# Intervals Pro vs HIIT (Watch) Timer

The clearest difference is price: Intervals Pro at Free against HIIT (Watch) Timer's $3.99. Intervals Pro also leads on rating (4.8 vs 4.2) and update cadence (every 8 days vs every 2 months). HIIT (Watch) Timer's advantage is in-app purchases (none vs 8). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Intervals Pro is free to download; HIIT (Watch) Timer costs $3.99 up front. Intervals Pro sells 8 in-app purchases, starting at $2.99 per month. HIIT (Watch) Timer asks for nothing beyond the download.

Intervals Pro holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Intervals Pro has 14K ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 84% of Intervals Pro's written reviews are positive against 80% of HIIT (Watch) Timer's.

Intervals Pro ships an update every 8 days, HIIT (Watch) Timer every 2 months. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Intervals Pro | HIIT (Watch) Timer |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.8 (14K ratings)](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938/reviews)** | [4.2 (12 ratings)](https://appshunter.io/ios/app/hiit-watch-timer/id1234961483/reviews) |
| Number of ratings | **14K** | 12 |
| Positive reviews | **84.4% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 69 MB | 44 MB |
| Requires iOS | 17.5 | **16.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Intervals, LLC](https://appshunter.io/developer/331071662) | [RhythmicWorks](https://appshunter.io/developer/977154427) |

## What reviewers say

### Intervals Pro

[App page](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938)

Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.

**Highlights:** Highly customizable intervals (time/distance), Spoken interval names and prompts, Standalone Apple Watch workouts, Workout history with Apple Health, Home screen widgets for quick launch, Bluetooth heart rate monitor support, Siri Shortcuts integration

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $2.99 | per month |
| Yearly Membership | $19.99 | per year |
| Generous Tip | $0.99 | one-time |
| Awesome Tip | $1.99 | one-time |
| Massive Tip | $4.99 | one-time |
| Amazing Tip | $9.99 | one-time |
| Intervals Pro (Legacy) | $69.99 | one-time |
| Lifetime Access | $69.99 | one-time |

**What reviewers like**

- 👍 Customizable timers and intervals
- 🚀 Seamless Apple Watch integration
- 💪 Helps with fitness goals and training
- 🔍 Detailed workout tracking and analytics
- 🎨 Intuitive and user-friendly interface

**What reviewers complain about**

- 🐛 Occasional sync and connectivity issues
- 🔍 Lack of clear guidance and documentation
- 💰 Paid version required for full functionality

**Reported bugs**

- Workout data not syncing correctly
- App crashes or freezes on certain devices

**Requested features**

- More customization options for interval displays
- Ability to batch delete or manage workout history
- Integration with more third-party fitness apps


### HIIT (Watch) Timer

[App page](https://appshunter.io/ios/app/hiit-watch-timer/id1234961483)

This app offers a straightforward interval timer designed for Apple Watch, iPhone, and iPad. It features a clean interface, live heart rate monitoring, haptic feedback, and detailed workout summaries, seamlessly integrating with the Health app.

**Highlights:** Apple Watch independent app, Live heart rate monitoring, Haptic feedback and audio alerts, Workout summary with calories and heart rate, Health app integration, Customizable intervals (warm-up, cooldown, rest), Complications for quick access

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

**In-app purchases:** none


## Frequently asked questions

### Is Intervals Pro free?

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

### Is HIIT (Watch) Timer free?

HIIT (Watch) Timer costs $3.99, with no in-app purchases.

### Which has better reviews, Intervals Pro or HIIT (Watch) Timer?

Intervals Pro is rated higher. Intervals Pro averages 4.8 out of 5 from 14K ratings, while HIIT (Watch) Timer averages 4.2 from 12 ratings.

### Do Intervals Pro or HIIT (Watch) Timer have ads?

Neither Intervals Pro nor HIIT (Watch) Timer shows ads.

### Which is updated more often, Intervals Pro or HIIT (Watch) Timer?

Intervals Pro ships an update every 8 days, and HIIT (Watch) Timer every 2 months. Most recently, Intervals Pro was updated on September 24, 2026 and HIIT (Watch) Timer on September 21, 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.*