# Tabata & HIIT Timer vs 4x4 Timer Interval Training

The clearest difference is review sentiment: Tabata & HIIT Timer at 100% against 4x4 Timer Interval Training's 0%. Tabata & HIIT Timer also leads on rating (5.0 vs 2.0) and ratings volume (4 vs 1). 4x4 Timer Interval Training's advantage is in-app purchases (none vs 6) and iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Tabata & HIIT Timer sells 6 in-app purchases, starting at $0.99 per month. 4x4 Timer Interval Training asks for nothing beyond the download.

Tabata & HIIT Timer holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 100% of Tabata & HIIT Timer's written reviews are positive against 0% of 4x4 Timer Interval Training's.

## The numbers

| Metric | Tabata & HIIT Timer | 4x4 Timer Interval Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/tabata-and-hiit-timer-peakvo2/id6532617265/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/4x4-timer-interval-training/id6759710803/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 16 MB | 12 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cristian Serb](https://appshunter.io/developer/294833680) | [Kesem Solutions Pty Ltd](https://appshunter.io/developer/1751494198) |

## What reviewers say

### Tabata & HIIT Timer

[App page](https://appshunter.io/ios/app/tabata-and-hiit-timer-peakvo2/id6532617265)

This app provides science-backed interval training protocols to improve cardiovascular fitness and long-term health. It guides users through warm-ups, work intervals, and cool-downs with customizable timers and activity tracking.

**Highlights:** Science-backed interval protocols (Norwegian 4x4, Tabata, HIIT), Color-coded workout timer with phase transitions, Activity tracking with streaks and progress, Supports running, cycling, rowing, and indoor cardio, Fitness age estimation

**Features:** Apple Watch app

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited | $0.99 | per month |
| Unlimited | $3.99 | per month |
| Unlimited | $4.99 | per 3 months |
| Unlimited | $8.99 | per year |
| Unlimited | $11.99 | per 6 months |
| Lifetime | $17.99 | one-time |


### 4x4 Timer Interval Training

[App page](https://appshunter.io/ios/app/4x4-timer-interval-training/id6759710803)

This app provides a simple, distraction-free interval timer for the Norwegian 4x4 training protocol. It guides users through 4 minutes of intense effort followed by 4 minutes of rest, repeated four times, to improve cardiovascular fitness and VO₂ max. The minimal interface ensures focus on the workout.

**Highlights:** Simple 4x4 interval timer, Clear ON/OFF phase guidance, Optional sound cues, Large, easy-to-read timer, Session progress tracking, Minimal interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Tabata & HIIT Timer free?

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

### Is 4x4 Timer Interval Training free?

4x4 Timer Interval Training is free to download, with no in-app purchases.

### Which has better reviews, Tabata & HIIT Timer or 4x4 Timer Interval Training?

Tabata & HIIT Timer is rated higher. Tabata & HIIT Timer averages 5.0 out of 5 from 4 ratings, while 4x4 Timer Interval Training averages 2.0 from 1 ratings.

### Do Tabata & HIIT Timer or 4x4 Timer Interval Training have ads?

Neither Tabata & HIIT Timer nor 4x4 Timer Interval Training shows ads.

---

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