Comparison

Polar Flow vs O₂Max

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

O₂Max

Features
Read full description

O2Max is your longevity-focused coaching app designed to improve VO2 max, optimize HRV, and build sustainable health for life. Train with purpose using personalized plans that combine aerobic conditioning, intervals, recovery sessions, and daily habits. O2Max helps you improve cardiovascular fitness while protecting recovery, so you can perform better today and stay healthier long term. What you can do with O2Max - Follow personalized training built to raise VO2 max - Track HRV and recovery trends to guide daily intensity - Complete breathwork and recovery protocols for nervous system balance - Build consistent longevity habits around sleep, stress, and movement - Log sessions, monitor progress, and stay accountable with coach support Why O2Max is different O2Max connects performance and longevity in one system. Instead of pushing hard every day, the app uses your readiness and recovery data to help you train smarter, adapt better, and avoid burnout. Built for long-term results Whether you want to improve endurance, boost resilience, or age with strength and energy, O2Max gives you a clear, coach-guided path powered by VO2 max and HRV insights.

Screenshots

Polar Flow4 screens
O₂Max4 screens

Verdict

The call

The clearest difference is in-app purchases: O₂Max at none against Polar Flow's 1. On price, update cadence, ads and device support 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. O₂Max asks for nothing beyond the download.

UpkeepUpdate frequency

Polar Flow ships an update monthly, O₂Max every 3 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 9 level
Polar Flow versus O₂Max: the parameters behind the verdict, then further details
ParameterPolar FlowO₂Max
PriceFreeFree
Rating4.6 (50K ratings) — better—
Positive reviews49.6% of reviews—
Number of ratings50K — better—
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size189 MB105 MB
Age rating4+4+
DeveloperPolar ElectroTrinity Strength LLC

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

O₂Max

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
None

O₂Max

No in-app purchases

Questions

Is Polar Flow free?
Polar Flow is free to download, with in-app purchases available.
Is O₂Max free?
O₂Max is free to download, with no in-app purchases.
Do Polar Flow or O₂Max have ads?
Neither Polar Flow nor O₂Max shows ads.
Which is updated more often, Polar Flow or O₂Max?
Polar Flow ships an update monthly, and O₂Max every 3 weeks. Most recently, Polar Flow was updated on October 30, 2026 and O₂Max on October 24, 2026.

Other comparisons