Comparison

Core vs Interval Timer

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

Head to head
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!

About

Interval Timer

Create personalized workout timers for HIIT, Tabata, and circuit training. Customize intervals, choose voice or beep cues, and run timers in the background with music. Includes a stopwatch and countdown timer for versatile fitness tracking.

Highlights
  • Custom interval timers
  • Voice or beep cues
  • Background operation
  • Customizable countdown
  • Stopwatch and countdown timer
  • Dark and light mode
Features
Read full description

Maximize your workout routine with our Interval Timer – the ultimate tool for creating personalized timers that cater to your fitness needs. Whether you’re doing circuit training or HIIT, our timer provides full customization options to ensure you achieve your fitness goals with ease. ◆ FEATURES ◉ Create custom interval timers ◉ Start your interval timers with just one ◉ Voice or beep sounds for every workout ◉ Customizable initial countdown ◉ Countdown timer for none-interval workouts ◉ Dedicated stopwatch ◉ Supports dark and light mode ◉ Works in the background - great with headphones and your music. ◆ SPEAKS | BEEPS Know the resting and training times with the loud voice or beep sounds. Don’t want any sounds? Choose the silent mode and watch the time on the screen by enabling prevent auto-lock feature. ◆ RUNS IN THE BACKGROUND Interval Timer can run its timers in the background allowing you to have your screen off or use other apps, and you can always access them whenever you want. We believe that eliminating restrictions and making the process smoother can deliver a much better and more cohesive experience every time. ◆ GO SIMPLE Make use of a classic stopwatch and countdown timer. Track your runs, overall workout time, PRs, and more. ► Get this interval timer to make your workouts even more effective! EULA: https://dmwizards.com/interval-timer-terms-and-conditions

Screenshots

Core4 screens
Interval Timer4 screens

Verdict

The call

The clearest difference is update cadence: Interval Timer at every 3 weeks against Core's every 33 months. Interval Timer also leads on ratings volume (143 vs 4). Core's advantage is iOS requirement (15.0 vs 18.0). On price, rating, review sentiment and ads 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. Core sells 3 in-app purchases, starting at $1.99 per month and Interval Timer sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Core against 4.9 for Interval Timer. That said, the two scores are not equally well evidenced: Interval Timer has 143 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Core ships an update every 33 months, Interval Timer every 3 weeks. The most recent releases landed on October 30, 2026 and October 20, 2026 respectively.

Scorecard3 real differences · 7 level
Core versus Interval Timer: the parameters behind the verdict, then further details
ParameterCoreInterval Timer
PriceFreeFree
Rating5.0 (4 ratings) — better4.9 (143 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings4143 — better
Update frequencyEvery 33 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size9 MB6 MB
Age rating4+4+
DeveloperYating LuDuleep Madusanka

Customer experience

Core

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

Interval Timer

All ratings142 ratings
Positive97.9%
Neutral0.7%
Negative1.4%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Core

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

Interval Timer

Subscriptions1
  • Interval Timer (Monthly)$2.991 Month
One-time1
  • Interval Timer (Lifetime)$14.99

Questions

Is Core free?
Core is free to download, with in-app purchases available.
Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Which has better reviews, Core or Interval Timer?
Core is rated higher. Core averages 5.0 out of 5 from 4 ratings, while Interval Timer averages 4.9 from 143 ratings.
Do Core or Interval Timer have ads?
Neither Core nor Interval Timer shows ads.
Which is updated more often, Core or Interval Timer?
Core ships an update every 33 months, and Interval Timer every 3 weeks. Most recently, Core was updated on October 30, 2026 and Interval Timer on October 20, 2026.

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