Core vs Interval Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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!
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.
- Custom interval timers
- Voice or beep cues
- Background operation
- Customizable countdown
- Stopwatch and countdown timer
- Dark and light mode
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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
Verdict
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
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.
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.
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.
| Parameter | Core | Interval Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.9 (143 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 | 143 — better |
| Update frequency | Every 33 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 9 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Yating Lu | Duleep Madusanka |
Customer experience
Core
Interval Timer
In-app purchases
Core
- Monthly$1.991 Month
- Yearly$9.991 Year
- Lifetime$14.99
Interval Timer
- Interval Timer (Monthly)$2.991 Month
- Interval Timer (Lifetime)$14.99







