# Interval Timer X Workout Timer vs Core

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.

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.

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.

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.

## The numbers

| Metric | Interval Timer X Workout Timer | Core |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (691 ratings)](https://appshunter.io/ios/app/interval-timer-x-workout-timer/id1448144846/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/core-interval-and-hiit-timer/id1562215374/reviews)** |
| Number of ratings | **691** | 4 |
| Positive reviews | 93.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 33 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 45 MB | 9 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [世恬 颜](https://appshunter.io/developer/1448144845) | [Yating Lu](https://appshunter.io/developer/1526204219) |

## What reviewers say

### Interval Timer X Workout Timer

[App page](https://appshunter.io/ios/app/interval-timer-x-workout-timer/id1448144846)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer X Premium | $6.99 | one-time |

**What reviewers like**

- 🚀 Interval timer
- 👍 Easy to use
- 👍 Customizable
- 👍 Useful for workouts
- 👍 Reliable

**What reviewers complain about**

- 💰 Ads in free version
- 🐛 Occasional bugs or crashes

**Reported bugs**

- Interval set index display issue
- Compatibility issues with older devices

**Requested features**

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


### Core

[App page](https://appshunter.io/ios/app/core-interval-and-hiit-timer/id1562215374)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |
| Lifetime | $14.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*