Comparison

PB Vision 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

PB Vision

This app uses AI to analyze your pickleball game recordings, providing detailed skill ratings and insights. Identify your strengths and weaknesses to improve your game faster and with greater confidence.

Highlights
  • AI-driven game analysis
  • Actionable skill ratings
  • Identify strengths and weaknesses
  • Accelerated game improvement
  • Detailed player insights
Features
Currently charting
Read full description

Every pickleball game you record becomes a lesson. PB Vision uses AI to turn your match videos into shot-by-shot stats, automatic skill ratings, highlights, and personalized coaching insights. Discover what's working, uncover what needs attention, and take your game to the next level. YOUR PERSONAL AI PICKLEBALL COACH Go beyond the stats with AI Coach. Ask questions about your performance, explore specific shots, and get personalized answers based on your actual match data. Analyze a single game or ask questions across multiple games to identify trends, compare performances, and discover opportunities to improve. KNOW EXACTLY HOW YOU RATE Get an overall PB Vision Skill Rating plus detailed ratings for Serve, Return, Offense, Defense, Consistency, and Agility. Track your progress over time and understand how you played—not just whether you won. EXPLORE EVERY SHOT Explore your matches shot by shot. Find drives, drops, dinks, lobs, Ernes, ATPs, errors, and more. Analyze shot quality, accuracy, speed, depth, placement, and 3D trajectories without searching through an entire match. BOOKMARK YOUR BEST MOMENTS Save important plays with Bookmarks. Add notes, draw directly on your video, and quickly revisit key moments to review your performance or share feedback with others. CLIP, EXPORT, AND SHARE Turn your favorite shots, rallies, and highlights into shareable videos. Export individual clips or multiple clips at once, choose your preferred aspect ratio, and share your favorite moments to social media. You can also share complete games with friends, partners, or coaches.

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

PB Vision4 screens
Norwegian 4x4 Protocol4 screens

Verdict

The call

The clearest difference is ads: Norwegian 4x4 Protocol at none against PB Vision's shown. Norwegian 4x4 Protocol also leads on review sentiment (75% vs 61%). PB Vision's advantage is chart position (#175 vs unranked). On price, rating, ratings volume and update cadence 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. PB Vision sells 10 in-app purchases, starting at $19.99 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for PB Vision against 4.6 for Norwegian 4x4 Protocol. Both are backed by a comparable volume of ratings — 143 and 66 respectively. Written reviews are what separate them: 61% of PB Vision's written reviews are positive against 75% of Norwegian 4x4 Protocol's.

UpkeepUpdate frequency

PB Vision ships an update every 9 days, Norwegian 4x4 Protocol every 2 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

Scorecard3 real differences · 8 level
PB Vision versus Norwegian 4x4 Protocol: the parameters behind the verdict, then further details
ParameterPB VisionNorwegian 4x4 Protocol
PriceFreeFree
Rating4.7 (143 ratings) — better4.6 (66 ratings)
Positive reviews60.7% of reviews75.0% of reviews — better
Number of ratings143 — better66
Update frequencyEvery 9 days — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#175 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS16.0 — better16.6
Further details — not scored
Size172 MB10 MB
Age rating4+4+
DeveloperPickleball Vision AI Inc.Havard Tryman

Customer experience

PB Vision

All ratings141 ratings
Positive90.1%
Neutral5.7%
Negative4.3%
Written reviews28 reviews
Positive60.7%
Neutral21.4%
Negative17.9%

Norwegian 4x4 Protocol

All ratings66 ratings
Positive89.4%
Neutral4.5%
Negative6.1%
Written reviews8 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

10 purchases

PB Vision

Subscriptions4
  • Starter$19.991 Month
  • Premium$49.991 Month
  • Starter$99.991 Year
Show 1 more
  • Premium$399.001 Year
One-time6
  • 200 AI Coaching Credits$9.99
  • 60 Minutes$9.99
  • 1000 AI Coaching Credits$39.99
Show 3 more
  • 300 Minutes$39.99
  • 5000 AI Coaching Credits$99.99
  • 1,200 Minutes$99.99
2 purchases

Norwegian 4x4 Protocol

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

Questions

Is PB Vision free?
PB Vision 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.
Which has better reviews, PB Vision or Norwegian 4x4 Protocol?
PB Vision is rated higher. PB Vision averages 4.7 out of 5 from 143 ratings, while Norwegian 4x4 Protocol averages 4.6 from 66 ratings.
Do PB Vision or Norwegian 4x4 Protocol have ads?
PB Vision shows ads; Norwegian 4x4 Protocol does not.
Which is updated more often, PB Vision or Norwegian 4x4 Protocol?
PB Vision ships an update every 9 days, and Norwegian 4x4 Protocol every 2 weeks. Most recently, PB Vision was updated on November 7, 2026 and Norwegian 4x4 Protocol on November 8, 2026.

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