---
title: "HIIT 4x4 Lite - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "HIIT 4x4 Lite is an Apple Watch exercise monitoring app for High Intensity Interval Training (HIIT). The app sequences exercise between high and low intensity intervals. The intensity of the exercise "
---

# HIIT 4x4 Lite — United States
> Interval Training Meter

![HIIT 4x4 Lite App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/bd/25/a6/bd25a602-ba4c-2445-5e55-9632fdca035d/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [Eastridge Technology](https://apptail.io/developer/eastridge-technology-EMD) (United States)
**Category:** Health Fitness
**Rating:** 5.0/5 (2 ratings)
**Price:** Free
**Bundle ID:** com.et.HIIT4x4-Lite
**Store:** Apple App Store
**Country:** United States
**Version:** 1.08 (released 2024-09-22)
**Original Release:** 2022-09-13
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1558498996)
**AppTail Page:** [https://apptail.io/app/hiit-4x4-lite-TETj/united-states](https://apptail.io/app/hiit-4x4-lite-TETj/united-states)

## HIIT 4x4 Lite Description
HIIT 4x4 Lite is an Apple Watch exercise monitoring app for High Intensity Interval Training (HIIT). The app sequences exercise between high and low intensity intervals. The intensity of the exercise is measured as a percentage of your Maximum Heart Rate (MHR). 

The HIIT 4x4 intervals are as follows:

- 10 minutes warmup at 60% MHR
- 4 minutes high intensity at 90% MHR
- 3 minutes low intensity at 70% MHR
- repeat high-low intervals 4 times (4 high intensity intervals of 4 minutes each = 4x4).

HIIT 4x4 Lite uses a speedometer type dial to display heart rate. When the arrow is in the green zone then your heart rate is within the interval target.  If the heart rate later  falls out of the target range, warning chimes are issued until back in range.

Each person's MHR is different, and changes with age. A commonly used formula for MHR is 220 - age in years. A more accurate number can be discovered by using a heart monitor during all out exercise and observing the highest heart rate achieved.

HIIT 4x4 Lite does NOT store your workout history using Apple Health. Please use the full version HIIT 4x4 (not Lite) to store workout history.

HIIT 4x4 Lite is based on the High Intensity Interval Training 4x4 program developed by the Norwegian University of Science and Technology's Cardiac Exercise Group.

## HIIT 4x4 Lite Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/65/3f/ca/653fcace-b700-c04c-d7c4-e8ad46364d9a/0dbbd55d-6347-482d-a4f3-2d6ee23fa269_start.png/416x496.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/2d/46/3e/2d463eb1-bffb-9c5e-8fa7-deaa378b2238/c8e34607-ff8c-45de-b408-7f3c9c976e49_settings.png/416x496.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ad/51/82/ad518231-bd84-b264-fe59-719ec84f3d22/424ea08a-fe2a-4e89-9ee7-08e73b289987_settings2.png/416x496.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/de/2f/c8/de2fc8f5-65e7-e425-3798-8b7d7bc0a8a9/4765b0a9-6b7a-4eb3-a1fd-b65eb6b40809_settings3.png/416x496.png)

## HIIT 4x4 Lite Rating Breakdown in United States
- 5 stars: 2 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)





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## HIIT 4x4 Lite Available In
- [United States](https://apptail.io/app/hiit-4x4-lite-TETj/united-states)
- [Canada](https://apptail.io/app/hiit-4x4-lite-TETj/canada)
- [Austria](https://apptail.io/app/hiit-4x4-lite-TETj/austria)
- [Australia](https://apptail.io/app/hiit-4x4-lite-TETj/australia)
- [Azerbaijan](https://apptail.io/app/hiit-4x4-lite-TETj/azerbaijan)
- [Belgium](https://apptail.io/app/hiit-4x4-lite-TETj/belgium)
- [Switzerland](https://apptail.io/app/hiit-4x4-lite-TETj/switzerland)
- [Chile](https://apptail.io/app/hiit-4x4-lite-TETj/chile)
- [China](https://apptail.io/app/hiit-4x4-lite-TETj/china)
- [Czechia](https://apptail.io/app/hiit-4x4-lite-TETj/czechia)
- [Germany](https://apptail.io/app/hiit-4x4-lite-TETj/germany)
- [Dominican Republic](https://apptail.io/app/hiit-4x4-lite-TETj/dominican-republic)
- [Algeria](https://apptail.io/app/hiit-4x4-lite-TETj/algeria)
- [Egypt](https://apptail.io/app/hiit-4x4-lite-TETj/egypt)
- [Spain](https://apptail.io/app/hiit-4x4-lite-TETj/spain)
- [Finland](https://apptail.io/app/hiit-4x4-lite-TETj/finland)
- [France](https://apptail.io/app/hiit-4x4-lite-TETj/france)
- [United Kingdom](https://apptail.io/app/hiit-4x4-lite-TETj/united-kingdom)
- [Greece](https://apptail.io/app/hiit-4x4-lite-TETj/greece)
- [Hong Kong SAR China](https://apptail.io/app/hiit-4x4-lite-TETj/hong-kong)
- [Hungary](https://apptail.io/app/hiit-4x4-lite-TETj/hungary)
- [Indonesia](https://apptail.io/app/hiit-4x4-lite-TETj/indonesia)
- [Ireland](https://apptail.io/app/hiit-4x4-lite-TETj/ireland)
- [Israel](https://apptail.io/app/hiit-4x4-lite-TETj/israel)
- [India](https://apptail.io/app/hiit-4x4-lite-TETj/india)
- [Italy](https://apptail.io/app/hiit-4x4-lite-TETj/italy)
- [Kuwait](https://apptail.io/app/hiit-4x4-lite-TETj/kuwait)
- [Kazakhstan](https://apptail.io/app/hiit-4x4-lite-TETj/kazakhstan)
- [Nigeria](https://apptail.io/app/hiit-4x4-lite-TETj/nigeria)
- [Norway](https://apptail.io/app/hiit-4x4-lite-TETj/norway)
- [Nepal](https://apptail.io/app/hiit-4x4-lite-TETj/nepal)
- [New Zealand](https://apptail.io/app/hiit-4x4-lite-TETj/new-zealand)
- [Peru](https://apptail.io/app/hiit-4x4-lite-TETj/peru)
- [Philippines](https://apptail.io/app/hiit-4x4-lite-TETj/philippines)
- [Pakistan](https://apptail.io/app/hiit-4x4-lite-TETj/pakistan)
- [Poland](https://apptail.io/app/hiit-4x4-lite-TETj/poland)
- [Portugal](https://apptail.io/app/hiit-4x4-lite-TETj/portugal)
- [Romania](https://apptail.io/app/hiit-4x4-lite-TETj/romania)
- [Russia](https://apptail.io/app/hiit-4x4-lite-TETj/russia)
- [Sweden](https://apptail.io/app/hiit-4x4-lite-TETj/sweden)
- [Singapore](https://apptail.io/app/hiit-4x4-lite-TETj/singapore)
- [Thailand](https://apptail.io/app/hiit-4x4-lite-TETj/thailand)
- [Türkiye](https://apptail.io/app/hiit-4x4-lite-TETj/turkey)
- [Taiwan](https://apptail.io/app/hiit-4x4-lite-TETj/taiwan)
- [Ukraine](https://apptail.io/app/hiit-4x4-lite-TETj/ukraine)
- [Vietnam](https://apptail.io/app/hiit-4x4-lite-TETj/vietnam)
- [United Arab Emirates](https://apptail.io/app/hiit-4x4-lite-TETj/united-arab-emirates)
- [South Africa](https://apptail.io/app/hiit-4x4-lite-TETj/south-africa)
- [Argentina](https://apptail.io/app/hiit-4x4-lite-TETj/argentina)

---

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