52
BU Score
Solid
Norwegian 4x4 Protocol
✍️ BU Analytics Review
“
Norwegian 4x4 Protocol is an iOS app from Nikita Yampolski in the Health & Fitness category, currently rated 4.4★ across 48 ratings. Initial signal reads as mostly critical sentiment so far — users flag rough edges and unmet expectations.
Our BU Score puts it at 52 — Solid (established niche player). For a Health & Fitness app, that means established niche player.
Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.
creator
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| Good rating (4.4★)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (48 ratings)METRIC | −$300 | |
| Growing app (2y old)METRIC | +$200 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
May 25
Jul 25
Aug 25
Oct 25
Nov 25
Dec 25
Mar 26
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 5 MB🔞 4+📱 iOS 17.6+🔖 v2.4🔄 updated 1mo ago🌐 EN📂 Health & Fitness💰 Paid🚀 Launched 2024 (2y old)
📝 About this app
Norwegian 4x4 HIIT Timer - Interval Training & VO2 Max App
BOOST VO2 MAX WITH NORWEGIAN 4X4 PROTOCOL WORKOUTS
Transform your fitness with the proven Norwegian 4x4 interval training method - the most effective HIIT workout for maximising cardiovascular performance and endurance gains.
KEY FEATURES:
- Norwegian 4x4 Timer - Precision 4min work / 3min rest cycles
- Heart Rate Training - Track 90-95% max HR zones
- VO2 Max Improvement - Scientifically proven results
- HIIT Interval Timer - Multiple workout protocols
- Progress Tracking - Monitor your fitness transformation
- Universal Training - Running, cycling, rowing, any cardio, you name it
- Offline Ready - No internet required during workouts
- Haptics Feedback and Vibrations
- Countdown before the start
- Customizible Warmup session lenght
WHAT IS NORWEGIAN 4 BY 4 TRAINING?
The Norwegian 4x4 protocol is a revolutionary HIIT method featuring:
- 4 intervals of 4 minutes at 90-95% max heart rate
- 3 minutes active recovery between intervals
- Proven results: Increase VO2 max by up to 10% in 8 weeks
- Elite approved: Used by professional athletes worldwide
WHY CHOOSE NORWEGIAN 4X4 INTERVAL TRAINING?
- PROVEN RESULTS: Sports science research shows significant cardiovascular improvements
- BEGINNER FRIENDLY: Complete guide for Norwegian 4x4 workout beginners
- CUSTOMIZABLE: Adapt the Norwegian 4 x 4 protocol to your fitness level
- COMPREHENSIVE: Includes warm-up, cool-down, and recovery protocols
- VALIDATED: Mention in Tim Ferriss' Blog
PERFECT FOR:
- Athletes seeking performance gains with Norwegian 4x4 workouts
- Fitness enthusiasts wanting efficient HIIT interval training
- Anyone improving cardiovascular health through proven protocols
- Runners, cyclists, rowers using Norwegian 4x4 interval training
HOW OFTEN NORWEGIAN 4X4?
- Our app includes guidance on optimal training frequency and recovery for maximum VO2 max gains.
START YOUR NORWEGIAN 4X4 TRANSFORMATION
Join thousands who have revolutionised their fitness with the Norwegian 4x4 protocol training. Download the ultimate Norwegian 4x4 workout app now!
DOWNLOAD TODAY - TRANSFORM YOUR FITNESS WITH NORWEGIAN 4 BY 4
BOOST VO2 MAX WITH NORWEGIAN 4X4 PROTOCOL WORKOUTS
Transform your fitness with the proven Norwegian 4x4 interval training method - the most effective HIIT workout for maximising cardiovascular performance and endurance gains.
KEY FEATURES:
- Norwegian 4x4 Timer - Precision 4min work / 3min rest cycles
- Heart Rate Training - Track 90-95% max HR zones
- VO2 Max Improvement - Scientifically proven results
- HIIT Interval Timer - Multiple workout protocols
- Progress Tracking - Monitor your fitness transformation
- Universal Training - Running, cycling, rowing, any cardio, you name it
- Offline Ready - No internet required during workouts
- Haptics Feedback and Vibrations
- Countdown before the start
- Customizible Warmup session lenght
WHAT IS NORWEGIAN 4 BY 4 TRAINING?
The Norwegian 4x4 protocol is a revolutionary HIIT method featuring:
- 4 intervals of 4 minutes at 90-95% max heart rate
- 3 minutes active recovery between intervals
- Proven results: Increase VO2 max by up to 10% in 8 weeks
- Elite approved: Used by professional athletes worldwide
WHY CHOOSE NORWEGIAN 4X4 INTERVAL TRAINING?
- PROVEN RESULTS: Sports science research shows significant cardiovascular improvements
- BEGINNER FRIENDLY: Complete guide for Norwegian 4x4 workout beginners
- CUSTOMIZABLE: Adapt the Norwegian 4 x 4 protocol to your fitness level
- COMPREHENSIVE: Includes warm-up, cool-down, and recovery protocols
- VALIDATED: Mention in Tim Ferriss' Blog
PERFECT FOR:
- Athletes seeking performance gains with Norwegian 4x4 workouts
- Fitness enthusiasts wanting efficient HIIT interval training
- Anyone improving cardiovascular health through proven protocols
- Runners, cyclists, rowers using Norwegian 4x4 interval training
HOW OFTEN NORWEGIAN 4X4?
- Our app includes guidance on optimal training frequency and recovery for maximum VO2 max gains.
START YOUR NORWEGIAN 4X4 TRANSFORMATION
Join thousands who have revolutionised their fitness with the Norwegian 4x4 protocol training. Download the ultimate Norwegian 4x4 workout app now!
DOWNLOAD TODAY - TRANSFORM YOUR FITNESS WITH NORWEGIAN 4 BY 4
🆕 What's New · v2.4
Visual improvement and fixes based on feedback from users. Same amazing simplicity and focus on your Norwegian 4x4 HIIT workout.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Norwegian 4x4 Protocol
- Developer
- Nikita Yampolski
- Bundle ID
- com.norwegian4x4.mobileapp
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN
Company
- Website
- norwegian4x4.com
- Tagline
- Norwegian 4x4 Protocol App: Transform Your Fitness
- Description
- Download the official Norwegian 4x4 Protocol app for iOS & Android. Master the 4x4 workout method with guided intervals, heart rate tracking, and proven HIIT training for VO2 max improvement.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- OG image
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $86/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- https://sendfox.com/norwegian4x4
- https://www.linkedin.com/company/norwegian-4x4-protocol/
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- https://norwegian4x4.com/articles
- Press / News
- Not found
Contacts & Socials
- Socials
- facebook · instagram · linkedin · twitter
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- https://norwegian4x4.com/about
📈Ratings growth48 ratings+700% lifetimeShow 3-year history estimate ▾
Tracked (10 weeks) Pre-tracking estimate (25 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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