# Interval Timer X Workout Timer vs HIIT Workout Timer by Zafapp

The clearest difference is review sentiment: Interval Timer X Workout Timer at 94% against HIIT Workout Timer by Zafapp's 40%. Interval Timer X Workout Timer also leads on ratings volume (686 vs 15) and rating (4.8 vs 4.5). HIIT Workout Timer by Zafapp's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads, 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 HIIT Workout Timer by Zafapp sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Interval Timer X Workout Timer holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Interval Timer X Workout Timer has 686 ratings behind it against 15, 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 40% of HIIT Workout Timer by Zafapp's.

Interval Timer X Workout Timer ships an update every 6 weeks, HIIT Workout Timer by Zafapp every 3 weeks. The most recent releases landed on September 29, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Interval Timer X Workout Timer | HIIT Workout Timer by Zafapp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (686 ratings)](https://appshunter.io/ios/app/interval-timer-x-workout-timer/id1448144846/reviews)** | [4.5 (15 ratings)](https://appshunter.io/ios/app/hiit-workout-timer-by-zafapp/id1502215429/reviews) |
| Number of ratings | **686** | 15 |
| Positive reviews | **93.7% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 45 MB | 96 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [世恬 颜](https://appshunter.io/developer/1448144845) | [Cuneyt Zafer](https://appshunter.io/developer/1183636133) |

## 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


### HIIT Workout Timer by Zafapp

[App page](https://appshunter.io/ios/app/hiit-workout-timer-by-zafapp/id1502215429)

This app helps you create custom interval training routines with adjustable sets, rounds, and exercise times. It also tracks your workout history, calculates calorie burn, and integrates with Apple Watch for heart rate monitoring and workout control.

**Highlights:** Custom interval timers (HIIT, Tabata), Reps and weight logging, Workout routine planner, Calorie burn calculation, Workout history and analysis, Apple Watch integration, Background music control

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |
| Pro Version | $10.99 | one-time |
| Pro Version | $11.99 | 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 HIIT Workout Timer by Zafapp free?

HIIT Workout Timer by Zafapp is free to download, with in-app purchases available.

### Which has better reviews, Interval Timer X Workout Timer or HIIT Workout Timer by Zafapp?

Interval Timer X Workout Timer is rated higher. Interval Timer X Workout Timer averages 4.8 out of 5 from 686 ratings, while HIIT Workout Timer by Zafapp averages 4.5 from 15 ratings.

### Do Interval Timer X Workout Timer or HIIT Workout Timer by Zafapp have ads?

Both Interval Timer X Workout Timer and HIIT Workout Timer by Zafapp show ads.

### Which is updated more often, Interval Timer X Workout Timer or HIIT Workout Timer by Zafapp?

Interval Timer X Workout Timer ships an update every 6 weeks, and HIIT Workout Timer by Zafapp every 3 weeks. Most recently, Interval Timer X Workout Timer was updated on September 29, 2026 and HIIT Workout Timer by Zafapp on August 23, 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.*