Comparison

Tabata Workout Timer (TWT) vs Norwegian 4x4 Protocol

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tabata Workout Timer (TWT)

Features
Read full description

TWT Tabata Workout Timer is a Workout Timer which was created to be set-up in a few seconds your new workout counting without any need of WiFi or Mobile Data connection. Free Version • Easy to use by pre set-up drag and drop timings. • Different timings can be implemented in one workout • E.g. 30 sec. work // 30 sec. rest // 60 sec. work • Workout timings can be saved. • 15 sec to set-up your timer • Round counting • Set-up your own timings for individual training. • Advertisements will appear !!! You can sign up for Premium to enjoy the App without any advertisements !!! WHY SHOULD YOU WORKOUT Benefits of Regular Physical Exercise Only 30 minutes of daily exercise could help you enjoy many benefits, including the following. • Manage your body weight • Maintain low blood pressure • Reduce the risks of a heart attack • Possess stronger muscles, joints, and bones • Feel relaxed and energetic • Enjoy better sleep • Meet new People by workout together Many researches have proved that exercise helps maintain a healthier state of mind. Mental Health Benefits of Regular Physical Exercise • Exercise blocks negative thoughts and keeps you away from daily worries • It helps to improve social contact while exercising with others. • Working on fitness would improve your sleeping patterns and also uplift your mood. • Exercise helps boost certain hormones and change the levels of certain chemicals in the body, such as endorphins, serotonin, and stress hormones. • For maintaining a better and healthy routine, people decided to opt for gyms. By committing yourself to the best workout, you can continue with a daily routine of exercising, and it would help build up your confidence. Eula: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tdinnovations.de/privacyPolicy

About

Norwegian 4x4 Protocol

This app guides you through the Norwegian 4x4 interval training protocol to improve your VO2 max and cardiovascular fitness. It offers customizable warm-up and cooldown durations, voice guidance for intervals, and integrates with Apple Watch for heart rate and calorie tracking.

Highlights
  • Norwegian 4x4 workouts
  • Voice guidance for intervals
  • Apple Watch heart rate tracking
  • Calorie tracking
  • Save workouts to Health app
  • No sign-in required
Features
Read full description

Get started with Norwegian 4x4 interval training. Norwegian 4x4 Protocol: Boreas makes it easy to get started with the Norwegian 4x4 protocol. Just select warm-up and cooldown duration, and the app handles the rest. You can connect an Apple Watch to track your heart rate and calories. The app supports voice guidance to let you know when the interval is about to end and when the next interval starts. Features: • Perform Norwegian 4x4 workouts. • Know when the next interval starts while the app is in the background with voice guidance. • Get current heart rate, heart rate zone and calories from your Apple Watch. • Save your workouts to the Health app. • No sign-in is required. Norwegian 4x4 Protocol: Boreas is a HIIT interval timer for improving cardio, which is relevant if you're training for 5k, 10k, half marathon, marathon, improving VO2 max or general fitness. If you have a suggestion for how to improve Norwegian 4x4 Protocol: Boreas, feel free to contact the App Support email. Always consult with a healthcare provider before starting any new exercise program. Exercise can carry risks, especially for people who have certain medical conditions or who have not been physically active in a long time. It's important to understand that using this app does not replace a doctor's advice or treatment. Terms of use for Norwegian 4x4 Protocol: Boreas: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Tabata Workout Timer (TWT)4 screens
Norwegian 4x4 Protocol4 screens

Verdict

The call

The clearest difference is ads: Norwegian 4x4 Protocol at none against Tabata Workout Timer (TWT)'s shown. Norwegian 4x4 Protocol also leads on update cadence (fortnightly vs every 2 months). On price, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Tabata Workout Timer (TWT) sells 3 in-app purchases, starting at $0.99 per month and Norwegian 4x4 Protocol sells 2 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Tabata Workout Timer (TWT) ships an update every 2 months, Norwegian 4x4 Protocol fortnightly. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 8 level
Tabata Workout Timer (TWT) versus Norwegian 4x4 Protocol: the parameters behind the verdict, then further details
ParameterTabata Workout Timer (TWT)Norwegian 4x4 Protocol
PriceFreeFree
Rating—4.7 (66 ratings) — better
Positive reviews—75.0% of reviews
Number of ratings—66 — better
Update frequencyEvery 2 monthsFortnightly — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.6 — better16.6
Further details — not scored
Size51 MB9 MB
Age rating4+4+
DeveloperT&D Innovations GbRHavard Tryman

In-app purchases

3 purchases

Tabata Workout Timer (TWT)

Subscriptions3
  • Ad-free monthly subscription$0.991 Month
  • Ad-free 6 month subscription$3.996 Months
  • Ad-free yearly subscription$8.991 Year
2 purchases

Norwegian 4x4 Protocol

Subscriptions2
  • Pro3 Days trial$8.997 Days
  • Pro$24.991 Year

Questions

Is Tabata Workout Timer (TWT) free?
Tabata Workout Timer (TWT) is free to download, with in-app purchases available.
Is Norwegian 4x4 Protocol free?
Norwegian 4x4 Protocol is free to download, with in-app purchases available.
Do Tabata Workout Timer (TWT) or Norwegian 4x4 Protocol have ads?
Tabata Workout Timer (TWT) shows ads; Norwegian 4x4 Protocol does not.
Which is updated more often, Tabata Workout Timer (TWT) or Norwegian 4x4 Protocol?
Tabata Workout Timer (TWT) ships an update every 2 months, and Norwegian 4x4 Protocol fortnightly. Most recently, Tabata Workout Timer (TWT) was updated on October 23, 2026 and Norwegian 4x4 Protocol on October 21, 2026.

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