Comparison

Interval Timer X Workout Timer vs Core

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

Head to head
About

Interval Timer X Workout Timer

This versatile timer helps you structure workouts, manage daily tasks, and achieve fitness goals. Customize routines, track progress with visual cues, and stay motivated with customizable sounds. Ideal for HIIT, Tabata, yoga, and more.

Highlights
  • Customizable workout routines
  • Standalone interval timer/counter
  • Routine combination feature
  • Customizable warning sounds
  • Intuitive interface with dark mode
  • Background usage support
  • Workout summary and history
Features
Read full description

Crafted with precision and simplicity, this interval/workout timer is designed for individuals who want to take control of their daily routines and achieve optimal results. Whether you're looking to build a custom workout routine or streamline your daily tasks, this interval timer is the perfect tool to help you reach your goals. Interval Timer features: • Customizable Routines: Setting up and saving your own routines has never been easier with our customizable function. • Multiple Functions: For simpler routines, access standalone interval timer/counter functions that can track every aspect of your workout. • Combination of routines: By combining existing routings, the combination feature has got you covered for all your interval tracking needs. • Warning Sound Setting: Stay on track during your workout with a warning sound that can be customized for circuit training, boxing, sprints, and more. • Intuitive Interface: The interface is simple and attractive with light and dark modes available to suit your preferences. Large display and colored progress bars enable you to track your workout from a distance. • Landscape Mode: The landscape mode provides an optional main display and a full-screen progress bar, making it even easier to track your progress. • Alarm Sounds: Choose from multiple alarm sounds including beep, boxing bell, singing bowl, and voice, to stay motivated throughout your workout. • Background Usage: Our app works seamlessly even when running in the background or when background music is on. • Summary after workout: Get a clear and simple summary of your sets and time when your workout is finished. • Calendar and Notification Feature: Use the calendar and notification function to plan your workouts in advance. • History: Help you track and improve your workouts. • Multiple Languages: The app supports multiple voice languages to cater to our global user base. Interval Timer Premium Features: • Export and Import: Easily export and import your custom routines and calendar. • Unlimited Routine Combinations: The premium version offers unlimited routine combinations, so you can create and save as many custom routines as you like. • Advanced Timer Settings: With more custom timer settings, including preparation time, cycle interval time, warning sound time, sound type for each event, and the ability to add short notes, you can fully customize your workout to suit your individual needs. • Customizable Notifications: The premium version also allows you to customize notification titles and content. This Interval Timer app is the perfect tool for anyone looking to optimize their daily routine and achieve their goals, whether you're into physical exercise, workouts, yoga, or meditation. Here are just a few examples of how our app can benefit you: - Physical Exercise: Keep track of your gym workouts, interval running, CrossFit training, and more with ease. - HIIT and Tabata: The app is specifically designed to track high-intensity interval training and Tabata workouts, helping you stay on track and achieve your fitness goals. - Yoga and Meditation: Use the app to time your yoga sessions or meditation practice and stay focused and motivated throughout your practice. - Productivity: Stay focused during your study sessions, reading time, or cooking with our Pomodoro clock functionality. - Personal Routines: Whether you're looking to optimize your daily routine or create a custom interval training plan, our app has got you covered. Take your workouts to the next level and achieve your goals with the Interval Timer X Workout Timer app. Try it today and experience the benefits for yourself!

About

Core

This app helps you stay focused during workouts by managing intervals, work times, and rest periods with clear visual and audio cues. Save custom routines for HIIT, Tabata, or boxing, and track your training history to monitor progress.

Highlights
  • Customizable interval timers
  • Audio cues for work/rest phases
  • Save and reuse workout routines
  • Visual countdown and color coding
  • Workout history and trend tracking
  • Optional Pro features via in-app purchase
Features
Read full description

Keep your focus on the workout Core takes care of the intervals, so you can stay with your training. Set your work time, rest time and sets, then follow a clear countdown and audio cues from the first round to the last. Made for your routine Build a timer for HIIT, Tabata, circuit training or boxing rounds. Save your usual workouts and have them ready when it is time to train again. Know when to move and when to recover A large countdown and distinct work and rest colors make each phase easy to recognize at a glance. Choose audio cues that suit the way you train. See the work you have put in Revisit completed sessions and see your weekly training trends. Your training history gives every session a place beyond the final countdown. Go further with Core Pro Unlock unlimited timers and duplicates, full workout history, monthly and yearly trends, and CSV export. These features require an in-app purchase. Core Pro is optional. Available plans and prices are shown before purchase. If you choose an auto-renewable subscription, payment is charged to your Apple Account at confirmation. It renews automatically unless canceled at least 24 hours before the current period ends. Manage or cancel your subscription in your App Store account settings. Privacy policy: https://yating-900.github.io/core-timer-site/privacy.html Terms of use: https://yating-900.github.io/core-timer-site/terms.html If you have any ideas to improve the App, please contact us via coretimerapp@gmail.com. Your feedback is highly valued!

Screenshots

Core4 screens

Verdict

The call

The clearest difference is ads: Core at none against Interval Timer X Workout Timer's shown. Core also leads on rating (5.0 vs 4.8). Interval Timer X Workout Timer's advantage is update cadence (every 6 weeks vs every 33 months) and ratings volume (691 vs 4). On price, review sentiment, in-app purchases and monetization model 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. Interval Timer X Workout Timer sells 1 one-off in-app purchase and Core sells 3 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

Core holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Interval Timer X Workout Timer has 691 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 94% of Interval Timer X Workout Timer's written reviews are positive against 100% of Core's.

UpkeepUpdate frequency

Interval Timer X Workout Timer ships an update every 6 weeks, Core every 33 months. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Interval Timer X Workout Timer versus Core: the parameters behind the verdict, then further details
ParameterInterval Timer X Workout TimerCore
PriceFreeFree
Rating4.8 (691 ratings)5.0 (4 ratings) — better
Positive reviews93.7% of reviews100.0% of reviews — better
Number of ratings691 — better4
Update frequencyEvery 6 weeks — betterEvery 33 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size45 MB9 MB
Age rating4+4+
Developer世恬 颜Yating Lu

Customer experience

Interval Timer X Workout Timer

All ratings672 ratings
Positive95.1%
Neutral2.4%
Negative2.5%
Written reviews63 reviews
Positive93.7%
Neutral3.2%
Negative3.2%

Core

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Interval Timer X Workout Timer

Reported bugs

2 issues
  • Interval set index display issue
  • Compatibility issues with older devices

Requested features

4 requests
  • Audio ducking for music playback
  • Voice countdown
  • Ability to store custom settings automatically
  • Vibration option in addition to audio

Core

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Interval Timer X Workout Timer

One-time1
  • Interval Timer X Premium$6.99
3 purchases

Core

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$9.991 Year
One-time1
  • Lifetime$14.99

Questions

Is Interval Timer X Workout Timer free?
Interval Timer X Workout Timer is free to download, with in-app purchases available.
Is Core free?
Core is free to download, with in-app purchases available.
Which has better reviews, Interval Timer X Workout Timer or Core?
Core is rated higher. Interval Timer X Workout Timer averages 4.8 out of 5 from 691 ratings, while Core averages 5.0 from 4 ratings.
Do Interval Timer X Workout Timer or Core have ads?
Interval Timer X Workout Timer shows ads; Core does not.
Which is updated more often, Interval Timer X Workout Timer or Core?
Interval Timer X Workout Timer ships an update every 6 weeks, and Core every 33 months. Most recently, Interval Timer X Workout Timer was updated on October 22, 2026 and Core on October 30, 2026.

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