Comparison

Polar Flow vs Rocket

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Polar Flow

This app helps you track daily activity, analyze workouts with detailed metrics, and gain insights into sleep patterns and recovery. It allows for device management, route planning, and seamless syncing with other popular fitness platforms.

Highlights
  • Activity Tracking
  • Training Analysis
  • Sleep Insights
  • Training Load & Recovery
  • Device & Profile Management
  • Wireless Syncing
  • Third-Party Service Integration
Features
Read full description

Polar Flow: Your Personal Sports, Fitness, and Health Companion The exclusive app designed to maximize the potential of your Polar devices. Key Features: Activity Tracking: Monitor your daily activity, steps, calories burned, and distance to stay motivated throughout the day. Training Analysis: Dive deep into your workouts with detailed data on heart rate, speed, pace, distance, power, and more. Understand the impact of each session and optimize your training routines. Sleep Insights: Discover how well you sleep with advanced sleep tracking. Get feedback on sleep stages and quality to improve your rest and recovery. See how sleep boosts your day and track skin temperature changes. Training Load & Recovery: Understand how your training sessions strain your body and get recommendations on recovery time to prevent overtraining. Manage your watch and profile: Customize and manage your Polar device, Sports profiles for different activities, Routes, and Training Targets. Wireless Syncing: Automatically sync data from your Polar devices for real-time updates, notifications, and other insights. Stay Connected: Connect your profile and sync your data with Strava, TrainingPeaks, Adidas, komoot, and many other services. Why Choose Polar Flow? Personalized Guidance: Receive personalized feedback and guidance and understand your progress. Comprehensive Ecosystem: Integrates seamlessly with Polar watches, heart rate monitors, and more for a holistic experience. User-Friendly Interface: Navigate your data effortlessly with our intuitive and clean design. Notification support: Your Polar watch will receive the same notifications as your phone screen—incoming calls, messages, and app notifications. Secure and Private: Your data is safely stored and protected, giving you peace of mind as you focus on your journey. Polar Flow app allows you to share some of your wellness data with Apple Health. This includes details of your training, your heart rate, and steps. Please note Polar Flow app is not intended for medical or diagnostic use. Get Started Today! Download Polar Flow and unlock the full potential of your Polar devices. You can find more info at https://www.polar.com/flow Connect with us! Instagram: www.instagram.com/polarglobal Facebook: www.facebook.com/polarglobal YouTube: www.youtube.com/polarglobal Find out more about Polar products at https://www.polar.com/en/products

About

Rocket

This adaptive training app creates personalized, multi-discipline plans for athletes balancing various sports like triathlon, HYROX, and running. It automatically adjusts your schedule based on your life events and training progress, offering the intelligence of a personal coach at a fraction of the cost.

Highlights
  • Personalized multi-discipline training plans
  • Adaptive load management
  • Automatic schedule adjustments
  • Strava and watch sync
  • Supports up to 10 races annually
  • Built by coaches and scientists
Features
Read full description

Rocket gives you a personalised running and triathlon training plan, built by coaches and shaped around your life, from 5K to marathon and sprint to full distance. It adapts to your schedule, your body and your goals, just like a coach. One engine for every race. Your races. Your schedule. Your goals. Takes minutes. BUILT FOR RUNNERS - Couch to 5K, 10K, half marathon, marathon and ultra plans - Pace and heart rate zones set from your own threshold test - Every session sent to your watch with target pace and coach notes BUILT FOR TRIATHLETES - Sprint, Standard, Half Distance and Full Distance plans - Swim, bike, run and brick sessions balanced across your week - Strength built for athletes who race BUILT FOR HYBRID ATHLETES - Coach-built HYROX programs for your side quests: Singles and Doubles, Open to Pro - Cross-training for runners: add aerobic volume on the bike or in the pool without extra load on your legs - Run, ride, swim and lift in one plan, with your total load balanced across every sport YOUR WHOLE SEASON IN ONE PLAN Add your A, B and C races. Rocket builds your phases, sharpens you for your A race and tapers you automatically. Up to 10 races a year on one plan. PLANS THAT ADAPT Miss a session and your week reshapes around what's left. Get fitter and the load increases. Work, travel, illness: Rocket adjusts. COACHED BY HUMANS Every session is built by real coaches and discipline leads, guided by a Performance Council of physios, sports scientists and elite athletes. Coach notes tell you the why behind every workout. ALSO IN ROCKET - Strength video library with every move on camera - Mobility and breathwork WORKS WITH YOUR GEAR Apple Watch, Garmin, COROS, Wahoo and Strava. THE ROCKET COMMUNITY You don't train alone. Join Rocket Athletes around the world, share the work and push each other through every block. We host events for Rocket Athletes, and on race weekends the Rocket team lines up on the start line with you. PRICING Personal coaching costs $300 to $600 a month. Rocket costs [$19.95 USD a month or $119.99 USD a year]. A full year with Rocket costs less than a single month with a coach. SUBSCRIPTION & FREE TRIAL Rocket Premium is available as a monthly or annual auto-renewing subscription with a 7-day free trial. Payment is charged to your Apple ID at confirmation of purchase and renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Polar Flow4 screens
Rocket4 screens

Verdict

The call

The clearest difference is rating: Polar Flow at 4.6 against Rocket's 1.0. Polar Flow also leads on ratings volume (50K vs 1). Rocket's advantage is review sentiment (83% vs 50%) and update cadence (every 5 days vs monthly). On price, ads, in-app purchases and monetization model 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. Polar Flow sells 1 in-app purchase, starting at $8.99 per month and Rocket sells 2 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Polar Flow holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Polar Flow has 50K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Polar Flow's written reviews are positive against 83% of Rocket's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Polar Flow ships an update monthly, Rocket every 5 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Polar Flow versus Rocket: the parameters behind the verdict, then further details
ParameterPolar FlowRocket
PriceFreeFree
Rating4.6 (50K ratings) — better1.0 (1 ratings)
Positive reviews49.6% of reviews83.3% of reviews — better
Number of ratings50K — better1
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size189 MB154 MB
Age rating4+4+
DeveloperPolar ElectroRocket Endurance Pty Ltd

Customer experience

Polar Flow

All ratings50,010 ratings
Positive91.3%
Neutral4.5%
Negative4.2%
Written reviews2,215 reviews
Positive49.6%
Neutral11.2%
Negative39.2%

Rocket

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Bugs and requests

Polar Flow

Reported bugs

3 issues
  • App crashes during syncing
  • Inconsistent data sync between watch and app
  • Firmware updates causing loss of user data

Requested features

4 requests
  • Ability to manually edit workout data
  • Integration with more third-party apps
  • More advanced training programs and coaching
  • Improved sleep tracking and analysis

Rocket

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Polar Flow

Subscriptions1
  • Polar Fitness Program1 Month trial$8.991 Month
2 purchases

Rocket

Subscriptions2
  • Rocket Monthly$29.991 Month
  • Rocket Annual$169.991 Year

Questions

Is Polar Flow free?
Polar Flow is free to download, with in-app purchases available.
Is Rocket free?
Rocket is free to download, with in-app purchases available.
Which has better reviews, Polar Flow or Rocket?
Polar Flow is rated higher. Polar Flow averages 4.6 out of 5 from 50K ratings, while Rocket averages 1.0 from 1 ratings.
Do Polar Flow or Rocket have ads?
Neither Polar Flow nor Rocket shows ads.
Which is updated more often, Polar Flow or Rocket?
Polar Flow ships an update monthly, and Rocket every 5 days. Most recently, Polar Flow was updated on October 28, 2026 and Rocket on October 25, 2026.

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