Comparison

Polar Flow vs E

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

E

This app offers comprehensive support for your fitness journey. Track your training calendar, book sessions, and communicate with your personal trainer. Monitor your progress with daily, weekly, and monthly statistics, and share your achievements on social media.

Highlights
  • Training calendar access
  • Book E-Fit training sessions
  • Direct chat with personal trainer
  • Daily, weekly, monthly statistics
  • Social media sharing
Features
Read full description

The E-Fit app is designed to provide 360 degree support to the guest. -Check the training calendar. -Book your E-Fit training right away from your mobile device. -Send your questions straight to your E-Fit personal trainer (chat function only for members). -Check daily, weekly and monthly statistics of your E-Fit training and development. -Share your activities on social sites (Facebook, Twitter)

Screenshots

Polar Flow4 screens
E3 screens

Verdict

The call

The clearest difference is review sentiment: E at 100% against Polar Flow's 50%. E also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.6). Polar Flow's advantage is ratings volume (50K vs 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. E asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

E holds the better App Store score, 5.0 against 4.6. 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 point the same way: 50% of Polar Flow's written reviews are positive against 100% of E's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
Polar Flow versus E: the parameters behind the verdict, then further details
ParameterPolar FlowE
PriceFreeFree
Rating4.6 (50K ratings)5.0 (1 ratings) — better
Positive reviews49.6% of reviews100.0% of reviews — better
Number of ratings50K — better1
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.07.0 — better
Further details — not scored
Size189 MB6 MB
Age rating4+4+
DeveloperPolar ElectroFit-Pro Kereskedelmi es Szolgaltato Kft.

Customer experience

Polar Flow

All ratings50,010 ratings
Positive91.3%
Neutral4.5%
Negative4.2%
Written reviews2,214 reviews
Positive49.6%
Neutral11.2%
Negative39.2%

E

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

E

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

E

No in-app purchases

Questions

Is Polar Flow free?
Polar Flow is free to download, with in-app purchases available.
Is E free?
E is free to download, with no in-app purchases.
Which has better reviews, Polar Flow or E?
E is rated higher. Polar Flow averages 4.6 out of 5 from 50K ratings, while E averages 5.0 from 1 ratings.
Do Polar Flow or E have ads?
Neither Polar Flow nor E shows ads.
Which is updated more often, Polar Flow or E?
Polar Flow ships an update monthly, and E monthly. Most recently, Polar Flow was updated on October 23, 2026 and E on October 15, 2026.

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