Comparison

Polar GoFit vs Kyna

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

Head to head
About

Polar GoFit

This app helps educators track student effort and progress in physical education classes using real-time heart rate monitoring. It provides individual guidance, motivational badges, and easy assessment tools to enhance student engagement and fitness development.

Highlights
  • Real-time effort tracking
  • Individual student guidance
  • Motivational reward badges
  • Progress monitoring and assessment
  • Offline data recording with select watches
  • Web service integration for course management
Read full description

Looking for PE classes with individual guidance, engaged students, real-time effort tracking, and easy assessment? Meet Polar GoFit, the app specifically designed to help you take your PE lessons to a whole new level. Polar’s science-based sports technology helps millions of people around the globe reach their training goals. Now you can harness the same know-how to elevate your PE classes with the help of your iPad. See how hard your students are exercising during your lesson, view and measure their performance, and evaluate them based on their individual effort. With Polar GoFit and live heart rate tracking, you can encourage every student to make progress on their own fitness level. Polar GoFit Highlights - Real-time effort tracking during class - Individual guidance for each student on their own level - Student engagement with fun and motivating reward badges - Easy progress monitoring and assessment - Offline data recording with select Polar watches – teach without range limitations The Polar GoFit app is designed to be used with the polargofit.com web service to help you manage your course and student evaluation. Plan your course on polargofit.com, then simply bring an iPad and Polar heart rate monitors to your PE class and use the GoFit app to see how each student is performing. During the class, each student wears a Polar heart rate monitor, allowing you to follow their heart rate on the go.* The GoFit app guides your students to stay within set target heart rate zones to achieve the wanted health benefits, so you can teach the whole class and at the same time guide each student personally. Based on their effort, the app rewards them with badges that increase motivation and engagement. After the class, the data from the session is uploaded and saved in the polargofit.com web service, allowing you to monitor the progress of each individual student throughout the academic year. All your students’ workout data can also be recorded and stored on select Polar watches for fast upload to the Polar GoFit service, giving you a perfect view on each student’s training profile. *Compatible devices: https://support.polar.com/en/polar-gofit-compatible-devices?product_id=38642&category=top_answers Features: • Before the lesson: manage your students, assign transmitters to them, and set a target zone for the lesson. • During the lesson: follow your students’ heart rates online (current heart rate, time accumulated in the target zone, badges collected). • After the lesson: analyze summary data from the whole class (average and maximum heart rate, time accumulated in the target zone, time spent in each heart rate zone, badges collected). • Select Polar watches continue recording data offline when your students go outside the range of your iPad! This new feature gives you the freedom to teach your class without worrying about students moving too far from the iPad running Polar GoFit. This way, you capture every moment of every PE class without limitations. Discover more about Polar physical education products at http://www.polar.com/en/b2b_products/physical_education

About

Kyna

Features
Read full description

Kyna turns barbell movement into meaningful performance data. Using a dedicated barbell clip, Kyna measures acceleration during your lifts and gives immediate, objective feedback on how the bar moves. See acceleration over time, force output, and performance trends across sessions without guesswork or lab equipment. Review every lift in a clean, searchable history, compare performance across weights and exercises, and track progress over time. Built for athletes and coaches who care about intent, consistency, and measurable improvement.

Screenshots

Kyna4 screens

Verdict

The call

The clearest difference is update cadence: Kyna at every 3 weeks against Polar GoFit's every 6 months. Kyna also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Polar GoFit ships an update every 6 months, Kyna every 3 weeks. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
Polar GoFit versus Kyna: the parameters behind the verdict, then further details
ParameterPolar GoFitKyna
PriceFreeFree
Rating2.2 (5 ratings) — better—
Positive reviews7.7% of reviews—
Number of ratings5 — better—
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS14 — better15.1
Further details — not scored
Size111 MB41 MB
Age rating4+4+
DeveloperPolar ElectroKeanu Calo

In-app purchases

None

Polar GoFit

No in-app purchases

None

Kyna

No in-app purchases

Questions

Is Polar GoFit free?
Polar GoFit is free to download, with no in-app purchases.
Is Kyna free?
Kyna is free to download, with no in-app purchases.
Do Polar GoFit or Kyna have ads?
Neither Polar GoFit nor Kyna shows ads.
Which is updated more often, Polar GoFit or Kyna?
Polar GoFit ships an update every 6 months, and Kyna every 3 weeks. Most recently, Polar GoFit was updated on October 12, 2026 and Kyna on October 28, 2026.

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