# HIIT vs HIIT 4x4 Lite

The clearest difference is in-app purchases: HIIT 4x4 Lite at none against HIIT's 11. HIIT 4x4 Lite also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.0). HIIT's advantage is update cadence (monthly vs every 25 months) and ratings volume (31K vs 2). On price, rating and device support there is nothing between them.

Both are free to download. HIIT sells 11 in-app purchases, starting at $2.99 per 7 days. HIIT 4x4 Lite asks for nothing beyond the download.

HIIT 4x4 Lite holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: HIIT has 31K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 91% of HIIT's written reviews are positive against 67% of HIIT 4x4 Lite's, so the app with the better star average is not the one people write more warmly about.

HIIT ships an update monthly, HIIT 4x4 Lite every 25 months. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | HIIT | HIIT 4x4 Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (31K ratings)](https://appshunter.io/ios/app/hiit-workouts-and-timer/id891535485/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hiit-4x4-lite/id1558498996/reviews)** |
| Number of ratings | **31K** | 2 |
| Positive reviews | **90.8% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 25 months |
| Monetization | Freemium | **Free** |
| Size | 159 MB | 18 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Fast Builder Limited](https://appshunter.io/developer/596300475) | [Eastridge Technology](https://appshunter.io/developer/392920417) |

## What reviewers say

### HIIT

[App page](https://appshunter.io/ios/app/hiit-workouts-and-timer/id891535485)

This app offers short, high-intensity interval training (HIIT) workouts that can be done anywhere with no equipment. It provides scientifically proven exercises, custom timer templates, and progress tracking to help users achieve fitness results quickly.

**Highlights:** Short, high-intensity workouts, Customizable timer templates, Step-by-step instructions, Calendar and weight tracking, Voice and video guidance, Apple Health integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lock-in our cheapest price! | $2.99 | per 7 days |
| 7M Pro | $2.99 | per 7 days |
| Get Yearly Premium! | $9.99 | per year |
| Interval Timer Pro + Workouts | $12.99 | per month |
| Interval Timer X premium | $19.99 | per 3 months |
| 7M Pro | $19.99 | per 3 months |
| Get Monthly Premium! | $19.99 | per month |
| Get Yearly Premium! | $19.99 | per year |
| Interval Timer X premium | $29.99 | per year |
| 7M Pro | $29.99 | per year |
| Interval Timer Pro + Workouts | $39.99 | per year |

**What reviewers like**

- 👍 Variety and flexibility of workouts
- 🚀 Easy to follow and effective workouts
- 💪 Workouts challenge users and help them see results
- 🎨 Good range of difficulty levels
- ⏱️ Convenient short workout options

**What reviewers complain about**

- 🐛 Some workouts are too easy or repetitive
- 🔇 Lack of music or audio guidance during workouts
- 💰 Concerns about paid subscription model
- 🤔 Lack of modifications or low-impact options

**Reported bugs**

- Some videos or links not working
- Occasional crashes or performance issues

**Requested features**

- Option to create custom workouts
- More workout types beyond just HIIT
- Integration with fitness tracking apps
- Ability to save favorite workouts


### HIIT 4x4 Lite

[App page](https://appshunter.io/ios/app/hiit-4x4-lite/id1558498996)

This app guides you through High Intensity Interval Training (HIIT) workouts using your heart rate as a guide. It sequences exercise between high and low intensity intervals, displaying your progress on a speedometer-style dial. Warning chimes alert you if your heart rate falls outside the target zone.

**Highlights:** High Intensity Interval Training (HIIT) guidance, Heart rate monitoring based on MHR percentage, Speedometer-style heart rate dial, Warning chimes for out-of-range heart rate, Based on NTNU's 4x4 HIIT program

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HIIT free?

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

### Is HIIT 4x4 Lite free?

HIIT 4x4 Lite is free to download, with no in-app purchases.

### Which has better reviews, HIIT or HIIT 4x4 Lite?

HIIT 4x4 Lite is rated higher. HIIT averages 4.8 out of 5 from 31K ratings, while HIIT 4x4 Lite averages 5.0 from 2 ratings.

### Do HIIT or HIIT 4x4 Lite have ads?

HIIT shows ads; HIIT 4x4 Lite does not.

### Which is updated more often, HIIT or HIIT 4x4 Lite?

HIIT ships an update monthly, and HIIT 4x4 Lite every 25 months. Most recently, HIIT was updated on October 29, 2026 and HIIT 4x4 Lite on October 7, 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.*