# Norwegian 4x4 Protocol — user reviews > 15 indexed App Store user reviews of Norwegian 4x4 Protocol by Nikita Yampolski, rated 4.30/5 from 50 ratings. - Source: https://appshunter.io/ios/app/norwegian-4x4-protocol/id6499464775/reviews - App overview in markdown: https://appshunter.io/ios/app/norwegian-4x4-protocol/id6499464775.md - Rating breakdown: 5★ 37 · 4★ 3 · 3★ 3 · 2★ 3 · 1★ 4 ## Most critical reviews (10 lowest-rated) ### 1/5 — Doesn’t work *2026-08-18* App resets itself at each interval. Doesn’t work **Developer response:** Thank you for your feedback. Please, let us know exactly what happens, going to our website and contacting us (staring a chat support). We are happy to fix the issue. Is this in a background mode? Or with app in a foreground? Thank you. ### 1/5 — No Details *2026-03-15* This app is essentially a timer, there is no guided instruction, which is difficult as a beginner. Also, when the app went in the background, it closed and kept starting over again during my workout. Do not recommend. **Developer response:** Thanks for the stars, ErnLantry. We have never promised any guided instruction, indeed. It was always meant to be a perfect, simple customer 4x4 timer app with colour-coding. ### 1/5 — Doesn’t work *2025-08-22* Was excited to use this app but quickly became disappointed when I learned the heart rate doesn’t not sync with app when using Apple Watch. It remains frozen on the reading for heart rate, which defeats the purpose for this app. Supports response is they don’t control 3rd party apps. **Developer response:** Thanks for your stars! As discussed in another channel we have released 1.33 version of the app to fix the issue. It looked like you were ok with an outcome but already wrote this review. Anyway, thanks for trying! ### 2/5 — Meh *2026-03-02* I see why a trial period was not an option, I wouldn’t have purchased. I was expecting a linkage to target heart rates and the Apple Watch pulse reading. **Developer response:** Thanks for your stars, Meh. We do connect to Apple Health. Did you allow it on prompt? We really focus on timer and not HR (can be read in your watch). As our triathlon adviser says: “you are not doing a real HIIT if you can still follow the HR rate readings”. ### 2/5 — User *2025-12-19* It has the right times, but no tracking history and goes out when have to use your electronic for either a phone call or email etc **Developer response:** Thanks for your stars, Lacypoo! You may click on calories on top of the home screen of the app to see history of the workouts. Also get the latest 2.2 version with improvements. Merry Christmas and Happy New Year! ### 2/5 — Please don’t bill me again for this *2025-10-12* I am not using this app any more. Instead I found a HIIT routine that is a far more effective calorie burner. Also I hate being chained to a timer. **Developer response:** Thanks for the stars, NikonJunkieGirl! Looks like you just need another product for another use-case. Stay healthy and fit, whatever you choose! Billing again is a title — well, you pay only once, as you may have noticed — there is no subscription. ### 3/5 — Why? *2026-02-03* I’m not really sure what the point of this app is. It’s a glorified timer. Doesn’t have a watch app and doesn’t give live heart data. **Developer response:** Thanks for your stars, Alarcahu. Yep. It is a simple timer app, tuned for Norwegian 4x4 protocol with customization. ### 3/5 — Ok *2025-08-25* HR doesn’t fully sync. **Developer response:** Thanks for your stars, Bellinghamster! ### 3/5 — Ways to make this better *2025-07-14* When I am jumping around it’s very hard to see where I am in each of the four minutes. What if, okay leave the “rest” screen green. Make each of the four minutes of HIIT different colors or shades. Very hard to see black minutes and seconds on a red screen. How about this: Green: chill out Yellow: first minute of HIIT Blue: second minute of HIIT Orange: third minute of HIIT Black: final minute of HIIT **Developer response:** Thanks for the stars, NikonJunkieGirl! We appreciate the feedback and will improve up on it. Stay healthy and keep that HIIT going! BTW the timer was improved. Hope you are still doing well with 4x4! ### 3/5 — Could be better *2025-07-05* I would like to do four exercises in each of the four minute periods. It would be more useful to have a little sound every one minute in addition to the sounds at four minutes and when four minutes ends. I was surprised to be billed for this very basic functionality. I could seriously just tell Alexa to set this up for me. Also during the four minute periods the screen is red and it’s very hard to read it without stopping and leaning over or getting up from burpees to drip sweat on my phone to see if I still have time or if I should move on to my next exercise. This app could be made much better. Not asking for a workout just asking for a more targeted timer. **Developer response:** Thanks for the stars, NikonJunkieGirl! We appreciate the feedback and will improve up on it. Stay healthy and keep that HIIT going! ## Most praised reviews (5 highest-rated) ### 5/5 — Excellent App *2026-07-15* Simple review… IT WORKS😃:) **Developer response:** Thanks for your stars, guys. And all we need is a bit of simplicity in our lives, don’t we? :-) thanks for this simple review. Made our day! ) ### 5/5 — Awesome App with great tech support *2025-12-06* Great app backed up with awesome support. I had and issue which was addressed and resolved within 24 hours. That’s top tear performance. **Developer response:** Thanks for your stars and feedback, Ozorbas! Happy it has solved an issue which surely others will benefit from too. We can make our app better only based a real feedback like yours! ### 5/5 — Simplify 4 x 4 *2025-11-02* This app handles the timing for 4 x 4 intervals. It is quite simple and works effectively. I have sometimes in the past lost track of which interval I was on this app solves the problem. **Developer response:** Thanks, Michael. Your stars mean a lot to us! Send us a feedback via website or email on AppStore page for ideas and further improvements. And keep rocking, stay healthy! ### 5/5 — Jimmy Maher *2025-07-23* Love it ! Big help in getting me back to a state of fitness after years of neglecting my wellness **Developer response:** Jimmy, it means a world to us! Thanks for support! We are also working on an updated version, more modern design, but still same amazing simplicity and sport-agnostic focus. Drop us a line at 4x4@norwegian4x4.com - what triggered you to come back? What sport you do? ### 3/5 — So-so *2025-05-25* To make this work you have to keep you screen on and with that app open-fully. **Developer response:** Dear JustOK, please, give a try again. The app has been improved last year. Thanks for your feedback and Merry Christmas! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*