Version history
HIIT 4x4
37
ASO score
Text
45/100
Reviews
0/100
Graphic
60/100
Other
0/100
App Rating
1
Votes
1
App Age
6y 11m
Last Update
Sep 20, 2024
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
1
|
4.68
|
-79%
|
|
Number of Ratings (Voted)
|
1
|
832.2K
|
-100%
|
|
App Age
|
6y 10m
|
9y 2m
|
-25%
|
|
Price
|
$5
|
$0
|
|
|
In-app Purchases Price
|
$0
|
$49
|
|
|
Update Frequency
|
478d
|
19d
|
+2 432%
|
|
Title Length
|
8
|
26
|
-69%
|
|
Subtitle Length
|
23
|
28
|
-18%
|
|
Description Length
|
1 221
|
3 242
|
-62%
|
|
Number of Screenshots
|
383
|
1527
|
-75
%
|
|
Size
|
18MB
|
351MB
|
-95
%
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Jan 04, 2026 | Jan 11, 2026 |
|---|---|---|
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No results were found!
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| Top | Jan 04, 2026 | Jan 11, 2026 |
|---|---|---|
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No results were found!
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| Top | Jan 04, 2026 | Jan 11, 2026 |
|---|---|---|
|
No results were found!
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| Top | Jan 04, 2026 | Jan 11, 2026 |
|---|---|---|
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No results were found!
|
||
Ranking Keywords in United States
| Keywords | App Rank |
|---|
Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
8
of 30
)
HIIT 4x4
Subtitle
(
Characters:
23
of 30
)
Interval Training Meter
Description
(
Characters:
1221
of 4000
)
HIIT 4x4 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 a person's 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 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 stores your workout history using Apple Health.
HIIT 4x4 is based on the High Intensity Interval Training 4x4 program developed by the Norwegian University of Science and Technology's Cardiac Exercise Group.}
Read more
Other
Additional Information
| Rating: | |
| Voted: | 1 |
| App Store Link: | |
| Price: | 4.99 $ |
| Website: | |
| Email: | - |
| Privacy Policy: | |
| Categories: | Health & Fitness, Sports |
| Size: | 17MB |
| App Age: | 6 years 11 months |
| Release Date: | Feb 20, 2019 |
| Last Update: | Sep 20, 2024 |
| Version: | 1.08 |
Version history
1.08
Sep 20, 2024
Start button moved to Settings screen to streamline operation.
1.07
Jan 13, 2023
Added active calories to the workout