Comparison

30 Day Butt Workout Challenge vs Interval Timer for Apple Watch

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

Head to head
About

30 Day Butt Workout Challenge

This app offers a structured 30-day glute and lower-body fitness program designed for women. It provides guided video workouts, toning exercises, and diet plans to help users achieve a firmer, lifted, and beautifully shaped physique without needing a gym.

Highlights
  • 30-day glute and butt lift challenge
  • Expert glute workouts for all levels
  • Video and image exercise instructions
  • Lower-body and body toning programs
  • 5 diet plans for better results
  • Water reminder
  • Apple HealthKit integration
Features
Read full description

Thirty days. A few minutes a day. A core that feels stronger every time you sit up, stand tall or pick something up. 30 Day Ab Workout Challenge gives you one clear plan for strong abs at home. Each day shows you the moves, the reps and the rest. You just follow along. It starts easy. Then it gets harder a few reps at a time, so by week three you're doing things that felt impossible on day one. HOW IT WORKS Pick your level: beginner, intermediate or advanced. Each day mixes crunches, planks, leg raises, mountain climbers and twists that work your upper abs, lower abs, obliques and deep core. Rest days are built in. AN HONEST NOTE ON BELLY FAT No ab exercise burns fat from one spot. What works is a strong core plus a little less body fat overall. That's why the challenge comes with meal plans, so the work you put in actually shows. WHAT'S INSIDE Daily ab and core workouts for every level A demo for every exercise so your form stays right Workout calendar and daily reminders Weight tracking and before and after photos 5 meal plans: vegetarian, vegan, Mediterranean, keto and Atkins Water reminders and Apple Health sync No equipment, just a bit of floor space FOR WOMEN AND MEN Whether you want a flat stomach or a visible six pack, the plan is the same: show up daily, keep good form, eat well. The app takes care of the first two. BEFORE YOU START Please check with your doctor before starting any new exercise program, especially if you are pregnant, injured or new to training. SUBSCRIPTION Your first workouts are free. To unlock every level, the full 30 day plan, meal plans and the progress tracker, choose a plan: Weekly: $1.99 per week Yearly: $29.99 per year (about $0.58 a week) Payment is charged to your Apple ID when you confirm the purchase, or when the free trial ends. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. You can manage or cancel anytime in your App Store account settings. Any unused part of a free trial is forfeited when you buy a subscription. Privacy Policy: https://www.lauruss.com/app/policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Interval Timer for Apple Watch

This minimalist timer app helps you manage exercise and rest periods for effective workouts. Customize intervals, stay on track with timely notifications, and focus on your fitness goals with its clean interface.

Highlights
  • Quick timer setup
  • Customizable intervals
  • Rest period notifications
  • Minimalist user interface
  • Native iOS development
Features
Read full description

Take control of your fitness routine with Timestro—the minimalist timer app designed for both gym enthusiasts and home workout fans. Simplify your workouts by effortlessly tracking exercise and rest periods, so you can focus on achieving your goals. FEATURES: • Quick Timer Setup: Start your workouts without delay. Set up your exercise and rest intervals in seconds. • Train at Your Pace: Customize timers to match your training style, whether it's high-intensity intervals or steady-paced sets. • Avoid Overdue Rest: Stay disciplined with timely notifications that keep your rest periods on track. • Minimalistic UI: Navigate with ease through a clean and user-friendly interface designed to eliminate distractions. • Native iOS Development: Enjoy a smooth and seamless experience tailored specifically for your iPhone. WHO IS TIMESTRO FOR? • Gym-goers looking to optimize their workout time. • Home fitness enthusiasts seeking a simple timing solution. • Anyone aiming to boost productivity in their training sessions. WHY CHOOSE TIMESTRO? Unlike complex fitness apps overloaded with unnecessary features, Timestro offers a straightforward and efficient tool to enhance your workouts. Its minimalist design and ease of use set it apart, providing exactly what you need without any hassle. MAKE EVERY SECOND COUNT Download Timestro today and elevate your fitness journey by keeping perfect time with every rep and rest. Privacy Policy: https://decorous-hound-27e.notion.site/Timestro-Terms-Privacy-1301becbbe83803db0bcc50298f3d456 Terms of Service: https://decorous-hound-27e.notion.site/Timestro-Terms-Privacy-1301becbbe83803db0bcc50298f3d456

Screenshots

30 Day Butt Workout Challenge4 screens
Interval Timer for Apple Watch4 screens

Verdict

The call

The clearest difference is monetization model: Interval Timer for Apple Watch at freemium against 30 Day Butt Workout Challenge's subscription. Interval Timer for Apple Watch also leads on update cadence (every 8 days vs every 2 months) and rating (5.0 vs 4.6). 30 Day Butt Workout Challenge's advantage is ratings volume (1.2K vs 5) and iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support 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. 30 Day Butt Workout Challenge sells 10 in-app purchases, starting at $0.99 per 7 days and Interval Timer for Apple Watch sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Interval Timer for Apple Watch holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: 30 Day Butt Workout Challenge has 1.2K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 78% of 30 Day Butt Workout Challenge's written reviews are positive against 100% of Interval Timer for Apple Watch's.

UpkeepUpdate frequency

30 Day Butt Workout Challenge ships an update every 2 months, Interval Timer for Apple Watch every 8 days. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

Scorecard6 real differences · 4 level
30 Day Butt Workout Challenge versus Interval Timer for Apple Watch: the parameters behind the verdict, then further details
Parameter30 Day Butt Workout ChallengeInterval Timer for Apple Watch
PriceFreeFree
Rating4.6 (1.2K ratings)5.0 (5 ratings) — better
Positive reviews77.8% of reviews100.0% of reviews — better
Number of ratings1.2K — better5
Update frequencyEvery 2 monthsEvery 8 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.0 — better18.0
Further details — not scored
Size60 MB64 MB
Age rating4+4+
DeveloperRumbleVladyslav Lietun

Customer experience

30 Day Butt Workout Challenge

All ratings1,164 ratings
Positive90.8%
Neutral4.4%
Negative4.8%
Written reviews54 reviews
Positive77.8%
Neutral7.4%
Negative14.8%

Interval Timer for Apple Watch

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

30 Day Butt Workout Challenge

Reported bugs

2 issues
  • App crashes on opening
  • Workout progress resets unexpectedly

Requested features

3 requests
  • Pause/resume functionality
  • Music playback support
  • Customizable workout plans

Interval Timer for Apple Watch

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

30 Day Butt Workout Challenge

Subscriptions9
  • Butt Challenge Weekly3 Days trial$0.997 Days
  • Weekly Subscription$0.997 Days
  • Butt Monthly$1.991 Month
Show 6 more
  • Weekly Subscription$1.997 Days
  • 30 Day Butt Challenge (Weekly)3 Days trial$2.997 Days
  • Monthly Subscription$5.991 Month
  • 30 Day Ab Challenge (Monthly)3 Days trial$8.991 Month
  • Yearly Plan7 Days trial$29.991 Year
  • Bikini body challenge7 Days trial$37.996 Months
One-time1
  • Butt Challenge Life Time$39.99
5 purchases

Interval Timer for Apple Watch

Subscriptions3
  • Timestro Pro - Monthly$1.991 Month
  • Timestro Pro - Yearly3 Days trial$11.991 Year
  • Timestro Pro - Yearly3 Days trial$17.991 Year
One-time2
  • Timestro Pro$11.99
  • Timestro Pro$17.99

Questions

Is 30 Day Butt Workout Challenge free?
30 Day Butt Workout Challenge is free to download, with in-app purchases available.
Is Interval Timer for Apple Watch free?
Interval Timer for Apple Watch is free to download, with in-app purchases available.
Which has better reviews, 30 Day Butt Workout Challenge or Interval Timer for Apple Watch?
Interval Timer for Apple Watch is rated higher. 30 Day Butt Workout Challenge averages 4.6 out of 5 from 1.2K ratings, while Interval Timer for Apple Watch averages 5.0 from 5 ratings.
Do 30 Day Butt Workout Challenge or Interval Timer for Apple Watch have ads?
Neither 30 Day Butt Workout Challenge nor Interval Timer for Apple Watch shows ads.
Which is updated more often, 30 Day Butt Workout Challenge or Interval Timer for Apple Watch?
30 Day Butt Workout Challenge ships an update every 2 months, and Interval Timer for Apple Watch every 8 days. Most recently, 30 Day Butt Workout Challenge was updated on October 25, 2026 and Interval Timer for Apple Watch on October 22, 2026.

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