HIIT 4x4 vs Bikeshops.com
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HIIT 4x4
This app guides you through High Intensity Interval Training (HIIT) workouts using your heart rate as a percentage of your Maximum Heart Rate (MHR). It features a speedometer-style dial to monitor your heart rate zones and provides chimes to keep you in target.
- Heart rate zone monitoring
- Speedometer-style dial
- Warning chimes for out-of-zone heart rate
- Workout history storage via Apple Health
- Customizable MHR calculation
- Structured 4x4 HIIT program
Read full descriptionHide full description
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.
Bikeshops.com
Find and manage your bicycle's maintenance needs in one convenient location. Keep track of service history and upcoming tasks for your bike.
- Centralized maintenance records
- Service history tracking
- Upcoming task reminders
- Easy to find bike care information
Read full descriptionHide full description
Your bike maintenance in one easy to find place.
Screenshots
Verdict
The clearest difference is price: Bikeshops.com at Free against HIIT 4x4's $9.99. Bikeshops.com also leads on rating (5.0 vs 1.0) and update cadence (every 2 weeks vs every 5 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Bikeshops.com is free to download; HIIT 4x4 costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Bikeshops.com holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
HIIT 4x4 ships an update every 5 months, Bikeshops.com every 2 weeks. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.
| Parameter | HIIT 4x4 | Bikeshops.com |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 1.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 12 MB |
| Age rating | 12+ | 4+ |
| Developer | Eastridge Technology | BEELINE CONNECT, INC. |
Customer experience
HIIT 4x4
Bikeshops.com
In-app purchases
HIIT 4x4
No in-app purchases
Bikeshops.com
No in-app purchases
