Comparison

Polar Flow vs Zepp

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 your daily activity, analyze workouts with detailed data, and gain insights into your sleep and recovery. It integrates with Polar devices and other fitness services to provide personalized guidance for your health and fitness journey.

Highlights
  • Activity Tracking (steps, calories, distance)
  • Detailed Training Analysis (heart rate, pace, power)
  • Advanced Sleep Insights
  • Training Load & Recovery Recommendations
  • Device and Sports Profile Management
  • Wireless Syncing with Polar Devices
  • Integration with Strava, TrainingPeaks, and more
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

Zepp

Track your training, nutrition, and vital health metrics with this comprehensive health and fitness platform. It offers AI-powered coaching, detailed sleep analysis, and heart health monitoring. Customize your wearable device with updates and new watch faces.

Highlights
  • Nutrition tracking with photo analysis
  • Detailed health metrics (heart rate, sleep, stress)
  • Advanced training data and recovery insights
  • Sleep monitoring with recovery analysis
  • Heart health data aggregation
  • Wearable device customization and updates
Features
Read full description

The official app for Amazfit, the Zepp app is free to use and trusted by top athletes such as running back Derrick Henry and sprinter Gabby Thomas. Built for sports and performance, it’s where you’ll track your training, health and recovery data, log your nutrition, and get easy-to-understand scores with AI-powered coaching and guidance — all protected with the highest level of data security. TRACK MACROS: Snap a photo of your meal and instantly get calories, weight, and macronutrients. No watch required, just the Zepp App. Perfect for athletes balancing training with strict diets. Log as many meals as you want with no limits, or enter them manually if that’s easier. HEALTH & FITNESS DATA: Vital health metrics like heart rate, sleep, stress, and blood oxygen, the Zepp App tracks your fitness progress in detail. It captures daily activity such as steps and calories burned, and advanced training data like pace, distance, speed, strength logs, and recovery insights. SLEEP MONITORING: The Zepp App monitors sleep with precision sensors and syncs the data to the Zepp App for full recovery analysis. You'll find detailed metrics on stages, duration, breathing, and recovery quality so you know if your body is ready to train hard or needs more rest to perform at its best. HEART HEALTH: See all your essential heart health data in one place. Track heart rate, HRV, and resting heart rate (RHR), and manually add blood pressure and blood glucose from external devices for a complete view of the most important muscle in your body. CUSTOMIZE YOUR WATCH: The Zepp App is where you’ll find software updates for your Amazfit smartwatch, band, or ring. It also gives you access to the Zepp Store, with hundreds of downloadable mini apps and watch faces to choose from. DATA SECURITY: The Zepp App delivers the highest level of data security, keeping your information safe and private. Safeguarded by Amazon Web Services (AWS), all data is regionally stored, encrypted, fully GDPR compliant, and never sold. FREE TO USE: The core experience of the Zepp App is free. You won't need to pay to view data tracked by your Amazfit device, upgrade software, or import maps. You'll also get free access to a core version of Zepp Aura, your very own wellness coach. For personalized wellness advice powered by AI, Zepp Aura Premium Subscription is available for a monthly or yearly fee, but there's no obligation to sign up. ZEPP AURA PREMIUM: Unlocking unlimited access to Zepp Aura will provide in-depth health assessments, a personal wellness assistant, sleep music and more (region specific). - Available in: Most countries and regions - Subscription Plans: Monthly or yearly options - Subscriptions are confirmed via your Google account and renew automatically unless canceled at least 24 hours in advance. Any unused portion of a free trial is forfeited once a purchase is made. - Details: https://upload-cdn.zepp.com/tposts/5845154 PERMISSIONS: The following optional permissions can enhance your experience but are not required: - Location Access: Used for automatically tracking running or cycling routes, and to show local weather - Storage: Used to import or export workout data, as well as save workout photos - Phone, Contacts, SMS, Call Logs: Used to display calls/notifications/texts on your watch and enable call reminders - Physical Activity: Used to synchronize step counts and workout information - Camera: Used for taking pictures and scanning QR codes to pair your devices - Calendar: Sync and manage schedules - Nearby Devices: Used to discover and connect to smart devices through bluetooth DISCLAIMER: Zepp is not a medical device and is intended for general fitness and health management purposes only

Screenshots

Polar Flow4 screens
Zepp4 screens

Verdict

The call

The clearest difference is update cadence: Zepp at weekly against Polar Flow's monthly. Zepp also leads on iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume 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 Zepp sells 9 in-app purchases, starting at $3.99 per month. 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 — 4.6 for Polar Flow against 4.6 for Zepp. Both are backed by a comparable volume of ratings — 50K and 83K respectively. Written reviews are what separate them: 50% of Polar Flow's written reviews are positive against 47% of Zepp's.

UpkeepUpdate frequency

Polar Flow ships an update monthly, Zepp weekly. Both last shipped on November 11, 2026.

Scorecard2 real differences · 8 level
Polar Flow versus Zepp: the parameters behind the verdict, then further details
ParameterPolar FlowZepp
PriceFreeFree
Rating4.6 (50K ratings) — better4.6 (83K ratings)
Positive reviews49.6% of reviews — better46.6% of reviews
Number of ratings50K83K — better
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size191 MB492 MB
Age rating4+4+
DeveloperPolar ElectroZepp Inc.

Customer experience

Polar Flow

All ratings50,319 ratings
Positive91.2%
Neutral4.5%
Negative4.3%
Written reviews2,220 reviews
Positive49.6%
Neutral11.2%
Negative39.2%

Zepp

All ratings82,986 ratings
Positive90.4%
Neutral4.5%
Negative5.1%
Written reviews2,884 reviews
Positive46.6%
Neutral15.7%
Negative37.7%

User reviews

Polar Flow

From 50K App Store ratings

What we love

  • 🚀 Accurate heart rate monitoring
  • 🔋 Good battery life
  • 👍 Detailed workout data and analysis
  • 👍 Intuitive and user-friendly app
  • 👍 Seamless syncing with Polar devices

Room to improve

  • 🐛 Connectivity and syncing issues
  • 🐛 Unreliable sleep tracking
  • 🐛 Slow GPS initialization
  • 👎 Cluttered and confusing app interface
  • 👎 Limited customization options

Zepp

From 83K App Store ratings

What we love

  • 🚀 Detailed sleep analysis
  • 🚀 Comprehensive fitness tracking
  • 🚀 Great battery life
  • 👍 Comfortable and durable watch design

Room to improve

  • 🐛 Inconsistent sleep tracking
  • 🐛 GPS issues during workouts
  • 🐛 Sync and connectivity problems
  • 🔋 Drains battery quickly with certain features
  • 👎 Confusing and cluttered app interface

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

Zepp

Reported bugs

3 issues
  • App crashes after recent updates
  • Inaccurate heart rate and activity tracking
  • Syncing issues leading to data loss

Requested features

4 requests
  • Add more watch face customization options
  • Integrate with more third-party apps (e.g. Strava, Apple Health)
  • Improve notification handling and customization
  • Add water sports tracking mode

In-app purchases

1 purchases

Polar Flow

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

Zepp

Subscriptions6
  • Zepp Fitness - monthly7 Days trial$3.991 Month
  • Monthly, 7-Day Free Trial7 Days trial$9.991 Month
  • Yearly, 14 Day Free Trial14 Days trial$29.991 Year
Show 3 more
  • Yearly Plan, 14-Day Free Trial14 Days trial$34.991 Year
  • Yearly Plan, 14-Day Free Trial14 Days trial2 variants$39.991 Year
  • Yearly Plan, 14-Day Free Trial14 Days trial$49.991 Year
One-time3
  • watchface$0.99
  • watchface$1.99
  • watchface$2.99

Questions

Is Polar Flow free?
Polar Flow is free to download, with in-app purchases available.
Is Zepp free?
Zepp is free to download, with in-app purchases available.
Which has better reviews, Polar Flow or Zepp?
Polar Flow is rated higher. Polar Flow averages 4.6 out of 5 from 50K ratings, while Zepp averages 4.6 from 83K ratings.
Do Polar Flow or Zepp have ads?
Neither Polar Flow nor Zepp shows ads.
Which is updated more often, Polar Flow or Zepp?
Polar Flow ships an update monthly, and Zepp weekly. Most recently, Polar Flow was updated on November 11, 2026 and Zepp on November 11, 2026.

Other comparisons