Comparison

Mobility Coach 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

Mobility Coach

This app offers clinically-proven mobility and stretching routines designed to relieve pain, enhance sports performance, and improve daily movement. It features personalized video prescriptions based on mobility tests and offers targeted exercises for specific pain points.

Highlights
  • Clinically-proven mobility programs
  • Personalized video prescriptions
  • Mobility testing and progress tracking
  • Targeted pain relief exercises
  • Sport-specific pre/post workout routines
  • Daily fresh mobility sessions
  • Customizable mobility playlists
Features
Currently charting
Read full description

The Only Clinically-Proven Mobility App to Relieve Pain, Increase Sports Performance, and Get You Moving Better In Every Area of Your Life. The Mobility Coach App is the go-to program for over 100,000 recreational and professional athletes, coaches, personal trainers, and everyday movers. Designed by Dr. Kelly Starrett, renowned physical therapist and 3x New York Times Bestselling author, this is the only clinically proven program that: → Enhances mobility, flexibility & range of motion → Prepares you to tackle your favorite sport or workout with ease → Helps you address nagging pain → Serves up a fresh, new mobility video each day → Tests your mobility and provides personalized video prescriptions to improve your bodywide function → Gives you live access to Dr. Kelly Starrett each month via Q&A sessions With a library of over 1,000 hours of expert-led mobility content, the Mobility Coach App delivers daily videos ranging from 5 to 30 minutes, as well as an entire library of on-demand videos to choose from based on your needs each day. Each session zeroes in on your biggest limitations to help you move better, recover faster, and get back to doing what you love. ↓↓ Check out what’s inside ↓↓ MOBILITY TEST: MEASURE YOUR BASELINE & PROGRESS Begin your journey with our comprehensive Mobility Test, developed by Dr. Kelly Starrett himself. This guided self-assessment evaluates key areas—Trunk, Shoulders, Hips, and Ankles—giving you a Mobility Score that highlights areas to improve. Your results feed directly into the app’s recommendations, ensuring a mobility program that adapts to your unique needs. PAIN RELIEF: BODY PART BY BODY PART Experiencing discomfort? The Mobility Coach App's ‘Pain Map’ lets you pinpoint problem areas on an interactive body chart, offering targeted mobilizations to help alleviate pain and enhance recovery. PRE & POST SPORT RECOMMENDATIONS: TRAIN LIKE A PRO For athletes and active individuals, the app offers specialized ‘Sport-Specific’ videos designed for both pre- and post-activity. Whether you’re gearing up for a heavy lift, recovering from a long run, or prepping for your favorite sport, these guided mobilizations keep your body in peak condition. DAILY MOBILITY: FRESH CONTENT EVERY DAY Our ‘Daily Mobility’ section brings you a brand-new guided session each day, perfect for building a consistent mobility routine. Want to target specific areas or adjust the session length? Use the filter feature to find the right video for your needs. CUSTOM MOBILITY PLAYLISTS Your mobility journey is personal. Now, with ‘Custom Mobility Playlists’, you can handpick videos and design routines around your unique goals. Perfect for recovery days, pre-workout warm-ups, or specific body areas, this feature gives you the flexibility to build a playlist that fits your life. Want to share your routines with others? Make your playlists public and spread the love. HABIT ALARM & DAILY CHECK-IN Staying consistent is key, so we built tools to help you build the habit. Set a ‘Habit Alarm’ to remind you to mobilize at your preferred time each day. Then, use the Daily Check-In to track your progress, record how you feel, and keep a running log of your mobility journey. LEADERBOARDS, STREAKS & BADGES Celebrate your wins and stay accountable with ‘Leaderboards, Streaks, and Badges’. See how you stack up against other users, keep the streak alive, and unlock achievements as you go! BONUS CONTENT → Mobility Challenges designed to improve ROM across key areas of the body → Live Q&A sessions with Dr. Kelly Starrett each month → Free First Aid Protocol (worth $99) → Free Foam Rolling Protocol (worth $99) As a member of the Mobility Coach App, you have everything you need to improve your mobility, alleviate pain, and boost your athletic performance—all while tracking your progress and building a sustainable routine. We follow Apple's standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Mobility Coach4 screens
Norwegian 4x4 Protocol4 screens

Verdict

The call

The clearest difference is ads: Norwegian 4x4 Protocol at none against Mobility Coach's shown. Norwegian 4x4 Protocol also leads on rating (4.6 vs 4.2) and review sentiment (75% vs 62%). Mobility Coach's advantage is chart position (#128 vs unranked). On price, ratings volume, update cadence and in-app purchases 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. Mobility Coach sells 8 in-app purchases, starting at $0.49 per 7 days 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

Norwegian 4x4 Protocol holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 142 and 66 respectively. Written reviews point the same way: 62% of Mobility Coach's written reviews are positive against 75% of Norwegian 4x4 Protocol's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

Scorecard4 real differences · 7 level
Mobility Coach versus Norwegian 4x4 Protocol: the parameters behind the verdict, then further details
ParameterMobility CoachNorwegian 4x4 Protocol
PriceFreeFree
Rating4.2 (142 ratings)4.6 (66 ratings) — better
Positive reviews61.8% of reviews75.0% of reviews — better
Number of ratings142 — better66
Update frequencyEvery 2 weeksEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#128 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.0 — better16.6
Further details — not scored
Size69 MB10 MB
Age rating4+4+
DeveloperThe Ready State Inc.Havard Tryman

Customer experience

Mobility Coach

All ratings142 ratings
Positive76.8%
Neutral6.3%
Negative16.9%
Written reviews110 reviews
Positive61.8%
Neutral10.9%
Negative27.3%

Norwegian 4x4 Protocol

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

Bugs and requests

Mobility Coach

Reported bugs

14 issues
  • App crashes and force quit requirements
  • Login failures and session timeout issues
  • Videos freeze or fail to load completely
  • Video controls unavailable on iPhone after updates
  • iPad landscape mode not supported
Show 9 more
  • Downloads get stuck and never complete
  • App logs out unexpectedly or claims logged in elsewhere
  • Date/time tracking for consecutive day streaks fails
  • App update notifications without actual update option
  • Account creation screen missing date of birth input field
  • Billing continues after free trial cancellation
  • Subscription renewal without notification
  • Content in certain sections won't load
  • Unresponsive and slow app performance overall

Requested features

14 requests
  • Dark mode option
  • Video playback speed control
  • Detailed exercise breakdowns with written instructions and diagrams
  • Progress tracking and mobility score history
  • Expanded content for hypermobility and hand/wrist issues
Show 9 more
  • Ability to build custom warmup/cooldown protocols
  • Multi-device login support
  • Video download functionality that works reliably
  • Clear exercise duration and timing information
  • Introductory videos explaining core techniques
  • TV casting capability
  • Consistent daily routine update timing (e.g., midnight)
  • Leaderboard logging for completed sessions
  • More varied daily routines with less repetition

Norwegian 4x4 Protocol

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Mobility Coach

Subscriptions8
  • Monthly Subscription3 Days trial$0.497 Days
  • Annually Subscription3 Days trial$0.997 Days
  • Monthly Subscription$14.991 Month
Show 5 more
  • Monthly Subscription Plan7 Days trial$21.991 Month
  • Monthly Subscription Plan$21.991 Month
  • Yearly Subscription$159.991 Year
  • Annually Subscription Plan7 Days trial$229.991 Year
  • Annually Subscription Plan$229.991 Year
2 purchases

Norwegian 4x4 Protocol

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

Questions

Is Mobility Coach free?
Mobility Coach 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, Mobility Coach or Norwegian 4x4 Protocol?
Norwegian 4x4 Protocol is rated higher. Mobility Coach averages 4.2 out of 5 from 142 ratings, while Norwegian 4x4 Protocol averages 4.6 from 66 ratings.
Do Mobility Coach or Norwegian 4x4 Protocol have ads?
Mobility Coach shows ads; Norwegian 4x4 Protocol does not.
Which is updated more often, Mobility Coach or Norwegian 4x4 Protocol?
Mobility Coach ships an update every 2 weeks, and Norwegian 4x4 Protocol every 2 weeks. Most recently, Mobility Coach was updated on November 7, 2026 and Norwegian 4x4 Protocol on November 9, 2026.

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