protection.
- Automatic period prediction
- Menstrual cycle history
- Apple Health integration
- Symptom tracking
- Body temperature logging
- Ovulation day prediction
- Password protection
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We spent many years creating the best period and ovulation tracker. We implemented all features requested by our users and put a lot of heart into the app. Features: • Automatically predicts menstruation periods. • Keeps history of your menstrual cycles. • Full integratation with the Health app (uses HealthKit framework). • Spotlight Search: find your notes, symptoms or even the date of your next period. • Contains a native Apple Watch app. • Includes a Glance view for the Apple Watch. • Includes a Notification Center widget (extension). • Can track up to four different symptoms (e.g. migraine or abdominal pain). • Symptom names may be changed. • Calendar colors may be changed. • Can track body temperature (in Fahrenheit and Celsius degrees). • Displays basal body temperature charts. • Text notes (e.g. about period, taken medications, mood, friends) may be attached to each day. • Automatically predicts probable ovulation days. • The user interface is easy to use and looks good. • Password protection (if you forgot your password, please enter: passwordrecovery111). Why should you choose our application? • It has a modern and elegant look and is easy to navigate. • We constantly add new features and listen to you. • The application is universal: it works on all your iOS devices (e.g. iPhone, iPod Touch, iPad) and on your Apple TV.
Killer Butt LE
Achieve a sculpted, firm, and lifted posterior with short, daily workouts. This app offers customized routines, exercise videos, and audio guidance to help you reach your fitness goals anywhere, with or without equipment.
- 5-minute daily butt workouts
- Customized routines for all fitness levels
- Video and audio exercise guidance
- Over 25 unique exercises
- Workout anywhere, no equipment needed
- Interactive workout adjustments
- Syncs with Health app
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Shape, firm and lift your booty in only 5 minutes a day. With Killer Butt, you'll learn the secret moves to sculpt those hard-to-reach areas and get a butt that makes them look twice. Every workout is customized to your fitness level and to the equipment you have available. Each exercise includes an audio description to help walk you through the movement and a video you can view DURING YOUR WORKOUT, so you can always double-check your form. FEATURES • A complete leg and butt workout everyday. Strengthen and tone your butt and thighs quickly and easily. • Workouts customized for Beginner, Intermediate, and Advanced exercisers. • Over 25 unique exercises. Each one includes a video and audio description to help you perfect your form. • Works anywhere! You don't need any equipment to get a terrific workout. • lolo's beat-sync technology perfectly matches the tempo of your music to your workout. • Completely interactive. Swap out exercises to personalize your workouts. Increase or decrease the intensity at anytime and your trainer — and your music — will respond! • Sync your workouts to the Health app. • Compatible with most bluetooth heart rate monitors. If you like the FREE VERSION, CHECK OUT THE FULL VERSION to get: • Additional 10-minute and 15-minute workouts. • Nearly 50 additional exercises. • Equipment based exercises. Add stability balls, dumbbells, medicine balls, and more to your workouts to really turn up the intensity. Works with Health Compatible with Bluetooth Heart Rate Monitors
Screenshots
Verdict
The clearest difference is price: Killer Butt LE at Free against Menstrual Period Tracker Pro's $5.99. Killer Butt LE also leads on review sentiment (98% vs 81%) and iOS requirement (7.1 vs 15.6). Menstrual Period Tracker Pro's advantage is update cadence (every 2 months vs every 6 months) and ratings volume (15 vs 3). On rating, ads 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
Killer Butt LE is free to download; Menstrual Period Tracker Pro costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for Menstrual Period Tracker Pro against 4.7 for Killer Butt LE. That said, the two scores are not equally well evidenced: Menstrual Period Tracker Pro has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 81% of Menstrual Period Tracker Pro's written reviews are positive against 98% of Killer Butt LE's.
Menstrual Period Tracker Pro ships an update every 2 months, Killer Butt LE every 6 months. Both last shipped on November 1, 2026.
| Parameter | Menstrual Period Tracker Pro | Killer Butt LE |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.7 (15 ratings) | 4.7 (3 ratings) |
| Positive reviews | 80.7% of reviews | 98.3% of reviews — better |
| Number of ratings | 15 — better | 3 |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod, Apple TV — better | iPhone, iPod |
| Requires iOS | 15.6 | 7.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 129 MB |
| Age rating | 4+ | 4+ |
| Developer | EFRAC | lolo |
Customer experience
Menstrual Period Tracker Pro
Killer Butt LE
User reviews
Menstrual Period Tracker Pro
From 15 App Store ratingsWhat we love
- 👍 Easy to use
- 🎯 Accurate predictions
- 🗓️ Good for tracking cycles
- 💡 Helpful for doctors
- 📝 Useful for notes
Room to improve
- 💰 Expensive for some
- 🤔 Basic features for the price
- 🐛 Bugs and glitches
- ⚠️ Data loss issues
- ❓ Unclear interface/features
Killer Butt LE
From 3 App Store ratingsWhat we love
- 👍 Easy to use interface
- 💪 Effective workouts
- 🎶 Customizable music options
- 🗣️ Motivational instructor voice
- 🏠 Great for home workouts
Room to improve
- 🐛 Occasional software bugs
- 🐛 Video and voice sync issues
- 🐛 Freezing randomly
- 🐛 Double counting reps on one side
- 🐛 Cannot connect to save info
Bugs and requests
Menstrual Period Tracker Pro
Reported bugs
16 issues- App not working after iOS7 update
- Black screen on launch after update
- Unresponsive after update
- Notification icon always showing
- Unable to clear notifications
Show 11 moreShow fewer
- Data loss after updates
- Free app data not loading
- Paid app not loading
- Paid app not showing constructive cycle info
- Paid app not showing n/a for days to M/O
- Sync issues with Mac app
- Health app sync not working out of the box
- Free version deleted info after trial
- Purchased version deleted info
- Lost past data after update
- App crashes
Requested features
20 requests- Ability to sync between devices
- Due date calculator
- See actual number of days for each cycle
- Hide temperature on chart view
- Change 'took a pill' label
Show 15 moreShow fewer
- More symptom options
- In-built reminder and alarm system for fertile days
- Improved statistics consultation
- More slots for custom symptom names
- Hide unused features
- Add 'spotting' entry
- Clarify 'discharge' options
- Add 'breast soreness' option
- More visually appealing color choices for background
- Ability to color-code ovulation days differently
- Show future menstruation and ovulation dates on calendar
- Easier date editing for late/early periods
- Add pregnancy due date tracking
- More symptoms to choose from
- Ability to import data from free version
Killer Butt LE
Reported bugs
5 issues- Counting is way off
- Software freezes randomly
- Video and voice sync issues
- Double counted reps on one side and didn't switch
- Cannot connect to save info
Requested features
2 requests- More workout options
- Explanations on proper exercise technique
In-app purchases
Menstrual Period Tracker Pro
No in-app purchases
Killer Butt LE
No in-app purchases
Questions
Is Menstrual Period Tracker Pro free?
Is Killer Butt LE free?
Which has better reviews, Menstrual Period Tracker Pro or Killer Butt LE?
Do Menstrual Period Tracker Pro or Killer Butt LE have ads?
Which is updated more often, Menstrual Period Tracker Pro or Killer Butt LE?
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