Custom Interval Timers vs Core
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Custom Interval Timers
Design personalized interval timers for workouts or productivity. Its intuitive editor allows for custom flows with various settings like countdowns and personalized interfaces. Offers light/dark modes and an option to disable ads.
- Customizable interval flows
- Intuitive timer editor
- Count up or down timers
- Personalized running interface
- Light/dark mode
- Ad-free option
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Create highly customizable interval timers in a beautiful Interface. Interval timers are useful for exercise, like High-intensity interval training (HIIT) or Tabata, and can also be used to manage productivity, events, and more! This app provides a fascinatingly simple and intuitive editor for setting up your own custom timers. With just a few building blocks you can create the exact experience you want. Multiple settings to match your preferences: - Count up or down - Personalize the running interface to show what matters to you - Light/dark mode - Disable ads for free!
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!
Screenshots
Verdict
The clearest difference is in-app purchases: Custom Interval Timers at none against Core's 3. Custom Interval Timers also leads on update cadence (every 4 months vs every 33 months) and ratings volume (14 vs 4). Core's advantage is ads (none vs shown). On price, rating, review sentiment 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
Both are free to download. Core sells 3 in-app purchases, starting at $1.99 per month. Custom Interval Timers asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Custom Interval Timers against 5.0 for Core. Both are backed by a comparable volume of ratings — 14 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Custom Interval Timers ships an update every 4 months, Core every 33 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.
| Parameter | Custom Interval Timers | Core |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (14 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 14 — better | 4 |
| Update frequency | Every 4 months — better | Every 33 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Alex Rich | Yating Lu |
Customer experience
Custom Interval Timers
Core
In-app purchases
Custom Interval Timers
No in-app purchases
Core
- Monthly$1.991 Month
- Yearly$9.991 Year
- Lifetime$14.99
Questions
Is Custom Interval Timers free?
Is Core free?
Which has better reviews, Custom Interval Timers or Core?
Do Custom Interval Timers or Core have ads?
Which is updated more often, Custom Interval Timers or Core?
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