# Interval Timer vs HIIT

The clearest difference is review sentiment: HIIT at 57% against Interval Timer's 21%. HIIT also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (17.0 vs 26.0). Interval Timer's advantage is ratings volume (534 vs 34) and rating (4.5 vs 4.3). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $2.99 per month and HIIT sells 8 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Interval Timer has 534 ratings behind it against 34, so its average is the more settled of the two. Written reviews complicate that: 21% of Interval Timer's written reviews are positive against 57% of HIIT's, so the app with the better star average is not the one people write more warmly about.

Interval Timer ships an update every 3 months, HIIT every 2 weeks. The most recent releases landed on September 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Interval Timer | HIIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (534 ratings)](https://appshunter.io/ios/app/interval-timer-run-and-hiit/id956283665/reviews)** | [4.3 (34 ratings)](https://appshunter.io/ios/app/hiit-simple-interval-timer/id6449472984/reviews) |
| Number of ratings | **534** | 34 |
| Positive reviews | 21.1% of reviews | **57.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 83 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Roma Sosnovsky](https://appshunter.io/developer/956283664) | [Maxim Kazakov](https://appshunter.io/developer/1290266003) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-run-and-hiit/id956283665)

Organize your running and high-intensity interval training sessions with ease. Quickly set up custom time intervals for running, walking, warm-ups, and cool-downs. Receive voice and vibration notifications for interval changes, and enjoy background music playback.

**Highlights:** Intuitive design, Customizable time intervals, Warm-up and cool-down timers, Voice and vibration notifications, Background music support, Foreground/background operation

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Run Pro Monthly | $2.99 | per month |
| Interval Run Pro Annual | $19.99 | per year |
| Full Version | $2.99 | one-time |

**What reviewers like**

- 🚀 Simple and easy to use
- 👍 Customizable intervals
- 🚀 Straightforward app
- 👍 Works as advertised
- 👍 Great for getting back into running

**What reviewers complain about**

- 🔇 No audio prompts when screen is locked
- 🔋 High battery consumption
- 🔒 Limited free version
- 🐛 Inconsistent performance
- 🔇 Voice prompts not loud enough

**Reported bugs**

- Timer resets or freezes during workout
- Prompts not working when phone is locked or in pocket
- Unexpected interval changes or duration changes
- Compatibility issues with music playback

**Requested features**

- Option to pause/resume timer
- Larger time remaining display
- Apple Watch app
- Ability to play audio prompts even with screen off
- More interval options (run/walk/jog)


### HIIT

[App page](https://appshunter.io/ios/app/hiit-simple-interval-timer/id6449472984)

Design and track custom interval running workouts with real-time data and audio cues. This app offers detailed post-run analysis and integrates with Apple Health and Apple Watch for phone-free training.

**Highlights:** Customizable intervals (time, distance, open), Support for HIIT, tempo, fartlek, pyramid, progression workouts, Real-time tracking of pace, cadence, heart rate, Audio cues for guidance, Phone-free Apple Watch operation, Post-run analysis and GPX export, Apple Health integration

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Day 2 | $0.99 | per month |
| Premium Weekly | $3.99 | per 7 days |
| Premium Monthly Day 1 | $4.99 | per month |
| Premium Monthly | $9.99 | per month |
| Premium 3 Months | $19.99 | per 3 months |
| Premium Annual Special Offer | $29.99 | per year |
| Interval Run Premium Yearly | $59.99 | per year |
| Intreval Run Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Interval Timer free?

Interval Timer is free to download, with in-app purchases available.

### Is HIIT free?

HIIT is free to download, with in-app purchases available.

### Which has better reviews, Interval Timer or HIIT?

Interval Timer is rated higher. Interval Timer averages 4.5 out of 5 from 534 ratings, while HIIT averages 4.3 from 34 ratings.

### Do Interval Timer or HIIT have ads?

Neither Interval Timer nor HIIT shows ads.

### Which is updated more often, Interval Timer or HIIT?

Interval Timer ships an update every 3 months, and HIIT every 2 weeks. Most recently, Interval Timer was updated on September 1, 2026 and HIIT on September 18, 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.*