Price and ratings
- Price
- $5.99
- Rating
- 4.3 out of 5
- Ratings
- 54United States
Versions
- Released
- 1 May 20242 years ago
- Last update
- 4 months agoVersion 2.5
- Requires
- iOS 17.6 or later
Details
- Size
- 5.5 MB
- Languages
- 1
Norwegian 4x4 HIIT Timer — Interval Training & VO2 Max BOOST VO2 MAX WITH NORWEGIAN 4X4 PROTOCOL WORKOUTS Train smarter with the Norwegian 4x4 protocol, one of the most studied HIIT methods for improving cardiovascular performance and endurance. A precise, distraction-free timer guides every interval so you can focus on the effort. KEY FEATURES: - Norwegian 4x4 Timer - Precision 4min work / 3min rest cycles - Heart Rate Training - Track 90-95% max HR zones - VO2 Max Improvement…
Competitors
Full chartTop of Paid · Health & Fitness in United States. Norwegian 4x4 Protocol is #48 there. Changes are over 7 days.
- #1 (number one)Change unknown
AutoSleep: Watch Sleep TrackerTantsissa - #2Change unknown
WorkOutDoorsCCS Ltd - #3Change unknown
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Blood Type Diet®D'Adamo Personalized Nutrition® - #8Change unknown
HealthFitStephane Lizeray - #9Change unknown
Couch to 5K® - Run trainingActive Network, LLC - #10Change unknown
Air & Space Fitness CalculatorPatrick Smith - #11Change unknown
BrainWave: 40 Binaural Series™Banzai Labs - #12Change unknown
Watch to 5K: Couch to 5km planSpaceman Digital Ltd - #13Change unknown
Calorie Counter PRO MyNetDiaryMyNetDiary Inc. - #14Change unknown
O2 Buddy: Blood Oxygen SpO2Minorbits LLC - #15Change unknown
PepCalc: Peptide CalculatorAwesome Labs LLC - #16Change unknown
Nomo WidgetsParker Stech - #17Change unknown
HRV4TrainingA.S.M.A. B.V. - #18Change unknown
Health Export CSVTomas Parizek - #19Change unknown
- #20Change unknown
Rainy MoodPlain Theory, Inc.
Store listing
How the app presents itself on the App Store. Select a screenshot to open it full size.
What's new
Version 2.5 · 10 Jun 2026 · 4 months ago
Visual improvements and fixes based on your feedback. Same focused simplicity for your Norwegian 4x4 sessions. Cooldown 4x4 session wrapper added on users feedback (optional, as warm-up).
Current rankings
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| United States· Paid · Health & Fitness | #48 | New entry | Change unknown | #48 | 1 |
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
United States · Paid · Health & Fitness: best #48, latest #48, over 6 snapshots since 8 Oct. No snapshots from 8 Oct to 9 Oct, on 9 Oct, and on 10 Oct; the line joins the snapshots on either side.
Ranking events
Entries, big moves, #1s and new versions we've recorded.
- Entered the Paid · Health & Fitness chart at #48United States